ALBERT R. MANN ■ LIBRARY New York State Colleges OF Agriculture and Home Economics Cornell University Cornell University Library SB 195.S58 1884 Silos for preserving British fodder crop 3 1924 003 417 882 The original of tliis book is in tlie Cornell University Library. There are no known copyright restrictions in the United States on the use of the text. http://www.archive.org/details/cu31924003417882 SILOS FOE PRESERVING BRITISH FODDER CROPS STOEED IIsT A GREE^ STATE. NOTES ON THE ENSILAGE OF GRASSES, CLOVERS, VETCHES, ETC. BY THE SUB-EDITOR OF "THE FIELD." Second Edition. LONDON: HOEACE COX, "TIELD" OPPICE, 346, STEAND. 1884. MNDON : PRINTED BY HOEAOE OOX, 346, STEASD. W.O. PREFACE. The second edition of this book was intended to be issued early in tbe Spring; and the compiler would gladly have carried this intention into effect. Unfortunatelyj however, he was prevented by illness from making progress with the work, and its publication has in consequence been con- siderably delayed; but the delay has not proved an unmiti- gated evilj as it has enabled information to be added on several points which otherwise could not have been included. Mr. Jenkins's excellent report in the "Journal of the Royal Agricultural Society," and the chemical analyses contained in the same volume, although not quoted at any length, have afforded facts which called for comment, and which could ill be spared from the chapter on the feeding value of silage. The same may be said of the South Kensington lecture of Mr. Woods, the tables of feeding experiments at St. Albans by Sir John Lawes, and various other matters. An endeavour has been made in the present edition to improve upon its predecessor, and to render the book of greater interest and utility, by illustrating the various points of ensilage practice by results obtained in recent experiments. Especially has it been thought desirable, in Chapters IX. and X., to impress upon beginners the lessons to be learned from scientific investigators, by showing the nature of losses which may ensue from slovenly modes of operation, although the provender remaining may itself be good ; also the wide difference in value of samples of silage made from different IPreface. crops, or from similar crops under varying conditions of moisture, &c. ; and likewise to trace the cause of the con- flicting results reported as to the effect of silage on dairy produce and on the condition of the animals fed upon it. The consequence has been that the volume has been much expanded, and a number of supplementary pages have had to be interpolated (pp. ] 60a to 160p) because, the last half of the book having been printed first, in order to afford an opportunity for direct reference to the numerous experiments commented on, the allotted space was considerably overrun by the after- growth of material, notwithstanding the omission of the greater portion of the contents of the previous edition, so far as they related to experiences abroad. Altogether the volume has become nearly twice the thickness of that of last year, despite the great amount of condensation the reports of experiments have undergone; nearly three-fourths of the matter in the present issue was not included in the first edition ; and the amount of correspondence and extracts which have perforce been laid aside, would have sufficed to make a second volume of equal bulk. One result of this expansion has been to make it obvious that this book is much too voluminous to meet the require- ments of persons who wish to gain a general knowledge of the process without going deeply into details ; and, as some landed proprietors have expressed a wish to distribute among their tenantry a small publication affording such particulars, a selection has been made from the pages of this work and issued as a cheap pamphlet under the title of " Short Notes on Silo Experiments and Practice." MpU Office, June, 1884. CONTENTS. •CHAP. PAGE. Inteoduotort. — Cattle-feeding v. Corn-growing ; previous information on tlie storage of green fodder in pits ; silos in ancient and modem times 1 I. Summary op Practice 13 II. Crops por the Silo. — Grasses, clovers, lucerne, vetches, maize, green rye and oats, spurrey, buckwheat, comfrey, roots and miscellaneous crops 17 III. The Variotts Kinds op Silos. — Earthen pits a.nd other simple forms of silo ; barn and other converted silos; specially constructed silos of stone, brick, concrete, wood, &c. ; ensilage stacks and barrels 37 IV. Cost op Silos. — Estimation of capacity ; cost of British silos, specially constructed ; converted buildings ; patent silos of concrete slabs, slate, and wood ; French silos ; relative capacity and cost of silos and hay-barns ; roofs 89 v. Filling the Silo. — Mixture of dry material with green fodder ; influence of wet weather ; chopping up the fodder ; slow v. quick filling ; curbs or super-silos; the use of salt; trampling down the fodder 110 VI. Covering and Closing the Silo. — Straw and other materials; the covering boards; closing the doorway 125 vi Contents. VII. Weighting the Silo. — Amount of weight to put on ; consequences of insufficient pressure ; expression of juice from tlie fodder ; mechanical arrangements for pressure J cost of apparatus... 129 VIII. Opening the Silo. — Precautions to be taken in uncovering the silage, and removing the weights 139 IX. Effect of Ensilage on Foddees. — Fermentation in the pit ; advantages and losses produced by- fermentation ; reduction in weight and altered proportion of constituents of silage resulting from excessive fermentation 141 X. Feeding Qualities of Silage. — Effect of amount of moisture in diluting the nutrient matters ; comparative money value of green fodders and silage ; results of feeding experiments on the condition of the animals and the production of milk and cream; silage for horses, sheep, &c 151 XI. Effect of Silage on Dairy Peoduce. — Complaints of bad flavour in milk and butter ; causes of conflicting reports 160 n XII. Cost of Haymaking v. Ensilage. — Differences of cost of the process under various conditions ... 160 p ILLUSTEATIOl^rS. PAGE. Bam-Silo belonging to M. Lecouteux, at Cer9ay 43 Mr. Stobart's Silo at Pepper Ardeu, Yorkshire 45 Lord ToUemaohe's Silos at Peokf orton, Cheshire 47 American "Wooden Ice-house or Silo 49 Ground Plan of M. Goffart's Triple Silo 51 M. Goflart's Silos and Cattle Sheds at Bnrtin 52 Vertical Section of M. GofEart's Triple Silo 53 Lord Ashburton's Concrete Silos at Alresf ord, Hants 57 Vertical Section of Lord Ashburton's Silos 58 Mr. Bailey's Plan for Building Concrete SUos 59 Plan for Small Silos 60 Mr. Copley's Improved Silo at East Cowton, Yorkshire 63 The Kentish Silo, Mr. Kains- Jackson's Plan 65 Side View of the Vicomte de ChezeUes' Silo 66 Mr. Johnson's Lever-pressure Silo, Croft, Darlington 69 Messrs. BentaU's Concrete Silo and Section 71 Messrs. Pearson's Silo, with Weighting Apparatus 73 Mr. LasceUes' Silo of Portable Concrete Slabs 74 Messrs. Brindley and Co.'s Slate Silo 76 Mr. Stocks' Patent Wooden Silo and Press 77 Messrs. Churchton's Patent Wooden Silo 80 Messrs. Reynolds's Patent Wooden Circular Silo 81 An Australian SUo — Mr. Lamb's, Rooty Hill, New South Wales 83 Messrs. Pearson's Ensilage Stack and Pressing Apparatus 85 M. Houette's Method of Partially Pilling Long Silos 118 Mr. Potter's Pressing Apparatus with Hydraulic Jack 135 Messrs. Reynolds's Pressing Apparatus, with Chains and Screw 137 The Vicomte de ChezeUes' Silo, End View 194 The Bast Cowton SUo, as originally made 203 Mr. Johnson's Lever-pressure Silo, Details of Apparatus 213 Sections of Drainage Well in Mr. Grant's SUo 230 Mr. Mead's Silo and Screw Apparatus for Pressure 243 Lord Egerton's Silo (Converted Ice-house) 250 Mr. Edwards's Silo at St. Alban's 276 BOOKS ON EIsTSILAGE. The following is a list of books on ensilage. Those marked f we have not seen, but take the particulars from Dr. Thurber's book : " Manuel de la Culture et de I'EnsUage des Mais et autres fourrages verts." Par Auguste GofEart. 4th edition. Paris : G. Masson, 120, Boulevard Saint Germain. 1883. f M. Goffart's previous edition was translated by Mr. J. B. Brown, and published at New York in 1879. " Le Mais et les autres fourrages verts, Culture et Ensilage." Par Ed. Lecouteux. 2nd edition. Paris : Librairie Agricole, 26, Rue Jacob. 1883. " The Book of Ensilage ; or, the New Dispensation for Farmers." By- John M. Bailey. New York: Orange Judd Company, 761, Broad- way. 1881. f " Ensilage of Green Forage Crops in Silos." By H. B. Stevens, Echo Dale Farm, Dover, Massachusetts. Published by the author. " Silos and Ensilage : the Preservation of Fodder Corn and other Green Fodder Crops." By Dr. George Thurber. New York: Orange Judd l ID loose BOX£S ovEir CADTSnaa LLu._i Barn Silos. 45 In America the practice of converting barns^ and other buildings, wholly or in part, into receptacles for green forage, has been very widely adopted. Of the number of silos as yet constructed in the British islands a very large proportion have been adapted from existing buildings of some kind or other — dilapidated barns, unused icehouses, manure pits, and various other structures being made serviceable at comparatively small outlay. One of the earliest, if not the earliest, in doing so, was Mr. A. J. Scott, of Rotherfield Park, Hants, who has carried on ensilage expe- riments for the past eight seasons, and who converted two cattle-feeding pits into silos at a cost of 30s. Lord Walsingham, in 1881, constructed a small silo in a granary, and in the following year made three silos in an old clay barn, as described at page 260. On the Earl of Wharncliffe's estate in North Yorkshire several stone barns have been con- verted into silos as detailed in Mr. Broderick's letter at page 216. Mr. W. Stobart, of Pepper Arden, has had a double silo made out of a large seldom-used building in his farmyard. Mr. Easdale, the agent of the Pepper Arden Estate, has fur- nished the accompanying plan of the structure, which occupies an angle of the farmyard between the barn on one side and cart-sheds with loose boxes over them on the other side. The large pit is computed to hold between 90 and 100 tons of silage, and the smaller one upwards of 40 tons. Fig. 1 is the ground plan. Pig. 2 the cross section, and Fig. 3 the longi- tudinal section. A A , the door through which the large silo is emptied ; BB, door through which the small silo is emptied j CO, the wall, 3ft. thick, on top of which the block-iron weights rest while the pits are being filled. 4. End elevation, showing the door where the grass is thrown in. Lengthy details of the experiments are given by Mr. Easdale at p. 207, and an account of the R.A.S. inspection appears at p. 298. Sir Eichard Glyn (p. 287) utilized an old sawpit as a recep- tacle for lawn mowings and other grass. Mr. Harris's silo (p. 288) was originally a receptacle for dung, but has been «o M ■4 J- SI o ^ o I 1^ I 1 5 ft Q P O 03 Barn Silos. 47 altered for tlie present purpose at a cost of a good round sum (lOOZ.) ; and it now is a building 35ft. in lengtli, 18ft. in breadtli^ and tlie walls are 10ft. Gin. higl., with a slate roof. By far tlie largest utilizers of antique farm buildings are the Messrs. Trepplin, who put upwards of 1000 acres of grass into their silos last year. Mr. 0. Trepplin, in a letter in the Field, said : " Tou doubt the desirability of drawing off the moisture by draining from grass pitted in barns. We can speak with a certain amount of experience^ as we have made some five thousand tons of ensilage this year, and feed upwards of three hundred dairy cows, besides other stock, on it. There is no need of either cementing or draining if barns are used. All that is necessary is to have the ventilating holes, cracks, &c., filled up. By not draining, the moisture is gradually re-absorbed again, and thus none of the strength is lost. Those who make pits for ensilage, and yet have old barns and threshing floors comparatively unused, are very extravagant, for there is no need of any expense beyond a few shillings for a bricklayer's wages in stopping the holes in the walls. If only one bay of a bam is used, the open end can be fastened up with planks." Some particulars of Messrs Trepplin's silos are given at p. 267. Lord ToUemache is another converter of existing buildings into silos. Wishing to ascertain practically, on behalf of his tenants, what were the advantages of the ensilage process, he determined to adapt an open Dutch barn to the purpose, by inclosing and dividing it into four silos, as will be seen by the plan given in the opposite page. The building was a little over 50ft. long by 15ft. broad, and supported on ten pillars ; and it was converted into four silos by bricking up the spaces between the pillars. The doors (a) were used for filling to a certain extent, after which the doors were closed, and screwed to the jambs, and they were eventually bricked up on the out- side, so as to make them impervious to air. The shutters (&) — which are 8ft. above ground — were then used for continuing the filling, and those above (c) could finally be employed for entrance and egress when the silos had been filled to the 48 Silos for Fodder Crops. height required [d). It will be seen that below silo 4 there are dotted lines showing an excavation of 3ft. into the soil, which was done with a view to ascertain whether there was any difference in the quality of ensilage below ground and that above the surface, as in the other three silos. Lord Egerton had an icehouse in Tatton Park converted into a silo, as shown at page 250 j Lord Harlich also (p. 341) and several other gentlemen have converted similar buildings to a more useful purpose, by storing summer crops that are always available instead of a winter crop that is seldom produced in our climate. Among the other converted buildings may be mentioned Mr Lowe's (p. 253), Mr. Bourne's (p. 254), the Earl of Warwick's (p. 255), Lord Pitzhardinge's (p. 259), Mr. Whit- bread's (p. 280) ; Mr. Miller's (p. 293), Mr. Bckersley's (p. 294), the Marquis of Bute's (p. 324) ; a disused water tank (Mr. Melrose's, p. 322) ; a disused gas tank (Waverley, p. 325) ; an old brick-kiln (Sir D. Baird's, p. 333) ; a coach- house and stable (Mr. E. J. Smith's, p. 335); a "turnip hole" (Sir J. 0. Kennedy's, p. 337) ; a cow-house (Mr Lloyd- Vaughan's, p. 345) ; and various others. In America a number of ice-houses have been turned into silos. It must not be supposed, however, that these are necessarily pits dug in the ground, lined with masonry, and closely shut in above, as depicted at page 250, and as is the case with most of the ice-houses in this country. In the States, ice-houses are commonly built of wood, above ground, and are left open to the air between the roof and the top of the walls, so that there would be little difference in their method of storing ice and storing fodder. In these ice-houses the walls are built of double planking, much after the fashion shown in the ground-plan for building the concrete walls of Mr. Bailey's silo on p. 59. But, of course, the joists that are there represented outside the planks should be between the boards in the wooden silo, as the inside walls of the silo should be as smooth as possible ; and planed boards, placed upright, would be better than rough ones, because they would Building Wood Silos. 49 allow tlie fodder to slide down more evenly and pack better — which, is a very great advantage. We have not seen a repre- sentation of a wooden silo, but the following small figures of an American ice-house will doubtless afford a tolerable idea of some aniong those which are said to have been applied to the storage of green crops instead of the storage of ice. The window shown in the building is intended for the purpose of 5JWS« ventilation, already alluded to as common in American ice- houses ; but in a building specially erected for a silo it would be advantageous, for convenience of filling, to have the roof raised, as shown in the side view of Mr. Bailey's silo (page 59) . The following description of the mode of making the walls of a similar structure may be interesting as showing how American farmers set to work in such matters : Mark out your ground the size you require for the house ; then, com- mencing at one comer, dig a double set of holes opposite each other, 1 foot deep and 2|ft. apart, on each side of the intended building, say 3ft. equidistant, so that when the posts stand up they will present a. double row, l|ft. apart. Then set in your posts, which should be of oak, chesnut, or some lasting wood, and pack the earth firmly around them. The posts should be full 8ft. high above the ground to where the plate of the roof is attached. If the posts are sawed, they may be 4in. by 6in. in size, set edgeways towards each other. If not sawed, they may be round sticks cut from the woods, or split from the body of a tree, quartered, and lined to a surface to receive the planking. Of course, when the posts are set in the ground, they are to show a skeleton of what the building is to be when completed. When this is done, square off the top of each post to a level all round; then frame or spike on to each line of posts a plate, say 6in. wide and 4in. to 6in. deep, and stay the two plates together strongly, so as to form a double frame. Now plank or board up E 50 ^*^c>* for Fodder Crops. closely the inside of each line of posts, that the space between them shaU be a fair surface. Cut out, or leave out, a space for a door in the centre of the side where you want it, and board up the inner partition sides of his opening, so as to form a door-case on each side, that the space between the two lines of posts may be a continuous box all round. Then fill up this space between the posts with sawdust, well packed from the ground up to the plates. For the roof, take common Sin. by 4in. joists for rafters ; or, in place of them, poles from the woods, long enough, in a pitch of full 36° from a horizontal line, to carry the roof over the outside of the plates. Secure the rafters well to the plates by pins or spikes, and then board over. This method of making walls is very well suited for par- titions in barns^ &c., when a portion is required to be divided off for use as a silo. A wooden silo, built in England, some- what after the above fashion, but with clay filled in between the boards, will be found described at page 281. Specially Consteucted Silos. With respect to the question, "■ What kind of silo is preferable?" M. Goffart said, at the Conference at Blois before mentioned : A silo on the ground level — a kind of room or chamber — is that which gives the best results during cold weather (from December to March inclusive) ; but as soon as the temperature rises, fermentation sets in with great energy, and in 1874 and 1875, from the month of March, a considerable settlement was seen to go on in such silos, owing to the slow combustion which took place in the mass. The underground silo, with waUs of masonry, does not sufEer from this inconvenience. The temperature does not rise in them in March, nor even in April. And at Burtin the ensilage which is being taken from the silo at this time (May 8, 1876) has undergone only a slight fermentation; it is nearly in the same condition as when put into the silo seven mouths ago. If I were about to commence the construction of silos, I would choose a rather elevated spot, where the ground could be dug into to the depth of six or seven feet without fear of an influx of water. I would make the silo of masonry, and carry up the walls a similar distance above ground, and thus I should have a mixed silo twelve or thirteen feet high, and seven to ten feet wide, half under and half above ground. During the winter the part of the ensilage above the ground level would be consumed, and the lower portion be reserved for the hot months, when the part farthest from the entrance would be first attacked, and the cutting Goffart's Triple Silo. 51 carried back towards the door. In this way, I think, excellent conditions would be obtained, suited to the exigencies of the different temperatures. Since the time of that Congress, M. Goffart has built several new silos, together with extensive cattle-sheds immediately facing the silos, as shown in the engraving on the next page ; and he has considerably enlarged his ideas with respect to the dimensions of his silos, in like manner as he has greatly increased the number of cattle which he feeds upon silage. With regard to the shape, also, he has made some modifica- tions, and now prefers the sHos to be " elliptical," as he c^Us Gbotjnd Plan 01- M. Gop^abt's Teiple Silo. them — though they are not strictly elliptical, the sides and "walls being straight and the ends semicircular. We give a plan of his latest construction, three silos combined together, each being 5 metres (about 16^ feet) in width, the same in height (half being below and half above ground) and 12 metres (about 40 feet) in length ; about 24ft. of the walls being straight, with a semicircle at each end. With regard to this modification in form M. Goffart says : If I have greatly modified my process of ensilage, the modifications have related principally to the form, the dimensions, and above all the covering up of my silos. GoffarVs Triple Silo. 53 The form has particularly occupied my attention ; it exercises a very great influence on the results to be obtained. The form ought to be that which aToids every kind of angle and offers the least obstruction to the settlement of the materials in the silo. The elliptical silo represented in the plan fulfils these conditions. All angles are done away with, and the walls being vertical (not sloping as some persons make them) offer the least possible resistance to settlement — ^but more than is desirable never- theless. The elliptical form also presents another advantage, which is very valuable as regards the strength of the silos. The underground walls thoroughly withstand the thrust of the earth, which forced in the walls of my first structures, and sometimes rendered them unserviceable. "With respect to the dimensions of my silos (length, width, and height), those who have followed my doings can answer for my constant tendency to increase them, in order to obtain the greatest capacity. When you VBBTicAii Section of M. GorrAET's Triple Silo. must operate upon considerable quantities of fodder, and have in your cattle-sheds a large number of beasts to feed every day, you must not hesitate to give to your silos the greatest dimensions compatible with the other conditions of an easy and economical service. Great masses keep much better than those which are small, or in other words, the preservation in small silos is always less perfect than it is in great ones, for these reasons : — However smooth the walls may be made by plastering, the fodder always lodges against them; and whatever precaution may be taken, the settlement close to the walls is sure to be more or less obstructed, and this is detrimental to good preservation. The trampling down alongside the walls may have been very carefully done at the time of filling the silo, you may have heaped on the top of the mass, alongside the walls, a very considerable quantity of heavy 54 Silos for Fodder Crops. ■weights (wHch is a practice that I cannot too highly commend), but the best preserved materials will nevertheless be those farthest away from the sides. Near the walls there is usually some amount of damage, and although it may not be important it is nevertheless desirable to restrict it as much as possible. This particular damage is increased or diminished according as the walls present a greater or less amount of surface in contact with the fodder as compared with the whole mass. Hence there is considerable advantage in giving silos the greatest capacity possible, as those which hold but a small quantity have proportionately a much larger surface of contact. Suppose, for example, a sUo one yard square and one yard deep ; for this cubic yard of capacity would be five square yards of surface. If you multiply these dimensions by ten, and make your sUo ten yards every way, you will then have a receptable of 1000 cubic yards capacity, with a surface of contact of only 500 square yards ; that is to say, there would be, for every cubic yard of capacity, only half a square yard of surface, instead of five square yards as in the small silo ; and you thus wiU have diminished by niue-tenths the evil pointed out. I need scarcely say, however, that I do not recommend silos of such proportions as these. I merely give an extreme illustration in order to render my meaning the more clear. Fact answers but too well to the theory here set forth. I have continually found the fodder not so well preserved in small silos as in large ones. Whether the sUo was great or small, I always used to find that, where the fodder came into contact with the walls, there was a layer from half an inch to an inch in thickness which had not kept well. In large sUos this forms but an insignificant part of the mass, and cannot produce any evil effect ; but it is otherwise in small silos, where the damage may afEect 15 or 18 per cent, of the mass. Nowadays, thanks to the care which I take to put extra heavy weights on the mass close by the walls, the fodder is as well preserved there as elsewhere. Formerly I recommended silos of small dimensions; but that was because I had not then discovered the marvellous results which may be obtained by the employment of heavy weights in establishing and maintaining density in the silos. "When ensilage was taken out, the air quickly penetrated into the mass in the silo (where a want of sufficient density gave it free passage), and rapid deterioration was the result. It was natural, therefore, to endeavour to check this as much as possible ; for the first effect of the penetration of air was to raise the temperature of the mass to a very high degree by continuoite fermentations (first alcoholic, then acetic, then putrid) which rapidly succeed one another; and the mass being thus a prey to a kind of slow combustion, went on continually deteriorating as long as the ensilage remained in the sUo. Under such circumstances it was necessary to make the sUos small, and to get the contents eaten as quickly as possible. But when at last I discovered that, by maintaining a constant density in the mass, the Construction of Silos. 55 penetration of air was was rendered impossible, I then could abandon tbe small sUos for others on a more important scale. In consequence of the greater diflSculty and cost of roofing satisfactorily tlie triple siloj M. Groffart afterwards said lie should be inclined^ in any future structurej to make it with two instead of three divisions, and obtain the same capacity by an increase of length. He had previously made both double and single silos with the rounded ends, so had had practical experience of their respective advantages. In America, some writers on this subject have recommended that the silos be made rectangular^ but that the corners be cut off, as shown in the illustration on page 59. This, however, is only reverting to a former practice of M. Goffart, who said in his communication to the Farmers' Dinner of January, 1876 : Having observed that the angles of my old silos constituted weak points, where the fodder did not settle evenly, and where its preservation was not so good, I replaced the right angles by obtuse angles. The inconvenience disappeared ; thanks to this simple modification the angles no longer present the exceptional damage, which goes on increasing with time. But, although he found an improvement from the corners being cut off, he found still further improvement from the ends being rounded, and hence his subsequent recommendation of " elliptical " silos. As to precautions to be taken in the construction of silos, M. Goffart says : Too much care cannot be taken in the construction of silos. The underground part especially ought to be the object of particular pre- cautions. The fact should never be lost sight of that the walls have to resist two kinds of thrust, in opposite directions. When the silo is empty the masonry has to undergo pressure from the ground without ; and this is especially dangerous to new waUs. When the silo is fuU, the masonry, more particularly that which is above ground, has to withstand the pres- sure exercised by the ensibge, increased as it is by the weights put thereon in order to secure preservation. Any undue economy in these constructions may have to be paid for very dearly. Nevertheless it is not necessary to slavishly foUow the method which I have adopted. Instead of making all my walls of brick- work, I might, so far as regards the underground portion, have made use 56 Silos for Fodder Crops. of hydraulic concrete, which costs one-half less than the former ; but in such case you should be Tery sure of your materials and workmen, which can seldom be relied on in country places. It would be an advantage for those who have a hill at hand to utilise it, so that one side of the silo should be entirely underground and the upper part of the wall be on a level vrith the ground by which the waggons containing the fodder could be brought up, and upon which the chaff- cutting machine could be placed, if used, so that the chopped fodder would fall from the machine into the silo. It is impossible, however, to lay down a general plan suited to all situations ; the arrangements will depend upon the surface of the ground, the existing buildings which are to be utilised, the nature of the soil, and so forth. In choosing a site for the construction of silos, it is desirable not to lose sight of the fact that their distance from the feeding sheds may have a considerable influence on the economy of labour. They should be as close at hand as possible, in order to diminish carriage ; but sometimes there is an advantage in placing sUos farther away, in order to avail oneself of more suitable ground. The door of the silo ought to be at the end ; because, if opened in the middle of the long wall, two surfaces would be exposed to the action of the atmosphere. The door should be closed before putting in the fodder, and this may be done by means of boards fitting into grooves in the walls. Such was the method that I first adopted ; but now I close the entrance of my silos by means of temporary brickwork plastered inside with hydraulic mortar, and this wall is pulled down again at the time of opening the silo. This brickwork closes the opening much more effectually than the boards, whatever care may be taken to adjust them one upon another. Each of these openings may be closed up by a brick- layer in the course of an hour or so. Many persons in this country and in America have availed themselves of the opportunity of utilizing the side of a hill, as well for the sake of avoiding excavation when constructing the silo, as for saving labour in filUng and emptying it. Where the slope is gradual, the building is usually built with its length extending down hill ; but where there is a very sharp incline, it may be convenient to build broadside on the hill, as in the case of Lord Ashburton's silos at Alresford, Hants. For particulars and woodcuts of these we are indebted to the "Bath and West of England Society's Journal" for 1883-4, in which there is an article on the subject by Mr. J. B. KnoUys, including a description of the building, by Mr. T. Potter, Lord Ashburton's clerk of works. Of this we give an abstract. Concrete Silos. 57 Lord Ashburton has built three silos at the home farm ; or perhaps it would be more correct to say one silo divided into three compartments, each lift, square by 12ft. in depth, the total capacity being 4350 cubic feet. The site chosen for the silo is separated from the farm buildings only by the farm road. This road is on level ground, but nearly parallel with another road on a slope leading to a rickyard on higher ground. At one point, where there is about 13ft. space between them, the upper road is 12ft. above the lower road, and between the two is a sloping bank at an angle of nearly 45°. In this space the sUo is built, the top of the walls LoBD Ashbueton's Silos. being level with the higher road, and the floor nearly level with the road below. The walls are made of concrete 12in. thick, except those portions which "back" against the natural ground, and there they are only 9in. thick. The roof is of galvanized corrugated iron, resting upon wall plates front and ba*k^ and an. intermediate purlin or plate, all extending the full length of the buHding. The intermediate purliu or plate is carried by four rafters, placed respectively over the two ends and two division walls «f the silo, A very substantial roof is thus provided with a small amount 58 Silos for Fodder Crops. of timber, as the area is 481 superficial feet, and the quantity of timber used 18 cubic feet only. A special mode of compression^ by m^eana of a hydraulic jack, has been applied to these silos by Mr. Potter, who has patented the invention. Particulars of the mode of applica- tion are given subsequently in the chapter on weighting. Mr. Potter is also an authority on concrete building ; and persons who wish for information on this subject can scarcely do better than obtain his book on the subject, " Concrete, its Use in Building, and the Construction of Walls, Floors, &c." published by Messrs. Spon, of Charing Cross, London. Veetical Section of Lord Ashbitrton's Silos. In the United States concrete is a favourite material for the construction of silos, as American farmers are very handy men, and do much of their own building work. In his " Book of Ensilage," Mr. John M. Bailey gives a plan which has some resemblance to a double silo of M. GofEart's, except that the ends are not rounded off, but have the inner angles removed as alluded to on page 55. Mr. Bailey thus describes his mode of proceeding : Having resolved to try the experiment thoroughly, I selected a side hill, excavated on the west side and south end 7ft. deep, and put in on the west side a solid stone wall 44ft. long and 12ft. high, built of very heavy stone and in a most substantial maimer. I afterwards banked up on this side to the top of the wall, making a level spot upon which to set an engine and ensilage cutter ; also to drive carts upon, to deposit the fodder as it came from the fields. Concrete Silos. 69 I then commenced building the silo walls. These are 15in. thick, built in the following manner : First, Sin. X 4iii. scantling (a) are set up at each of the angles and at intervals of about 8ft. on each side of the waUs. These scantlings beiug placed 18in. apart, planks 12in. wide and IJin. thick are set up inside the scantling, leaving 15in. between the planks as the thickness of the walls. M. Goffart recommends that the comers be rounded. I thought that cutting them ofE, as shown in the diagram, would answer as weU and be much less expensive. 1. Ensilage. 4. Stone weights. 6. Doors. 2. Straw uncut. 5. Vertical slice to be taken out T. Cement floor. 3. Plank covering. daily. 8. Drainage. The concrete is made by mixing one bushel of cement with three of plastering sand and four of clean gravel. This is thoroughly^ mixed together when dry ; it is then wetted and thoroughly mixed again, making a very thin mortar. 1 2 60 Silos for Fodder Crops. About Sin. in depth of this mixtuie is put in between the planks ; then stones of all sizes and shapes are packed and bedded ia this layer of con- crete, after which another layer of concrete is poured in on top of this layer of stones, and the operation is repeated until the space between the planks all round each sUo is filled; then the planks are raised about lOin., and the space filled with concrete and stones as before, until the walls are at the desired height. The best way is to have a suificient number of hands to just raise the wall the width of the plank each day. A 4in. X 12in. siQ was bedded on the wall in the last layer of concrete. Upon the siU a wooden building was placed, with posts 5ft. high, the beams on the top of these posts being thoroughly braced to the posts, thus firmly tying the whole structure together. The cost of the structure will, of course, vary in different localities, as the cost of labour and materials varies. My silos (capacity about 400 tons) cost me about 1001., or about 5s. for each ton capacity. Large ones will cost less, small ones more. Silos may be built of stone, pointed with cement mortar, and plastered on the inside ; or of brick, or of concrete, as miue are. Whichever material is the cheapest and most convenient in any locality is the best to use. Brick will cost more than the concrete. Concrete wall costs here about 5d. per cubic foot. Large silos 40ft. to 50ft. long, 15ft. to 18ft. wide, and 16ft to 24ft. deep, are the cheapest : they will not cost more than 4s. or 5s. for each ton capacity. They require no repairs, and, if properly built, will last for ages. The cost therefore, of storage-room for ensilage is about 3d. per ton yearly. My plans of building silos are cheaper than to dig pits in the ground. Small silos, capable of holding enough ensilage for ten to twenty cows oaji be constructed by digging and walling up, as for a cellar, when stoae Construction of Silos. 61 is plentiful. Mix one part cement with two parts sand, and make a con- crete floor about lin. tHct. Put a cheap battened roof over it to keep the rain and snow out, and you have just as good a silo as any. One 12ft. wide, 30ft. long, and 12ft. deep would not cost, besides the labour, over lOL where stone is plentiful, and it would hold enough ensilage to winter twelve to fifteeen cows. The figure on the opposite page gives a sectional view of a small silo of this kind, I being 3 X 4in. scantling ; II, Ij X 12in. plank, between which and the rough wall a concrete or grout is poured ; and III, a dotted line showing the face of the concrete pointing and plastering. A door 4ft. X 8ft. is in the centre. Among tlie more noticeable of tlie specially-built silos in this kingdom is that of Lord Blantyre, at Freelands BrskinOj near Glasgov?. It is said to be like an ordinary house in appearance, being built of red brick, pointed, with a good substantial roof of slate, and, as one correspondent said, ''furnished almost like a dwelling-house," with doors and fittings of pitch pine. Of course, such a building would be rather expensive, and the cost, as will be seen by the ■description at page 326, was more than 270L The diagrams given on the ensuing page represent Mr. Copley's improved silo at Bast Cowton, Yorkshire. At page 203 will be seen a description of the East Cowton silo as it existed when the first edition of this book was printed. Now its dimensions are more than doubled, by the addition of a second and larger pit ; and a new roof has been erected, which extends 3ft. beyond the edge of the pit on either side, as will be seen by the ground plan on the next page. A kind of bench or platform is thus formed on both sides, which is very convenient for laying the weights on when they are lifted off the ensilage ; and at other times the covered space makes an excellent shed. The building is enclosed at the back and two ends by feather-edged boards, while the front has double doors made of the same material. One of the pits is 15ft. long, and the other (the old one) 12ft. in length; they are both 7ft. in width and 10ft. deep, 8ft. being below ground and 2ft. above the surface. Mr. Bateman (page 274) has built in Essex a concrete silo which is very similar in structure to the " Kentish Silo " -.d z o a: I » O o o <1 o o The Kentish Silo. 63 designed by Mr. Kains-Jackson, and given in the last edition of this work. Prom the description and figures on the next page it will be seen that it is about three-fourths under- groundj and is covered by a movable roof , which can be taken off in sections, or run to and fro, as required during the process of filling or emptying the pit. Further details will be found in the following particulars and specification : This silo — which I call a "Kentish silo" — could be conveniently placed alongside any farm roadway for ease of access, or adjacent to the home- stead. Its movable roof renders it a receptacle that would serve many purposes of storage. In the specification, cost has not been spared so far as the employment of best materials, but such structures should last many generations ; in fact, the " Kentish silo " would be well nigh an indestructible " farm improvement." The illustrations may be left to speak for themselves. As to the cost, any country builder could give an estimate from the specification given below. The amount, as given to me by a " quantity surveyor," is not a very important one ; but each district having draw- backs or facilities, tenders should be obtained in the localities where the silos have to be built. Doubtless the walls might be made of concrete ; indeed, good concrete has many recommendations, but bricks or stones always form valuable materials in themselves, and are permanent repre- sentatives of the outlay, whereas " concrete " scarcely represents money, and is a substance that somehow seems to invite fraud in the making. Where the proprietor or tenant supplies the right materials and sees them properly mixed, concrete silos may be recommended. Specification of Woeks required to be done in building a sUo for the storage of grass, clover, and other green forage. Mecavator. — ^Excavate to a depth of 12ft. from the surface of the ground, to a length of 80ft. and breadth of 10ft., and cart away the soU to where directed. The earth in the foimdations is to be well rammed down, so as to form a natural bed, and not made up of loose earth ; sand, if found, is to be allowed for by the contractor. Excavate the earth at one end in front of silo, 30ft. long, gradually sloping to bottom of pit, as shown, if required. . BricUayer. — Build in Flemish bond the walls and piers of best hard weU-burnt grey stocks, laid in cement composed of one part of approved cement and three of clean sharp sand, with footing of four courses of brickwork. Build in the one end of wall 16ft. X 10ft., and buUd a brick pier 15ft. X 1ft. 2in. on each side at other end, as shown. Lay the bottom of the pit with concrete 1ft. in depth, with a layer of asphalte 2in. in thickness on top. Form a drain in the asphalte, and concrete through 64 Silos for Fodder Crops. RAIL FOR ROLLINS ROOF HU/U/ll/nC ON TOP Plan THE KENTISH SILO. The Kentish Silo. 65 I line sAows d eptTi of p it * " CONCRETE F-OUNDATIQN ^ :rspecti ve F FLEVATION Of END 66 Silos for Fodder Crops. the centre the entire length, with a fall of Gin. from the centre towards each end, and also with a slight fall from either side of walls. Provide and lay a damp course of unbroken slates, laid, breaking joint in cement above projection of footing course. Leave a rebate at top of walls the entire length to receive the wall plate ; size, 9in. by Gin. Carpenter. — ^Provide and fix a wall plate to run the entire length of pit (80ft.) on each side, size, Gin. by Gin., to receive the rails, and secure same firmly to walls with nails or screws ; provide wood blocks for same, to be inserted in the wall. Founder and Smith. — Provide and fix iron rails, 4in. by 2m., to run the entire length of walls on each side (viz., 80ft.). Provide eight covers, as shovm, vrith galvanised iron roofs, l-16th of an inch in thickness, each 10ft. by 10ft., with bearers and six rollers, three on each side, to fit rails ; make same to run easily, the roofs to have -a pitch of 1ft. Gin. from centre ; the galvanised iron cover to be firmly joined together at ridge, and to project over the bearers and rollers, as also over the walls a distauce of 2in., with a small eaves gutter on either side of the cover; each end of the cover (roof) is to be made so that, when the covers are close together, they will overlap each other slightly, as shown in the drawing, to prevent rain from drifting in. General Semarlcs. — The whole of the work is to be carried out without stoppage, and to the satisfaction of the owner for whom the works are done ; the materials are to be sound and good in their respective trades, and everything left complete and in good working order at finish. The contractor failing to complete any of the works commenced by him, shall be liable for the cost incurred in obtaining another contractor to finish the work, and the amount so forfeited shall be deducted from the original contract. According to the rule given in the next chapter for esti- mating the capacity of silos, the structure here described would hold 240 tons of ensilage ; but, of course, the length could be reduced, as thought desirable, and the capacity diminished in. proportion. There is, we believe, no single silo in the world that approaches the dimensions of that built by the Vicomte de Chezelles, at Liancourt St. Pierre, in the department of the Oise, a side view of which is given on the opposite page. From a letter written by the Vicomte (printed at page 195, where an end view of this silo is also given) it appears that the silo is 216ft. long, by nearly 20ft. in width, and has a depth of IS^ft. The produce of 170 acres of clover and other green crops were put into this pit, and there was still space €8 Silos for Fodder Crops. ior more. The capacity is given in the estimate appended to Mr. Kains- Jackson's article as 1475 tons; but making the same allowance for unoccupied space as we have done in other cases, we estimate its capacity as 1200 tons. The particulars given at pp. 196 — 201 render it unnecessary to enter into more detail at present. A very novel kind of silo, with lever-pressure apparatus, invented by the owner, Mr. C. G. Johnson, of Croft, is shown Me. Johnson's Levee-pkesstiee Silo. in the following illustration. The building is of brick all above ground, with slated roof. It is 28ft. high up to the eaves, 10ft. by 18ft. inside, 9in. walls, with the exception of the front end, around the doorway, which is 14in. work ; and is designed to be filled to 22ft. high of ensilage, leaving the remainder for working room. The weight, which works the lever that ; applies pressure to the mass within, is seen sus- BentalVs Concrete Silo. 69 pended at the further end of the building. Details of the apparatus and mode of working are given at pp. 210-215. Another silo whichj at the first glance, has great similarity of appearance with that of Mr. Johnson, is one constructed by- Messrs. B. H. Bentall and Co., the well-known manufacturers of chaff-cutters, &c., of Heybridge Works, Maldon, Essex, who won the prize offered by M. Goffart in 1882 for the best machine for cutting up green maize for ensilage. The silo is a rectangular building of concrete, divided by a party wall into two chambers, each lift, square and 25ft. deep. The first illustration represents the exterior, and the second shows a section of the silo, while the following extract from Messrs. Bentall's circular gives some particulars of the arrangements. An opening 2ft. 6m. in width (c c), which commences 5ft. from the ground level and continues to the top of the silo, is left in the middle of the front wall in each chamber. Through these openings the silo is filled and emptied. They are closed with faced concrete slabs, 2ft. Sin. wide, 1ft. deep, and Sin. thick, which fit in an internal rebate. A strong boardedf rame-work, with double doors over the openings (c c), supports the roof, raising it sufiioiently to enable the silo to be worked when filled to its utmost capacity. This framework is bolted to the walls, serving as a, tie to strengthen them where they are severed by the openings. A crane, which swings between these two openings, and a winch, standing on the ground directly beneath it, constitute the necessary appliances for filling, emptying, and weighting the silo. The crop, after being cut, is carted to a steam-power chaff-cutter, placed within a few feet of the silo, which cuts it into inch lengths. The cut fodder is then raked out of the box beneath the chaff-cutter into baskets, which are emptied into the silo, where the material is levelled and trampled down. The baskets, which are emptied by hand until the level of the opening is reached, are then hoisted up by a rope attached to the winch and passing over the crane pulley, until they arrive at a suitable height to be emptied by a man standing within the building. As the material rises within the silo, the opening is closed inside with faced concrete slabs. The joints are then plastered to render them au--tight. When the fodder reaches to within about two feet of the top, it is covered with a three-inch layer of whole straw, upon which loose boards are laid so as to make a platform covering the surface within half an inch of the walls. Bucketsful of pebbles are then, hoisted up, shot down, and levelled, until a pressure is attained of a hutdredweight and a half to every square foot. About nine tons of stone.5 are thus required for weighting the contents of each chamber. 70 Silos for Fodder Crops, When the ensilage is required, for use, the concrete slabs which cover the opening are removed until the level of the covering boards is reached. The pebbles are then shovelled out of the opening, ' preferably into a trough leading to some convenient place where a heap may be formed for future use. The boards being taken up, the ensilage is removed in layers Messks. Bentall's Concrete Silo. from the surface of the mass and forked into baskets, which are lowered from the silo by means of t\e rope and crane. Although Messrs. Bentall prefer concrete for building purposes, having plenty of gravel at hand, chey do not recommend it in preference to stone or brick for districts w\ere those materials are the cheapest. In soils Benf (ill's Concrete Silo. 71 where there is no danger of an incursion of water, tho silo might be built partially undergronud. Tho foundations under the floor level are laid with slag, a material, which being impervious to water, prevents the damp from rising. The floor itself, aud the walls, are made of ordinary concrete, consisting of ten parts of clean gravel to one of Portland cement. The walls which are :^::?s^ 1 - /7~ "^z^" v__^ Section of Messes. Bentall's Silo. about 12in. thick at the base and 9in. thick at the top, are firmly l)Ouud together internally by strips of iron hooping, and are strengthened with piers on either side of the openings (c c). The interior angles are filled up and rounded ofl:, with the view of rendering them more accessible to the men who trample down the fodder. The inside walls arc truly and smoothly rendered with a mixture consisting of two parts of sand to one 72 Silos for Fodder Crops. Pearson's Silo and Say Barn. 73 part of Portland cement. The roof is boarded from ridge to eares, the joints being covered with splines, which, together with the boards, are grooved so as to prevent leakage. The accompanying illustration represents a combined silo and hay-barn or shedj roofed witli corrugated iron, designed by Messrs. Thos. Pearson and Co. of Wolverhampton and Glasgow. It shows the silo filled and partially weighted, a travelling crane being used to lift the concrete or iron blocks ; while the further end of the barn is occupied by hay or corn. The silo can be of any length, and from 8ft. to 20ft. in width ; and the shed being made several feet wider than the pit, con- venient space is available for packing weights, &c. If .the contents of the pit are required before the removal of the corn or hay, it will of course be requisite to build the stack on timbers laid across the silo ; and, indeed, such would be desirable in any case, unless the stack is made narrow enough to sink with the silage. Silos of Portable Concrete Slabs. Messrs. W. H. Lascelles and Co. of 121, Bunhill-row, London, exhibited at a meeting of the Croydon Farmers' Club in February, 1883, a silo made of portable concrete slabs, and Mr. Lascelles subsequently gave in the Field, lengthy details of its construction, from which we make an extract. I would make all sUos portable, so that they can be shifted or enlarged, or converted to other uses, if desired. The construction should be so simple that any agricultural labourer of average intelligence can erect them or take them down. No part should be heavier than one man can lift; and the various parts should be of such a nature that they can be sent by rail, or carted on an ordinary farmer's cart, and should be stowed away until wanted, in the least available space. Now, my method of erection is as follows: Having decided where to erect the silo, level the ground, or, if already level, place on it a raised platform of earth of about 12 or 18 inches in height, so as to keep the bottom out of the wet. Then lay down plates of ordinary 44in. by Sin. quartering, with mortices throughout 3ft. apart., centre to centre. Insert uprights all one size— say for example 8ft. long— with a tenon each end in the plate. Drive a head plate in the top of the same length as the bottom pkte, and the framiug is complete. The walls are now formed by screwing slabs of concrete 3ft. long, 2ft. high, and l|in. thick, with a hole in each comer, to the wood uprights. The screws can be galvanised if desired. The joints can be formed by a piece of tarred cord laid in as G 74 Silos for Fodder Orops. the work proceeds, or a rush as used by coopers will do as well. These slabs can be procured foom W. H. LasceUes and Co., 121, Bunhill-row, at 4(Z. per superficial foot, as advertised. They weigh about |cwt. each, can be sent by rail or road any distance without packing, and can be stacked outdoors. They are water, fire, and frost proof. . The general appearance wiU be something like the sketch (Fig. 1) ; I have indicated thatch for the roof, which might be reed, heather, straw, or whatever is cheapest and handiest. Boards, tiles, or slates will do where thatching material cannot be obtained. The wood framework, before the concrete slabs are screwed on, wUl have an appearance something like that shown in Pig. 2. It consists of deal, all of one size (4 Jin. x 3in.), the horizontal plates all mortised 3ft. apart, centre to centre, each mortise being Sin. by lin., and quite through the plate. By this arrangement the plate can be bought all ready with the mortises made ; any length wiU. come in ; it can be kept in stock and cut off as it may be wanted. Fig. 3 is a' sketch of this plate. The vertical pieces are the exact height of the silo side, whatever may be found most convenient. I have taken them at 10ft., and they have a tenon each end 4iin. long, 4Jin. wide, and lin. thick, as shown by Fig. 4. These uprights or vertical pieces should be all alike, so that they, too, like the plates, could be kept in stock ; and the putting up the wood framework of a silo would become as simple a matter as putting up the shutters of a shop. The comers I woxdd arrange as shown by Fig. 5. By this contrivance, the necessity of having special comer pieces is avoided. It will be noticed that I have shown an iron square at the corner. I would have three of these at each corner, about 12in. each way, of wrought iron, say 2in. by Jin., with four Sin. by |in. coach screws in each square. The centre one might be somewhat shorter. The siU-plate I would keep up from the ground by putting blocks of stone or broken slabs under it, to protect it from the wet ; and the lower edge of the bottom slab should be rather below the bottom edge of siQ plate, as shown in Fig. 6. A more simple, but less neat-looking plan to form the walls of sUos will be to use the quartering without mortising and tenoning, simply bolting or nailing the joint, as in Fig. V. I have shown a 6in. i bolt, cost about 3d., but two Sin. wrought nails might be used instead. Although this plan is not so neat-looking as the one first described, it is reaUy more scientific, and it has the great advantage of saving one portion of the process necessary, and thereby reducing the cost, and at the same time increasing the strength of the structure. To tie the structure together, I have bored holes through the plate and tenon, through which oak pins should be driven ; and, about 6ft. or 9ft. apart, bolts should be carried across the silo as tie-rods, both at the top and bottom, with a nut at each end. Although I have specified the uprights as 4|in. by Sin., the size can FIC. 1. ^i. tic*. 76 Silos for Fodder Crops. he increased if found necessary. A 9in. by Sin. deal, with the edge towards the slab, for great silos, or where much pressure is expected, would be better ; or iron might be used instead of wood, without afEecting in any way the principle of construction. rio. e. PiC.9. A comer-tie, formed by a piece of quartering (Fig. 8) halfened down on the top and bottom plates, would stiffen the structure, and could be used in many cases instead of the iron squares ; and an additional tie-rod with plates could be added to the centre of the silo walls (Fig. 9). Messrs. Lascelles issue a pamphletj ■whicli can be obtained on application, giving fuller details on various points. Par- ticulars witb respect to experiments made last season mtli these silos will be found at pp. 288-291. Slate Silos. Messrs. Joseph Brindley and Co. Limited, of 61, King William-street, City, a well-known firm of slate merchants, suggest that slate would form an excellent material for silos. as being " cleaner, sweeter, cheaper, and more durable than any other similar material," and have patented a silo as shown in the accompanying illustration. It is constructed of wrought-iron standards fitted with grooves into which slate slabs slide, the joints being made air-tight by oakum, and the standard kept together by iron rods. If out of doot% Patented Silos. 77 they suggest tliat it should be sunk a few feet in the ground and covered with a light roof of corrugated iron. The advan- tages claimed for this silo are^ that it is imperishable, being constructed entirely of iron and slate ; that it is easily put together, as all that has to be done is to fix the supports and slide the slate slabs into the grooves in them, which can easily be done by any unskilled labourer; that it can with equal readiness be taken to pieces and removed; and, lastly, its cheapness ; but the price we have not seen stated. Patented Wooden Silos. Mr. S. H. Stocks, of Gleckheaton, near Normanton, has patented a silo and press of which the following are particulars : Fig, 1 is a side elevation. Fig. 2 is a plan of top when filled and press applied. Fig. 3 is a transverse section, and Fig. 4 a longitudinal section, and Fig. 5 an end elevation. Fig.l. -^ !i: ' '-' ' ', Sicie Etevaiion, -9- I . 1^1 A A is the silo chamber. A' A' are doors (by preference provided). The covers of the chamber, A^ are llin. by Sin. or 9in. by Sin. planks; these are laid separately on the contents after the chamber has been fiUed. Beneath the transverse planks forming the bottom, a longitudinal beam or beams (B) is laid, by preference of iron. C are the rods or ties ; they are secured at their lower ends to the beam (B) by screw nuts. The upper end of each tie or rod passes through the cover ; D D are volute springs surrounding the ties or rods ; these springs wiU each support a load of six or seven tons. The upper ends of the rods have screw threads cut upon them, and E E are nuts working upon the screw threads; F F are plates on which the springs stand, and F' F' are washers ; G G are 78 Silos for Fodder Crops. cross pieces of timber on whicli the spring plates rest, and these crosa pieces bear upon stiff longitudinal timbers H H; i i are metal tubes to M .''^•'•. M Ptcui of Top with (bver Fig.*. ^^^^^^^X ^^i^asssssa^az mmJLwm^k l-^A^^^■H^<^^^-^^jV^^s■!^liV^,J.^x«^iv^^v,^■■^^^^ ^ : . ■" ■ - . ci) — . ii L Longitwiuuil Seeium^' Trtinsver^e , Section, . protect the screw threads on rods. K is a tap which may be provided to draw off the juices. Patented Wooden Silos. 79 After filling the chamber with the green material to be preserved, the cover is laid as indicated by the drawings, and the screws are turned by levers until the springs are compressed. It is necessary to turn the handles once or twice during the first day or two in order that the pressure may be maintained. When the preserved material is required for use, the silo is opened only at one end where the doors A' are placed. Two of the planks of the cover are taken off ; to admit of this the pressure is relieved for the time, and when the planks have been got out, the nuts are again screwed up tight. In this way the material may be worked out as required, and the only exposure to air wiU be at the face when the fodder is cut for use. The foregoing sketclies represent a wooden silo, but the apparatus is also applied to corrugated iron silos, concrete, &c. Samples of oats, clover, and grass, preserved by Mr. Stocks in one of his silos, were in very good condition when sent to the Field office, and some butter, the produce of his silage- fed cows, was excellent. Messrs. Ghurchton and Co., of 49, Queen Victoria-street, London, have patented a mode of constructing wooden silos, for which they claim extreme simplicity and ease of erection, with facility of removal, if required, and state that they are only about half the cost of masonry or brick silos of equal capacity. They are formed of yellow deal planks and battens, and all the parts are numbered and marked so that they may be put together by ordinary farm labourers, under the super- intendence of the master or a foreman. A rectangular frame, 12ft. long and 8ft wide (or larger as may be desired), is laid upon the ground, and the soil dug away from the interior to the depth of 5ft ; upright battens, 10ft. in height, are fastened to the inside of the frame, and rest against the 5ft. earthen walls of the pit, and the soil that has been dug out from the centre is piled up outside the upper half of the battens, so as to form a raised bank round the portion of the silo that is above ground-level. The principal parts of the framework are made of timber either llin. by 3in., or 9in. by 3in., dimen- sions which are estimated to be capable of resisting both internal and external pressure, while the sides, tops, and bottoms vary from l^in. to 2iin. in thickness. 80 Silos for Fodder Crops. Of course the purchaser of silos of this character would hare to take into consideration the probable duration of the material, and other circumstances attendant on their use, such as the nature of the ground, &c. ; for in some localities, with good sound soil, no drainage might be necessary, whereas in others 5ft. of soil could not be dug out without coming to Chuechton's Wooden Silo. water, and the woodwork is not caulked or rendered water- tight. By a modification of the process, however, these silos can be built wholly above ground ; but stronger timbers require to be used, and the cost is accordingly somewhat increased. Messrs. F. W. Eeynolds and Co., Acorn Works, Edward- Patented Wooden Silos. 81 street, Blackfriars-roadj London, have patented a new form of silo, which is represented in the accompanying illustration. It consists of wooden boards planed on the inside, and jointed to suit the radius of the required circle. These boards are erected vertically like staves of a barrel, and are held together on the outside by iron bands, which are tightened up by lugs and screws ; the bands beincn in sections. Some of the staves Reynolds's Wooden Silo. are supplied with staples, in which the bands rest before they are tightened. These staves are erected first, and, after the bands are placed in position, the remaining staves are put in a circle inside the bands, and the whole drawn together by means of the screws. A door is supplied, as shown in the illustration, to facilitate the removal of the contents. The roof consists of a cross-beam of timber, with a timber upright in the middle, the whole being covered with rot-proof and An Australian Silo. 83 water-tight canvas, fastened down to the sides of the silo by a baridj drawn together with a screw. The patentees claim for this eilo that it is practically air and water-tight, and that its form enables it to resist internal pressure, besides being best adapted for the sinking of the ensilage ; and they state that the whole structure may be erected in about an hour, and removed in less than half that time. An Australian Silo. The illustration opposite gives a representation of a silo erected by Mr. Walter Lamb, of Eooty Hill and Merilong, Liverpool Plains, New South Wales. Mr. Lamb, having been well satisfied with the ensilage of 26 tons of fodder, on which his stock were doing well, has had silos constructed at Eooty Hill to hold 1700 tons, and intends to ensilage about 10,000 tons on his estate at Merilong. The Sydney Mail, from which the illustration is copied, says : The silo which our artist depicts as in the course of being filled, is. under a large hay-shed. The silo is 67ft. long, 9ft. wide, and 10ft. deep, almost entirely sunk in the floor of the shed. The sides and one end are lined with brickwork 9in. thick, not cemented. One end is completely open, but so made that it could be closed by slabs, and in the centre there were projections so that a partition of slabs could be made. Thus this long silo coidd be converted iuto two. A slight slope in the rock bottom afforded draiaage. The excavation and brickwork of this silo cost about 43i. A similar excavation if lined with ordinary wooden slabs would entaU the expenditure of 27Z. At the time of our artist's visit it was being filled with green maize, a poor crop consequent upon the late droughty season. A portable engine of eight -horse power was on the bank, driving a chafEcutter, which was cutting the stuff into haK-inch stuff as it was brought from the field by bullock teams. When the bottom of the silo was covered to a depth of 2ft., a horse was ridden through the stuff, so that it might be well trampled. Mr. Lamb has placed this silo under the shed simply as a matter of convenience. Hay may be stacked on top of it if necessary. In the case of the larger silos which will be made at Rooty Hill and Merilong, the covering wiU be of the simplest and least costly character. He intends to prove to his fellow pastoralists that with the ensilage made from natural grasses saved in a good season,, stock in a bad one can be saved from starvation, in fact, kept fairly weU for a year at the cost of 8s. 9d. per bullock, and Is. 9(2. per sheep. The weighting is done with earth ; and by placing a frame on the top of each. 84 Silos for Fodder Crops. silo he will save the cost of labour incidental to filling up the silo after the shrinkage of the stuff. Mr. Lamb uses no top covering between the eusUage and the earth. The bottom of his silo is the natural rock. . At the estimate^ as in other cases, of 50 cubic feet to tlie ton, this silo would be of 120 tons capacity, and the cost little over 7s. per ton. Considering the high price of labour in the colony, this seems a very reasonable figure. Ensilage Stacks. In the last edition of this book was inserted a letter giving & description of an ensilage stack alleged to have been made in an open Dutch barn by Mr. Van der Breggen in Holland ; but it has since transpired that the writer of the letter was mistaken on one point, for although a stack of green grass had been built up in a Dutch barn, it was not an open one, as the space between the posts had been boarded up, thus turning the open barn into a closed wooden silo. Other attempts have, however, been made to dispense with walls, and M. Cormouls-Houles, secretary of the Agricultural Society of Mazamet, Tarn, in the South of France, gave in French agricultural journals, in October last, the following particulars of an experiment he had carried out : Taking our idea from an American agriculturist, and wishing to avoid ^11 the precautions and silo building expenses that seemed to us super- fluous, we placed last spring, some thirty cartloads of fresh grass and rye upon the earthen floor of a shed on the farm at Montledier. The mass was about 12ft. square and 13ft. high. Four days were employed in making this stack, on the top of which was placed planks loaded with stones, creating a pressure of about 2601b. to the square foot. The sides of the mass reached the walls of the shed, but the two ends remained exposed. These were pared away and made trim. The compression of the weights reduced the bulk, in less than a month, from four yards to as many feet, subsequent shrinkage being scarcely noticeable. Decomposition soon showed itself on the exposed ends, and caused such a disagreeable smell that, for the moment, we thought our experiment would be a failure; but the silo is now opened, and a careful examination of the compressed forage has shown that the first vertical cut was, as we expected, entirely decomposed for 6 to 8 inches. The top surface in contact with the planks was scarcely changed, and only for a couple of inches. Beyond the first vertical outside cut, the interior mass, perfectly ^Ensilage Stacks. 86 homogeneous and impermeable to atmospheric influences, had undergone a most regular fermentation, had become solidly compact and of a yellow- green colour, giving a sugary, alcoholic smell; it was in perfect preserva- tion, having a temperature 40° to 46° 0. (104° to 113° Pahr.) and when offered to the cattle of the farm they ate this ensilage greedily, and in preference to the best hay. Since the time of opening, a regular portion has been taken daily, without losing any of its appetising qualities. Our regret is that the experiment was made on a small scale. We shall make another, after a brief delay, and are confident we can easily reduce the loss in the sides exposed to the air. Messrs. Pearson and Co., of Wolverhampton and Glasgow, represent, in the accompanying illustration, a simple con- trivance for compressing ensilage stacks by means of winders at the sides. Beams and planks are laid on the top and at the bottom of the stack, and, as the compressors are portable, they can be taken to the stack wherever it may be most convenient to build it. A light corrugated iron portable roof is provided by Messrs. Pearson, from whom particulars as to cost may be obtained. The Eev. C. H. Ford, writing in the Field, gave the following particulars of an experiment carried out in the county of Durham : 86 Silos for Fodder Crops. Mr. Coltman, of Hardberry Hill, near Middleton in Teesdale, last sumraer made a frame as follows : He let four larch poles into the ground, so that 12 feet were above ground, in the open air. He thus inclosed 7ft. square; to the posts he nailed slabs of wood l^in. thick, leaving an interval of 6in. between the slabs. Fourteen loads of inferior grass were stacked within this inclosure, which were estimated to weigh about 8 tons. The top of the grass, well trodden, was covered with boards. Ashes were laid on the boards, and on the boards were evenly- distributed about 3 tons of clean river stones. The stack was not even thatched. The ensilage, when cut into, was found to be moulded all round the sides to the depth of 6in. ; on the top, under the boards. Sin. It was of a brown colour, of good quality considering the coarseness of the material, and was greedily eaten by his cows ; and so well did they milk on this food that, when it was consumed, he purchased a ton of ensilage at 30s. of Mr. Bainbridge of Middleton, and led it four or five mUes up a very hiUy road to his place, and, mixing it with bad hay of his own to spin it out, consumed the whole. We give the above particulars about ensilage stacks, but witbout recommending tbeir adoption; for we tbink it very probable that an insidious amount of waste goes on of which the mere external decay affords little evidence. Grood palatable provender may be produced, to a certain extent ; but this is not the sole test of economy, as will be explained in the chapter •on Fermentation in the Silo. Ensilage in Baeeels. The packing of grass and other herbage in barrels has «xoited the attention of many persons as an easy method of ensilage, and it has been practised with more or less success for a number of years. At the National Agricultural Convention of America, held at Chicago, in February, 1883, Dr. J. T. Smith said : " I got this ensilage fever about fourteen years ago. It originated in Vermont by a man of the name of Brown, who put green hay in a barrel, and tramped it down solid, headedit up, and kept it for three months. Ever since that, every article that I have seen on the subject of ensilage has very much interested me." Barrels, from their shape, are not convenient for packing green fodder, as when it shrinks, there must be cavities left at the curvature of the staves ; and the capacity being so small, Unsilage in Barrels. 87 the amount of damaged fodder is likely to be proportionately large. Professor Wm. Brown, in his report on experiments at the farm of the Ontario Agricultural College, says : We considered it would be a good thing to be able to show that live stock can be fed on green fodder either when importing from, or export- ing to, Great Britain — summer and winter. For this purpose we took ordinary sized oak barrels, as also larger barrels, such as are used for beer, and lastly a very large oak tun — capacity 60 cubic feet. We found it very dif&cult to fill a barrel solidly round the edges with screw power, as the material tends towards the centre and leaves empty space adjoining the circumference, even when the fodder is in inch lengths. Thus we had to pack with the hand and lever power in addition to the screw. This was the first trial. The second consisted in the same size of barrel, but fitted inside with a square box, so as to allow of the screw pressure being equal on all parts. This necessarily diminished the capacity for fodder, as vacancies remained between the box and barrel. In order, therefore, to obtain an ordinary barrel capacity along with the inside box, a larger barrel was employed as our third example ; and, still further to insure success, the vacant spaces were packed very solidly with earth — earth being also placed beneath the box and on top of fodder when finished ; so we had green fodder com- 3)letely inclosed, first, by an air-tight box ; second, surrounded by a six -inch packing of loamy soil ; and third, outside, by an air-tight hardwood barrel. In each of these three forms we used out and uncut fresh clover, rye grasses, and permanent pasture — very succulent and none near maturity ; the plants were so tender that the screw abrased and discoloured them as well as pressed out the natural sap to a considerable extent. Mr. H. Woods, in his lecture at South Kensington, speaks more favourably of the result of his experiments : Two years ago we put a quantity of ohafCed grass and other material into casks, ramming it down compactly, and weighting it and covering it vnth bran, as in the silos. The restdt was so satisfactory that last year we extended the experiment, using casks of various sizes. The ensiled material consisted of maize, oats, brank, spurrey, and common grass. The casks were fiUed at different times between July and September ; an operation easily, economically, and expeditiously performed. When opened in the present year the contents were found to be sound and good. •Hiere is therefore no doubt that, on well-conducted principles, with the aid of artificial pressure, crops may be ensiled in casks available for the use of cowkeepers, resident in large towns. Brewers^ grains have been stored in barrels for this purpose. Sir H. Allsopp recently stated that it was done by his father about fifty years ago. 88 iSilos for Fodder Crops. The Eev. 0. H. Ford gives the following account of a barrel experiment carried out in his part of the country : Mr. John Gargate, of Langdale Beck, near the High Force in this county (Durham), is a lead miner, and has a little grass land. He filled a barrel, measuring 4ft. high by 31in. in diameter, with grass from his meadow, and refilled again and again till it was full, weighting it with clean river stones. He consumed the content, which was excellent ; and, spinning it out, it lasted his two cows seven weeks. Why should not every cottager who keeps a cow, like Mr. Gargate, have a row of barrels somewhere under cover filled with roadside grass, hedgeback grass, cabbage leaves, lettuce ditto, pea haulm, and even lawn mowings ? I venture to say that they would find it a most useful addition to their cow's dietary, and the improved quantity and quality of their milk and butter would amply repay them for their labour. When there is an available supply of old barrels already at hand, they may be turned to some account in small experi- ments of this kind ; but it is very doubtful whether it will prove economical, as a rule, to silo green crops in such receptacles, wherein there must necessarily be a greater pro- portion of damaged fodder than in larger silos. Their cost, too, if purchased, would be high as compared with their capacity. An ordinary beer-barrel of 36 gallons contains barely six cubic feet when "full to the bung; " whereas many persons give a cow a cubic foot of silage a day, some giving two or even more. Eight or nine 36 -gallon casks would be required to hold a single ton of silage of average weight, even if the barrels were perfectly full ; but considering the large amount of shrinkage that ordinarily occurs in the material, when would the barrels be perfectly full ? From the dimensions given of Mr. Gargate's barrel-silo, it was probably a " butt," of the capacity of 108 gallons, or three ordinary beer-barrels, and would hold about 1 7 cubic feet, or one-third of a ton of silage, and thus would allow the two animals about 71b. or 81b. a day each for the time stated. CHAPTER IV.-COST OF SILOS. The cost of silos must necessarily be influenced by various circumstances, sucli as tlie materials of wMch they are made, the dimensions that are chosen, the nature of the soil on which they are built, and the power of adapting existing buildings to new purposes. It is impossible to lay down a general rule a3 to what any particular structure should cost, even when the size and materials have been determined on, because local conditions will make a considerable difference in the outlay, ajid what may be a. cheap mode of building in some districts will be very expensive in others. In certain localities, abounding in gravel and sand, concrete may be very cheaply made, if there is a sufficient supply of water to mix the cement ; in other places it may be advisable to have recourse to quarried stone ; elsewhere brickwork may be more economical; while some estates may have an abundance of timber that can be profitably turned to account. Even those who would adopt the simplest form of silo, by merely digging a pit in the ground, will find that they cannot advantageously carry out in loose, porous soils, liable to incur- sions of water, what others can readily accomplish in firm, sound earth, out of the reach of floods. The mere cost of excavation becomes a considerable item where pits are dug in the ground, whether these are or are not lined with masonry, concrete, or planking. Work of this kind may be said to have a fixed rate of cost in proportion to size, because, if you wish to have a pit of 10 cubic yards capacity, you must dig out 10 cubic yards of soil, and if you wish to make it two, three, or twenty times larger, you have two, three or twenty times as much work to do, and the cost is proportionately increased. 90 Silos for Fodder Crops. It is otherwise witli structures built above ground. There, if you double the length of each of your walls, you double the cost of building them ; but the space they inclose is increased fourfold, and consequently the relative cost of that space is only one-half that of the smaller enclosure. And if you make all the walls ten times as long^ the space is increased 100 timeSj and the relative cost is only one-tenth. Obviously, therefore, large silos must be relatively much cheaper than small ones, except so far as regards the mere cost of excavation ; and even where excavations form part of the scheme, if they are lined with masonry or concrete, &c., the cost of building walls in these structures will follow the same law as when the walls are wholly above ground. Where there are unused barns, outhouses, &c., they may often be rendered serviceable as silos at a very moderate outlay, as will be seen from quotations given further on. Estimations of Oapacitt and Cost. What is here proposed to be done is, not to say that silos of such and such dimensions can be built in any way at a given cost ; for, although some readers might find it true, others would find it false. Even where a manufacturer in London or any other large town undertakes to supply materials at a certain price, the conveyance by rail and road may add considerably to the first expenditure, especially if workmen are sent like- wise. Widely divergent statements have, however, been made pubHc as to what silos have cost, or must cost, but so little has been said to explain the circumstances affecting the respective buildings, differences in size, and variations in estimates of capacity, that the conflict of assertion has been very bewildering. It is thought, therefore, that a collection of facts from various sources — but for the most part English — may be serviceable to those who would form a notion of the outlay under circumstances having a certain degree of resem- blance to their own ; for, even though the prices may differ, there may be something to learn as regards modes of con- struction or utilization of different kinds of material. Cost of Silos. 91 In giving these statements of cost, an endeavour lias been made to reduce them to a common standard. One m^an may say tliat his silo has entailed an outlay of a certain number of pounds, and that it will contain so many tons of fodder; and another may have a larger silo but be content with a much more moderate estimate of its capacity. Obviously no fair comparison can be made under such circumstances, and therefore, in all the records here given, the capacity of the silo in tons is calculated at the rate of fifty cubic feet to the Unglish ton — we say English ton, because the American ton is only 20001b., and therefore is about one-tenth less than ours, being, in fact, a little under 18cwt. Some persons have taken 561b. to the cubic foot {i. e., 40 cubic feet to the ton) as a basis for calculating the capacity of silos; but this estimate is too high. In the first place, 561b. is considerably above the average weight of silage ; and although one instance is on record (p. 216) of 601b. being reached, there are several instances (pp. 307 and 332) of only about 301b. In the second place, when the silage has attained its maximum weight, the silo is never full. Others have proposed to take two cubic yards as represent- ing a ton ; and this is certainly much more correct, as an average estimate, than that of half a hundredweight to the cubic foot. At first sight, too, it seems hardly possible to have a more simple formula ; but when one comes to put it into practice, it proves by no means so simple as it appears, because the measurements of silos are seldom or never found to be even yards, and to reduce feet and inches into cubic yards of 27 cubic feet each is more troublesome than to calculate the tonnage by the process here adopted. The reasons which originally induced us to take 50 cubic feet of capacity as representing a ton of silage were these : — M. GofEart has shown that his silage, well compacted under heavy pressure, had a weight of rather over 800 kilogrammes the cubic metre, which is equivalent to almost exactly 601b. per cubic foot. He also stated that, with care in filling the silo, only about one-tenth of the space was unoccupied when the H 2 92 Silos for Fodder Crops. fodder had settled dovm. If, then, we take 50 cubic feet at 501b. each, we get 25001b. ; but, deducting one-tenth for unoccupied space, we have a very close approximation to the English ton, which is 22401b. Silos in general are seldom or never likely to contain more than a ton weight of silage in 50 cubic feet of space, whereas many that are unskilfully filled and insufficiently weighted will hold a very great deal less. How greatly some persons may be out in their estimates will therefore be seen by the following statement made by an owner of silos in reply to questions issued by the U.S. Department of Agriculture : "Last season my silo was 32ft. by 14ft., and 12ft. high; I have added 10ft. to the height, and built another the same size. The whole capacity is now 1000 tons." This is a remarkable example of exaggerated estimate. The cubic capacity of these two silos is under 10,000ft. each, and 1000 American tons are equal to 2,000,0001b.j so that, if not an inch of space were left unoccupied, the contents would have to weigh more than 1001b. per cubic foot to make up the weight stated. Our estimate of the capacity of these silos is under 200 BngHsh tons each — the total equivalent for the pair being about 440 American tons, instead of 1000. Cost oi' British Silos, specially consteucted. Of the silos which have been made in the United Kingdom, full details of cost have been made known in comparatively few instances; and in those cases where information is given it is often less explicit than could be desired. We here summarise the particulars given with respect to silos which have been specially made for the purpose, whether they are elaborate and costly structures or mere pits dug in the soil ; and in a subsequent page will be given those silos which have been formed by the adaptation of already-existing buildings. They are arranged in the order of cost per ton of capacity — 50 cubic feet being taken, as previously explained, to represent a ton. If the cost per cubic foot should be required, a very close approximation can be obtained by Cost of Silos. 93 taming tiie shillings per ton into farthings per cubic foot; BO that 20s. per ton would be about 20 farthings, or 5i. per cubic foot. Small silos generally cost more per ton than large ones, and therefore they head the following list : The Eev. 0. H. Ford's silo (page 224) has proved a very costly one for its dimensions — 15ft. by 8ft., and 9ft. deepj for, owing to the unfortunate invasion of water, and expense of well, &c., to remedy the defect, the outlay was raised considerably above the original estimate. Its capacity is 20 tons, and the cost was bOl. Is. ScZ., or 21. 10s. a ton. Mr. Firman's silo at Oraig Park (page 333) is a 10ft. cube, built of concrete, and has a capacity of 20 tons. The cost was 36Z., or 36s. per ton. Mr. Wood's two silos (page 306) are each 15ft. long, 10ft. wide, and lift, deep, entirely below ground, and built of concrete, roofed over. Capacity, 33 tons each ; cost of the pair 1001., or 30s. per ton. Mr. Kenyon's silo (page 308) is llfft. long, 10ft. wide, and lift, deep, excavated near the edge of a bank, and faced with bricks set in cement ; the floor is made of flag-stones, laid in mortar and jointed with cement, and a drain runs below the foundation, to carry off water into an adjacent stream. At the four corners, brickwork pillars are carried up to support a Hght roof, so as to form a sort of Dutch barn, for storing hay, &c. Capacity of silo, 25 tons. Cost (including covering boards) 35Z. 10s., or 28s. per ton. Lord Ashburton's three silos (illustrated on page 57) are each lift, square and 12ft. deep, built of concrete, 12ia. thick, except where the walls back against the earth, in which case they are reduced to 9in. The front of the silo was inclosed with ledged shutters, to keep out drifting rains. The following statement of the total cost, including pressing apparatus, is given in the " Journal of the Bath and West of England Society :" 94 Silos for Fodder Crops. £ s. d. Cost of tlie building, including walls, floors 6iii. thick, output doors, roof, eaves-gutters, inclosing shutters, excavation and haulage 113 14 3 The 12 standards for compression 27 The cover planks. Sin. thick, and the six transverse timbers 10 3 6 Hydraulic jack 6 Total £156 17 9 As in other cases where silos are specially bnilt with a view to permanence^ the cost cannot fairly be compared with others in which less regard has been paid to durability. The total capacity of these three silos is 4350 cubic feet, or 87 tons ; and the cost for the building alone about 26s. per ton; the pressing appliances amounting to about 10s. per ton in addition. On the farm of Young's Paraffin Works (page 328) a silo 20ft. long, 8ft. wide, and 7ft. deep has been built partly of brick and partly of planks. The capacity is 22 tons, and the cost, exclusive of cartage, was 261. 15s., or about 24s. per ton. Mr. Johnson^s lever-pressure silo (of which illustrations are given at pp. 212-213) is built of brick with slated roof. It is 18ft. long, 10ft. wide, and 28ft. high up to the eaves, but 6ft. of this height is left for working the machinery, so that the total capacity, at 50 cubic feet to the ton, would be about 80 tons. But Mr. Johnson's silage weighed very much more than usual, as it reached 601b. per cubic foot ; and at this rate, if the whole space were occupied, fully 100 tons might be put in. The total cost of the silo and apparatus was about 150L, of which 651. was for masonry, 40Z. for pressing apparatus, and the remainder for roof, &c. ; but Mr. Johnson was his own engineer, and the cost would have been higher had a professional man been employed to superintend the work. Deducting 4<0l. for pressing apparatus, the cost, at the same rate as in other cases, would be about 22s. per ton. Mr. Hunting's silo (page 301) is 40ft. long, 12ft. wide, and 10ft. deep, built of stone, with an inside lining of bricks laid in cement, and concrete floor ; the walls -are 2ft. thick, and Cost of Silos. 96 the roof of corrugated iron. Capacity, 96 tons ; cost about lOOL, or 21s. per ton. Mr. Edwards's silos (page 276) have eacli a mean width of about 8^ft. and a length of about 18ft. and depth of 8ft. Capacity about 25 tons each ; cost of the pair a few shillings under 50L, or about IZ. per ton. Mr. Gibson apparently has altered his silo since 1882, when the description was written which is reprinted on page 273 j for he states in the '^E.A.S. Journal" that it is 17ft. deep and has a galvanised iron roof (formed with frames on hinges, which are raised by means of pulley-blocks), and that the cost, including 5 tons of cement weights, was 230Z. As the capacity would be about 240 tons, this would amount to about 1 9s. a ton. Mr. Swan (page 292) has two silos, each 27ft. long, 7ft. wide, and 14ft. deep, built of 14in. brickwork faced with Port- land cement. Capacity 52 tons each; cost lOOZ. 10s. 3cZ. or about 19s. a ton. Mr. E. Johnston, of Tan-y-Park, near Cardiff, made two silos by running a brick wall across a portion of a barn, and dividing the space into equal compartments by another brick wall. The cost of this operation was 20?. Is. M. But Mr. Johnston gives in the " R.A.S. Journal" a statement of what these silos would have cost if they had been altogether newly built. The dimensions inside are given as 17ft. long, 15ft. wide, and 17ft. high, and the number of cubic feet as 3825 ; but apparently there is a wrong figure in the dimensions, as 17x15x15 gives 3825 as the product. The cost, in 14m. brickwork, is stated as follows : £ s. d. Bricks, 23,000, at 308. per 1000 34 10 Lime and sand 2 15 Two doors and frames 1 15 Bottom cemented 3 10 Roof 12 15 Labour and building 1117 £67 2 Taking, as before, 50 cubic feet to the ton, 3825 would give 96 Silos for Fodder Crops. tlie capacity as about 76 tons ; and the cost about 175. Qd. per ton for a new building, or little more than 5s. per ton for the oonversion. Mr. Mouflet's wooden silo (page 281), is built of double boarding, with an intervening layer of puddled clay. It is 24ft. long, 12ft. wide, and 10ft. high, and has a capacity of about 58 tons. The cost was 53Z., or rather over 18s. per ton. Sir T. B. Colebrooke (page 318) built for his tenant, Mr. John Morton, a stone silo, 15ft. long, 12ft. broad, and 12ft. deep, or 48 tons capacity, the cost being 38Z., exclusive of cartages, or about 17s. Qd. per ton. Mr. Pochin (page 316) has erected two sUos, each 24ft. long, 9ft. wide, and 12ft. deep, with stone walls 2ft. thick. The outlay is estimated at about 85Z. ; and as the capacity would be rather over 60 tons each, the cost would amount to about 17s. per ton. Lord Blantyre^s silo (page 319) is 54ft. long, 20ft. 4in. wide, and has walls 12ft. high, with the floor sunk 3ft. below the surface. The walls are of red brick, 14in. thick, and, as will be seen from the description, it is expensively fitted up. The cost was as follows : — Digging, carting, and carriage, 32Z. 4s. 6d. ; ironwork, 62Z. 16s. 2d.; stones, bricks, and cement, 140Z. 12s. Qd. ; slater and plumber work, 38L Is. — total, 273L 14s. 9d. The capacity is about 330 tons, and the cost 16s. 6d. per ton. Mr. Bateman's silo (page 274) is very similar in character to the " Kentish sUo," of which an illustration is given on page 64. It is divided into three compartments each about 15ft. square, and 13ft. deep, the total length of the building outside being 47ft. and the width 17ft. The walls are of concrete faced with cement, and are 1ft. thick. The roof of two compartments was of corrugated iron (for which it is proposed to substitute Willesden paper) ; the third was covered by a haystack. The total cost was about 160L, or 19s. a ton on a total capacity of about 170 tons. Mr. Bateman says that by roofing with Willesden paper, instead of corru- Cost of Silos. 97 gated iron, the cost would be reduced by about 20Z., wbich would lower tbe rate to about 16s. Qd. per ton. Mr. Wills's silo (page 244) is 14ft. by 12ft. and 13ft. deep, tbe walls being of limestone, 2ft. tMck, tbe floor of flags, and tbe roof of pantiles. Capacity, 43 tons ; cost about 36Z., or 16.S. &d. per ton. Mr. Kirby's silo (page 283) is 24ft. long, 8ft. wide, and 12ft. deep, half above and half below ground. It is built of 14in. brickwork, and roofed with galvanized iron. Capacity, 46 tons; cost 30Z., or 13s. per ton. Mr. Hamilton's silo (p. 318) is built of brickwork, cemented, and concrete floor. It is 13ft. by 10ft., and 13ft. deep, with 34 tons capacity, and cost 22Z., or rather over 13s. per ton. Mr. Eennie's silo (page 329) is built with 2ft. stone walls, and floored with engine ashes covered with tarred wood. It is 32ft. by 9ft., and 9ft. deep (5ft. below ground), and has 52 tons capacity. The cost was 30Z., or about lis. Qd. per ton. Sir J. P. Dillon's silo (page 339) is 40ft. long, 10ft. wide, and 10ft. deep, and cost 72L, of which 14L was for apparatus for lifting the weights. The capacity is 80 tons ; and this, on the cost of the building alone, would be equal to about 14s. 6d. per ton. But Sir John Dillon says the size of the silo could be doubled for another 30L ; in which case the cost would be reduced to lis. per ton. Mr. Duncan's silo at Benmore (page 330) is built of con- crete, with wooden roof, and cost 160Z. It is in two compart- ments, each 20ft. square, by a like depth, 15ft. of which is below ground on a slope. The capacity is 320 tons, and the cost 10s. per ton. A combination silo (page 341) has been built in Ireland, from iron rails and boards, with a front of masonry. It is 70ft. long, 16ft. wide, and 16ft. deep, divided into five compart- ments, and has a capacity of 336 tons. It cost less than 120Z., or about 7s. per ton. Mr. Eamsay (page 322) has a silo 28|ft. long, 14ift. wide, and 15ft. deep, on sloping ground, built of double bricks. 98 Silos for Fodder Crops. cementedj with a slate roof. Its capacity is 120 tons ; and it cost about 401., exclusive of cartage, or about 6s. 6d. per ton. Mr. John Bourne (page 254) had a pit, 30ft. long, 15ft. wide, and 9ft. deep, excavated, and covered with a corrugated iron roof on a light wooden frame. It has 80 tons capacity ; and the total cost was 15Z., or less than 4s. per ton. Mr. Scott's silos (page 235) are three in number — one 10ft. long, 13ft. wide, and 12ft. deep, dug in the ground (soil, clay upon chalk) and cemented, at a cost of about 6Z. The other two, which are lift, in length, and 8ft. in width and depth,, were formed out of cattle-feeding pits at a cost of about 30s. each. The first-mentioned would be little more than 3s. a ton capacity, and the others about 2s. a ton. Mr. G. Young (page 321) constructed a silo in a sloping bank, the sides and ends being of wood planking. It is 60ft. long, 10ft. wide, and 10ft. deep (5ft. underground), and has a capacity of 120 tons. The proprietor (Sir G. Houstoun Boswall, Bart.) gave the timber, and the cost to the tenant' was about 151., or rather over Is. 6d. a ton. Mr. Solomon (page 285) puts the cost of digging his earthen silo at 30s., which seems a very moderate sum, considering the size of the pit, viz., 21ft. long by 12ft. wide, and 9|ft. deep. It is not clear, however, how much of this depth was temporarily made up by boards j but supposing the excavation to have been 6ft. deep, the cost would be little more than 6d. a cubic yard. Mr. Solomon estimates the cost at Is. Qd. per ton of silage. Mr. Urquhart's silo, on Lord Seafield's estate (page 320) was dug out of a bank, at a cost of 31. 8s. ; and being 16ft. by 16ft., and 9ft. deep, its capacity would be about 46 tons, and the cost about Is. 6d. per ton. This cost (Is. 6d. per ton capacity) seems as low as it can well be, in this country, for earth silos. The mere expense of excavation appears to vary from 8c?. to Is. per cubic yard. Mr. Willan (page 235) got his gravel dug out for 8d. a yard in Hampshire ; Mr. Potter states 9d. a yard as a fair price for excavating chalk in the same county ; and the Eev. C. H. Cost of Silos. 99 Ford (page 224) gives Is. a yard as the cost of excavating clay- in tlie county of Durham. As a cubic yard contains 27 cubic feet, nearly two cubic yards would therefore be required for a ton, on the basis of 50 feet to the ton. As remarked on page 90, the cost of excavation must be a constant quantity ; for if you wish to obtain an underground silo of a given capacity you must dig out a corresponding quantity of earth, whereas, if you wish to make an inclosure above ground, or to build walls in an excavated pit, the relative cost decreases continually with increase of dimensions. With regard to cost in th^ chalk district of Hampshire, Mr. T. Potter says : The cost of silo construction must in a measure depend upon the nature of the soil to be excavated and the price of materials and labour, but by far the most important factor in the calculation is the size of the sEo. Assuming, for instance, that two silos are about to be built, the lesser 10ft. square and 10ft. deep, and the larger 20ft. square and 10ft. deep, also that the walls are to be of concrete 9in. thick, the bottom of concrete 6in. thick, costing 14s. per cubic yard, the walls faced internally with Portland cement at Is. per superficial yard (and the excavation is in chalk soil costing 9d. per cubic yard, and these figures should be a close approximation for Hampshire silos in chalk soil), we should get the following result : Cost. Capacity in Cubic feet. Cost per Cubic foot. Bemarks. Large silo ... 291. Small silo 14J. 4000 1000 If (J. nearly 3i(J. nearly Exclusive of roof or compression appliances. With regard to roofs nothing could be more suitable than galvanized iron, but, instead of the ordinary " principals," or main rafters, curved ribs formed of three thicknesses of 9in. by fin. board nailed together are the best in every way. A waggon load of timber would construct a roof of this kind 60ft. by 30ft., and the total cost of wood, iron, and labour need not exceed 2Z. per square of 100 superficial feet, while single spans up to 30ft. or 36ft. are as easy of construction as smaller ones. OONVBKTED BuiLDINGS. The difference in the amount of alterations and additions in converted buildings varies considerably, and there is a corresponding variation in the cost. In some cases only a. wall or two have been utilised ; and when substantial roofs. 100 Silos for Fodder Crops. concrete floors, and otter additions Lave been made, the outlay has been as great as with entirely new structures of a less lasting character, as will be seen by the following particulars : Earl Portescue's silo (page 240) is 19ft. long, 6fft. wide, and 5ift. deep. Three existing stone walls were utilised, and the fourth built ; and it is roofed with corrugated iron. The cost was 11 Z. 10s., of which about 4Z. 10s. was for labour. Capacity about 13 tons, and cost 18s. per ton. Mr. Harris's (page 238), 35ft. long, 18ft. wide, and lOift. deep, was formed out of a disused manure shed; but the work has been done very substantially, with a good slate roof, and altogether cost llOZ., which, with a capacity of 130 tons, would amount to nearly 17s. per ton. On the Marquis of Bute's home farm (p. 324) a silo 18ft. long, 6ft. wide, and 8ft. deep was formed in part of a barn, by running a brick partition across, and cementing the floor and walls. The cost was lOZ. 16s., and the capacity 17 tons, or about 12s. 6d. per ton. Mr. Kemp's silo, on Lord Seafield's estate (page 320) was formed out of a disused building, and divided into two com- partments by a concrete wall. They measure 16ft. by 13|ft. •each, and 15ft. high. The cost was 80Z., and the capacity is about 130 tons, or rather more than 12s. per ton. Lord Walsingham's three silos (page 261), made in a clay- built barn, and having about 60 tons capacity, cost 30Z., or 12s. per ton. Mr. Lowe's silo (page 253) is 27ft. long, 17ft. wide, and 10ft. deep, the rubble stone walls of an old barn having been utilised, made level, and cemented, at a cost of about 50Z. The capacity is 92 tons, or lis. per ton. Mr. Bourne's, at Hilderstone Hall (page 254), was excavated under the roof of a Dutch barn, and is walled and double- bottomed with bricks. It is 31ft. long, 12ft. wide, and 12ft. deep. The cost (including planks for covering) was 48Z. 13s., and the capacity is nearly 90 tons, or about lis. per ton. Cost of Silos. 101 The Duke of Hamilton's silos (page 271) were constructed in the bay of a barn, the walls being of 14in. brickwork coated with cement, and the floors of concrete cemented. They are each 22ft. long, 8ft. wide, and 10ft. deep, giving a capacity of 35 tons each ; and the cost of the pair was about 361., or a trifle more than 10s. per ton capacity. Lord Londesborough's silo (page 306) is 13ft. long, 8ft. wide, and 10|-ft. deep, made in the end of a barn, at a cost of 121. Its capacity being 22 tons, this amounts to about lis. per ton. At the Croydon Sewage Farm (page 281), a concrete silo 15ft. by 8ft., and 10ft. deep (8ft. underground), was erected against the brick wall of a shed, at a cost of about 12Z. The capacity being 24 tons, the cost amounted to 10s. per ton. Mr. Willan's silo (page 235) was excavated in the bay of a barn, and then bricked and cemented. Its capacity is 1850 cubic feet, or 37 tons, and the cost 181. 10s. 6d., or about 10s. a ton. Mr. A. Grant says (page 231) : " I am now making a silo in a barn, I shall not therefore have to charge for the cost of a roof, as the barn, when the silo is filled, will be just as useful for storage of corn, &c., as before. The gravel which I have dug out (about 51. worth) just balances the cost of digging. The silo will be about 21ft. long, by 16ft. wide, by 10ft. deep — of which depth 7ft. will be excavated, 3ft. filled up to the level of the old barn floor. Bricks and bricklayer's labour, cement, and lime, will cost about 151., and weights perhaps 8Z. more j rough fir slabs 21. I thus get a large silo complete for 25Z. ; but this cheap construction can only be obtained under very favourable circumstances." The capacity of this silo would be 68 tons, and the cost under 7s. 6d. a ton. Messrs. Broderick's silos (pp. 216 and 218) were converted out of existing stone hay-barns, which have been cemented and floored with concrete. The first pair are each 14ft. square by 18ft. deep, and cost about 501. to convert, or 7s. per ton on a capacity of 70 tons each. Another, which is 22^ft. long, 10ft. wide, and 19ft. deep, cost about 20L to convert, or less than 5s. per ton on 85 tons capacity. And 102 Silos for Fodder Crops. another, whicli is 13ft. square by 16ft. deep, cost about 10^, or 4s. a ton on 50 tons capacity. Cost of Silos of Poetablb Oonceete Slabs. Particulars are given at page 73 with respect to the mode of constructing Lascelles' silos made of portable concrete slabs. These slabs, which are 3ft. by 2ft., cost 2s. each, or 4d. per square foot ; and the 4|-in. x Sin. quartering, used for fixing them together, costs 4d. per foot run, if morticed and tenoned, or a trifle less if not. The quantities and cost of materials for the silo described at page 74 (15ft. long, 12ft. wide, and 10ft. high) are thus stated by Mr. Lascelles: £ s. d. 220 feet of post at 4(J 3 13 4 108 feet of plate at 4(J 1 16 90 slabs, each 36in. by 24m 9 Screws for ditto 3 12 iron squares for corners, bolts, cross ties, and tarred cord for joints 1 15 ^16 7 4 The cubic contents being 1800ft., the capacity would, at the rate previously stated (50 cubic feet to the ton), be 36 tons, and the cost about 9s. a ton. The larger the structure, the less would be the comparative cost for materials; and a silo 60ft. by 24ft. and 12ft. high would contain about ten times as much as the above (viz., 355 tons), while the cost would be little more than 3s. a ton. The above is the price in London; to this would have to be added the expense of carriage and of fixing, and of roof also, if required. The cost of fixing the above-mentioned silo is stated, at page 289, to be 21. ; a similar silo is mentioned at p. 288, as erected inside a barn, so it would require no roof; and a larger one, with corrugated iron roof, described at p. 272, cost, including carriage, a trifle under 501. This is 24ft. by 18ft., and 12ft. high, giving a capacity of about 104 tons. Mr. Arthur M. CardweU (p. 288) gave in the Field the Cost of Silos. 103 following estimate, based on his own experience, of tlie total ■cost of a concrete slab silo, 24ft. long, 12ft. wide, and ■12ft. deep, including roof, bricks for weighting, &c. : Silo, 25L ; fixing, 11.; concrete floor, 21.; carriage, 21.; bricks for weighting, lOZ. ; roof, 101. — total cost, 50Z. It need hardly be stated that estimates of cost of different sizes of these, as well as other kinds of silos hereafter mentioned, may be obtained on application to the respective makers. Patent Wooden Silos. The wooden silos made by Messrs. Ohurchton and Co., described at page 80, are made of llin. x Sin. and 9in. x Sin. timber in the principal parts, the sides, tops, and bottoms being of plank lyin. to 2|in. thick. They are supplied ■complete, with bottom and top planks and all necessary bolts and screws, at the undermentioned prices for the sizes named, but larger ones may be had on application. In the ioUowing table we have calculated the estimated capacity of the silos according to the rule previously laid down (50 cubic feet to the ton) and have substituted these figures for Messrs. Ohurchton' s, which are about 10 per cent, higher. We have also added the relative cost per ton on this basis. 12ft. long, 8ft. wide, and 10ft. deep' 16ft. „ 10ft. „ „ 10ft. „ 20ft. „ 10ft. „ „ 10ft. „ 24ft. „ 12ft. „ „ 10ft. „ 28ft. „ 14ft. „ „ 10ft. „ This does not include the roof, the price of which would vary with the material. Messrs. Ohurchton also supply plans for the construction of silos on their principle on payment of a royalty. The dimensions and prices of the circular wooden silos made by Messrs. Eeynolds and Co., as depicted on page 81, are as stated on the next page; but, as in the previous instance, we have substituted our own calculations as to their ■capacity, and added the corresponding cost per ton. Capacity. Cost. ... 19 tons . .. 16Z., or 17s. per ton ... 32 „ . .. 20Z., or 12s. 6d. „ ... 40 „ . .. 26Z., or 13s. ... 68 „ . . 32?., or lis. ... 78 „ . . 36?., or 9s. 104i Silos for Fodder Crops. Capacity. Cost 10ft. llin. diameter by 9ft. high ... 15 tons ... 9L, or 12s. per ton. 12ft. 4in. „ by lift. „ ...26 „ ... 1«., or lis. 16ft. „ by 12ft.. „ ...42 „ ... 20Z., or 9s.&d.„ The waterproof canvas roof would cost from 21. 10s. to 51., according to size, and the covering-boards would be extra. Mr. Stocks' silo with screw pressure is figured and described at page 78. A wooden silo, 20ft. by 10ft., and 10ft. deep, would cost 50L ; and as the capacity is 40 tons, this amounts to 26s. per ton, including the pressing apparatus. The press and springs can be apphed to any silo of the same size at a cost of 181. Cost of Febnch Siios. In France it may be expected that silos would cost less than in England, because labour is cheaper; and the state- ments made by M. Goffart and the Vicomte de Chezelles both bear out this impression. In excavation alone a large saving would be effected. The particulars of cost of M. de Chezelles' silo, at page 199, give 65 centimes per cubic metre (or barely 6d. per cubic yard) as the charge for excavating and carting earth. This compares very favourably with the lowest of the English charges for excavation only, as given on page 190. In one of the American returns quoted in the official report the sum stated for excavating and carting is equivalent to about 2s. 3d. per cubic yard; verily a most remarkable difference. In concrete work there is not such a wide divergence — Mr. Bailey stating it as 10 cents per cubic foot (or about lis. per cubic yard) in America, while M. Goffart gives it at 12 francs the metre (or 7s. &d. per yard) in the account opposite. The brickwork, at 20f. per cubic metre, is equal to about 12s. 6d. per cubic yard. In England, in very favourable localities, concrete may cost 6s. or 7s. per cubic yard, and in others it will cost as much as brick or stone, if not more. Mr. Potter, in the estimate on page 101, puts it at 14s. per cubic yard in Hampshire. M. Goffart gives the following particulars respecting the construction of his last silos, which, he saya, were much more Cost of Silos. 105 costly tlian they would be in many places, owing to the nature of the soil : My farm at Burtin presents exceptional difficulties to the formation of silos. It is traversed by a little river, the N&nt, whicli has a weir across it for the service of my water-wheel, and thus a very high head of water is kept throughout the neighbourhood. Everywhere on the farm, water is found at the depth of about 3ft. ; and, as I always make my silos at least 6ft. deep (because the underground part keeps much cooler in summer than that which is above the soil), I am obliged to make this lower portion water-tight, in order to avoid flooding ; and this entails a pretty heavy outlay. The works are as follows : The excavation made for the foundation of my silos is carried down about 7ft. below the ground level. In order to dig so far down without being stopped by water, it is necessary in the first place, to cut a drain to carry off the waters to the depth of 7ft., and conduct them into the miU stream about 80 yards below the turbine. The excavation being finished without obstruction, owing to this pre- liminary drainage, I lay down, over its whole extent, a bed of concrete, 6in. thick, composed of broken bricks and hydraulic cement. Upon this bed of concrete I build, up to the ground level, vertical walls, which form the boundaries of my silos, making them two bricks (or 18in.) thick. Above ground, I reduce the thickness of the walls to a brick and a half (about 14in), and then carry them up to their full height of about 17ft. Finally, I give the inside and the bottom a coating of Portland cement, so as to make the whole perfectly water-tight. These works cost : 155'562 cubic metres of ordinary brickwork, at the rate of 20 francs the cubic metre 3111f. 24o. 30'47 cubic metres of concrete, at 12 francs the metre ... 365 64 Cost of excavation, coating with cement, and other expenses, about 700 Total 4761f. 88o. My three connected silos thus will have cost me as nearly as may be 4176f. 88c. (about 167?.); and as their total capacity is 812'45 cubic metres, each cubic metre of capacity wiU have cost me 5f . 14o. These explanations suffice to show that silos at Burtin cost more than in most cases. I had to build on perfectly flat ground, often full of water, the intrusion of which into the silo must be prevented at any cost. I had sad experience of this not long ago. The water found its way through a crevice into one of my silos filled with green rye, and all that part which the water reached, to the depth of about a foot, was spoilt. I have therefore spared no expense to attain the desired end, and I am certain of having attained it, by drainage especially. A cubic metre being equal to about 35 J cubic feet, the I 106 Silos for Fodder Crops. total capacity of these silos will be about 28^690 cubic feet, or 570 tons, and the cost barely l^d. per cubic foot, or about 6s. per ton ; but to this would have to be added the roofing, of which no mention is made. The cost of the Vicomte de Chezelles' large silo is propor- tionately much less without its coyering — which, however, is not merely a roof, but is a kind of Dutch barn, in which are stored the grain crops of the farm. From the particulars given at page 199, it will be seen that the cost of the silo alone was about 160L, and that of the barn superstructure 250L, or 410Z. in all. The capacity, estimated as before stated, would be about 1200 tons, or about 2s. 6d. per ton for silo alone, and nearly 7s. a ton if the Dutch barn be considered merely as the roof of the silo — which, however, would not be a fair representation of the facts, seeing that the barn is applied to other purposes. Relative Capacity and Cost of Silos and Hay-Baens. Many landowners build on their estates permanent hay- barns for the use of their tenants ; and as, by the pitting of green crops instead of drying them, it may become desirable to construct one kind of permanent building instead of another, it may be as well, while considering the capacity and cost of silos, to take into consideration also the cost and capacity of hay-barns. No doubt it may be said that hay- barns can be dispensed with, as, indeed, is already done on many farms, where the hay is stacked and thatched, instead of being put under roofs ; but, although this is so commonly done, it does not follow that it is the best course of pro- cedure ; and, unless hay-barns were believed to be economical in the end, it is hardly to be supposed that the owners would go to the expense of building them at all. With the keeping of hay, as with the preservation of pitted fodder, there are two modes of proceeding. You may have sound permanent buildings that will last for generations, or you may have makeshift contrivances which avoid any large outlay at first, but entail a continued repetition of indirect Cost of Silos. 107 expenditure afterwards. Silos of masonry, &c.j may be dis- pensed with, in like manner as it is possible to dispense with hay-barns ; the fodder may simply be buried in the earth, as already shown, instead of being put in permanent buildings ; but persons who have had long experience with the rough methods have nevertheless found it worth their while to go to the expense of replacing them by masonry and concrete, as being, on the whole, more economical. Beginners can choose for themselves which course they prefer. The pitted fodder is so much heavier than hay, owing to its being preserved with all its moisture, and thus being about three-fourths water, that some persons seem to imagine it must occupy a large amount of space as compared with hay. But the reverse of this is the case ; for if a barn were turned into a silo, it would contain about double as many acres of grass as it would hold if the grass were made into hay. Dry hay, as it is commonly called, contains, on the average, about 15 per cent, of moisture, so that in a ton of hay there would be about 17cwt. of really dry substance. The silage made from grass contains, on the average, about 70 per cent, of moisture ; and in a ton there would consequently be 6cwt. of dry substance, or little more than one-third of that con- tained in a ton of hay. Hay, however, would require about six times as much storage room as silage. "V^hen first packed in a barn it could hardly exceed 71b. or 81b. per cubic foot, so that about 300 cubic feet would be requisite to hold a ton. Hence, weight for weight, silage would contain one-third the feeding- matter and occupy one-sixth the space of hay ; consequently, for an equal quantity of feeding-matter, silage would require only half the space of hay. This, however, can only be approximate, and apply to average circumstances. The quantity of moisture in grass, both before and after it has been siloed, varies considerably, and the actual weight of silage as compared with hay must necessarily depend upon the proportion of that moisture I 2 108 Silos for Fodder Crops. wldcli has been evaporated in the one case and retained in the other. Supposing that equal portions of a field of grass were out in the same condition, one acre being converted into hay and another put into the silOj and that, on the one hand, there were no loss in the hay -making process beyond mere reduction in weight by evaporation of water, while, on the other hand, no loss were sustained by fermentation in the silo, then the proportion of silage to hay would vary simply in accordance with the moisture in the grass. Hay contains, on the average, about 15 per cent, of water j and, taking this as the standard for comparison, the relative proportions of silage and hay, according to the amount of moisture in the grass, would be as follows : Amount of Moisture in G-rass. Proportionate weight per acre of Silage and Hay. 83 per cent Silage about 5 times the weight of the hay. 81 78 75 71 65 56 50 4i 4 3i 3 24 2 The highest percentage of moisture in grass silage of which we have seen any analysis is rather over 81 per cent., and the lowest about 51 per cent. As to the cost of permanent hay -barns, there will be found in the Field of March 3, 1883, a plan and statement of cost of some hay-barns built upon the Earl of Shrewsbury's estates in Shropshire, Staffordshire, &c. Although sound and well- built, they are not extravagant structures, but are recom- mended on account of their economy. The cost is from 12L to 14?. per bay, according as a large or a small number is built, and the capacity of the bay is about 14 or 15 tons, so that the cost would be about 18s. per ton; and, as a ton of hay averages about three times as much dry feeding-matter as a ton of silage, 18s. per ton for the hay-barn would be about equivalent to 6s. per ton for the silo. Cost of Silos. 109 EooFS OVER Silos. A considerable difference in the outlay will be necessary if roofs are dispensed with. Such is not unfrequently done in France, where the silos are covered by means of faggots, trusses of straw, or any other convenient matters, being ■stacked over the pit, thus affording shelter as well as weight. In some cases a thicker layer of soil is made to answer the same purpose — a rick cloth being first placed over the fodder, in some instances, if the earth is porous. Both these methods have been adopted by M. Goffart, and the latter is used by some Americans farmers. Still, there is no doubt that roofs are advantageous ; and M. Goffart said on this point : I have of late come to the eonolusion that large silos should not be without a permanent roof. The absence of covering was not inconvenient for my small silos, which could be quickly covered up by means of a few hundred faggots, but it was no longer the same when my silos had each of them more than 500ft. of surface. I have therefore decided to cover each of my new silos by a slate roof, although it is somewhat costly. The most economical roof would doubtless be obtained by the use of bituminous paper, for which a light framework would suffice. Unfortunately it only answers when it is of excellent quality and put up by able workmen. For such a purpose the " Willesden Paper," made by the Waterproof Paper Company, Canal "Works, Willesden Junc- tion, is apparently well adapted. It is 4<^it. wide, made in long lengths, and varies in price according to thickness j the 4-ply or roofing paper costing about 2d. per square foot. Mr. Grant (page 227) points out, however, that this paper will not stand rough treatment, and that men are apt to make holes in the roof with their forks when filling; he therefore prefers corrugated iron. Roofs of this material are shown at pp. 57 and 72 ; and at p. 65 is a sliding roof running on rollers. Boarded roofs, thatch, and other materials are also used, as convenience and economy determine. CHAPTER V.-riLLING THE SILO. As soon as tlie crop is cut, it sliould be put into the pit, and not be allowed to lie and wither in the sun. When water evaporates from the plant, air enters and occupies the vacant cells ; and air in the silo is much more to be feared than damp. Indeed, with the ordinary green crops grown in this country, there seems to be little fear of their containiag too much moisture for ensilage. Even maize, which has a larger pro- portion of water than our grasses and clovers, is not found too moist when pitted alone. MixTUEE OP Dby Mateeial with Geeen Fodder. It has been stated that, in order to absorb the moisture in the green fodder, it is necessary to mix with it some amount of dry chaff. This, however, is a mistake, and is contradicted by the experience of years in France and America, as well as by results already obtained in England. The addition of dry chaff may even do more harm than good, especially if added in large proportions. The effects of mixing dry chaff with green fodder are thus stated by M. Goffart : Wten I first began with ensilage, I had, as the chief means of feeding my beasts, a very large quantity of straw chafB, and whole straw of wheat, rye, oats, &o. To induce the beasts to eat it, I mixed it as much as possible with maize and rye chopped up green ; but I was not long in finding out that the greater the proportion of straw the less the time the mixture would keep. One fifth in volume, or one tenth part by weight, was the utmost the maize would take without being quickly impaii'ed. When I exceeded these limits, the time it would keep diminished continually, and ended by not lasting longer than forty-eight hours. I attribute this to the fact that the straw, which is very dry by itself, takes from the maize too large a proportion of its moisture. Filling the Silo. Ill A moist condition, instead of being a cause of deterioration in ensilage, is, on the contrary, in some measure indispensable to the good preserva- tion of the materials put into the silo. In its normal condition, maize contains 85 per cent of water. When, by the addition of dry straw, the average amount of water in the mixture is reduced below 75 per cent., its good preservation is greatly compromised, and becomes impossible if an attempt is made to go much beyond that. Rye and wheat cliafE is often mixed by M. Goffart with, his chopped green fodder, before putting it into the pit, not for the purpose of securing better conservation in the damp herbage, but in order to render digestible that which is dry. With oat-straw, and other soft material, it sufficed to mix the chaff with the silage after the latter is taken out of the pit. Influence oe Wet Weathee. Prom many quarters at home and abroad, there is evidence that fodder can be pitted in wet weather, and yet do well. M. Goffart thus answers a question on this subject : Is there any inconvenience in ptittiug maize into the silo when wet with rain ? — None at all. Last October I filled my sUo in the open air in frightful weather. On several occasions the rain fell in torrents ; but the success of that ensilage was none the less complete. M. Lecouteux, in an article quoted at page 20, relative to the ensilage of Trifolium incarnatum, mentions that he had put cartloads into the silo when dripping wet ; and the Vicomte de Chezelles did the same with his mixed clovers, the conservation being excellent in both cases. American writers have also given information to much the same effect ; and now we have evidence of a similar character from many English experimenters. Mr. G. Broderick says (p. 219) : "We have pitted grass in dry weather when it was free from external moisture, and also when it was dripping wet, with no material difference in the preservation resulting, except that when it is put in wet there is more soakage at the bottom — which should not be wasted — and less heating during fermentation. With ordinary grass I think it is better to err on the wet side, if either. If it is 112 Silos for Fodder Crops. allowed to dry in tlie sun for a few hours, tlie heating in the silo will be much greater." In Sir Eichard Glyn's silo (p. 237) "the grass was put in very wet, but the sample of ensilage was good both in colour and smell." In Mr. Harris's silo (p. 239), "some of the first crops had been carried in a wet state, and with no bad result." Lord Tollemache had filled one of his silos with wet grass, cut after a night's rain in June, and the contents of the pit, when opened in April, were found to be in sweet and sound condition. His lordship said (p. 249) that "he should now have no hesitancy in filling these silos in any weather j if at all, he would undoubtedly give preference to grass containing moisture." Mr. Trepplin says (p. 259) that some grass cut in September " being carried damp, settled down quickly, and, after being covered with some old hay or a few boards, turned out as good as the ensilage made in the summer and weighted heavily." Mr. Miller (p. 293) siloed meadow grass, and rye grass and clover, when quite wet, and this came out in good condition. Mr. Wilson says (p. 297) "Mine was cut and put into the silo on as wet a day as ever rained on the face of the earth. It was a perfect wet squash when put in." Grass and oats were put in alternately, and both kept remarkably well. Mr. Stobart says (p. 298) that " they did not take wet days in preference to dry days in filling the pit, but the pit had been filled regardless of the weather, and it rained during the whole of the three days the men were at work." The results were very good, as detailed by Mr. Basdale at p. 207. Mr. Kenyon writes (p. 311) : "At the same time that the silo was being filled with coarse herbage from a poor sideland field, we were endeavouring to save a crop of hay from an upland meadow, very favourably situated for drying in ordinary seasons. When the sun shone out for a brief season, all hands repaired to the hayfield; when clouds and rain pre- vailed, they resorted to making ensilage. In the one case, in fact, we ' improved each shining hour ; ' in the other we utilised Filling the Silo. 113 ■eacli wet and cloudy one. Yet, strange to say^ the measure of success was in precisely inverse ratio to tlie care and expense bestowed. The hay — badly weathered in spite of all our efforts — was only used, because only fit, for bedding the cattle, which were actually fed upon the ensilage already described, ensilage composed of the coarsest kind of herbage, and carried cut into chaff, and pitted regardless of the rain. And, what is perhaps quite as remarkable, the animals grew and throve remarkably well during the three months they were fed upon this rough kind of ensilage." In describing the experiments in Mr. Oakeley's silos, Mr. Dunlop says (pp. 373-4) " The second time this silo was filled (in July) it was raining hard ; the grass was quite wet, and was put into the silo during weather in which nothing could be done at haymaking. . . . To-day (March 1st) the ensilage was cut from top to bottom, the result being that the quality of the same throughout was highly satisfactory. Within a few inches from the heather (on the top) the ensilage gave forth a most pleasant aroma, perhaps a little strong, but when it was cut down two or three feet it became perfectly sweet." A number of other letters might be quoted, showing that crops have been pitted in various degrees of dampness from dew and rain, and with more or less satisfactory results ; but sufficient has been said to make it evident that wet is not so injurious as some persons bave imagined, and that, where the conservation of the fodder has been defective, it may have been due to a cause irrespective of the quantity of moisture in the crop. Chopping up Poddee. Our ordinary British fodder crops do not, as a rule, require to be chopped up in the same way as maize. An exception may be made with respect to rye, which is so hard in the straw ; but with our grasses and clovers the operation may be dispensed with; and, indeed, it will be difficult to improve upon the sample of unchopped grass siloed by Mr. A. Grant, who has given details of his operations (with an analysis of 114 Silos for Fodder Crops. the product) in an article wMch appears at page 226. Clovers, will doubtless require greater pressure tlian meadow grass, especially if left till the stems have become hard ; but they should not be so left, it being best, as a rule, to cut fodder for ensilage while it is young and full of sap. Of course, if any- one has convenience for cutting up the fodder into chaff, this may be carried out, as in the case of the Yicomte de Chezelles (page 195), who passed through a powerful chaff- cutter the produce of 170 acres of clover, sainfoin, lucerne, tares, and artificial grasses, before putting the fodder in his silo. Maize, like mangold, is a fodder which is more profitably consumed when chopped up than when given whole ; andas a matter of economy M. Goffart strongly advocates the chopping. For meadow grass and other soft-stemmed crops, however, he does not consider it necessary to go to the same trouble as for maize, rye, buckwheat, &o. He says : " Chopped fodders always pack more regularly and consequently keep better.. Nevertheless, for the smaller plants and aftermaths this operation is unnecessary : it would be time and trouble utterly thrown away." M. Lecouteux also says : " In our opinion, it is useless to chop fodders with short soft stems, such as clovers, vetches, second cuts of lucerne, and meadow grass." Many of our English experimenters, however, think that it is best to chaff grass, &c. ; but some who have tried both methods have come to a different conclusion. Mr Kenyon says (p. 312) : " Hitherto I had always cut the grass into chaff before packing it into the silo ; but last year (1883) I pitted it long, just as it came from the field. This plan, than which nothing could be more simple, has answered perfectly. The ensilage^, although mostly put in wet, like the previous years, is, to say the least, quite as good as any that has gone before it For my own part, although I have water power and chaff-cutters, I don't intend to chop up my grass in future ; for, besides the saving of expense, there is less waste in handling the unchaffed ensilage. In this Filling the Silo. 115 condition, too, it can be supplied to stock in either racks or troughs, whichever may be most convenient." Mr. M'Oonnelj who siloed both chopped and unchopped fodder last year, says (p. 323) that ^^he does not intend to chaff this year before siloing : it is both troublesome and expensive.'^ Mr. Grant says : " Ohaff-cutting is certainly unnecessary, and therefore a useless expense, with all the grasses, &c., which I have mentioned above" — (p. 228). Mr. Broderick says (p. 217): "It is quite unnecessary to chop grass for ensilage : a little more pressure will do just as well." Mr. Biddell reports (p. 272) that the chaffed and unchaffed sainfoin in the silo of the Hon. St. Vincent Saumarez were equally well preserved. Mr. Bateman (p. 275) pitted both chopped and unchopped fodders with good results. We have seen both kinds in such excellent condition that it would be difficult to surpass them in quality; but unchopped fodders do not succeed so well when the stems are strong and stubborn, as when barley, oats, and clovers are allowed to get old and woody. Slow ■;;. Quick Filling. Various persons have advised, with respect to the filhng of silos, that it should be carried on as rapidly as possible, and that, if the process cannot be completed in one day, the boards and weights should be put on at once and not taken off again till the filling is resumed. Such, indeed, was the advice formerly given by M. Goffart ; but he afterwards found cause for altering his course of procedure, as he says : I was wrong when I formerly said : " Fill your silos as quickly as possible." Now that more effective means can be made use of, and that some agriculturists put into the silo 100 or 120 tons a day, I say, on the contrary, " Do not fill the same silo too rapidly ; but so arrange as to fill several silos at a time, m order to allow a settlement to take place." In filling a silo by putting in every day a fresh layer of maize about half a yard in thickness, you will check fermentation sufficiently mean- 116 Silos for Fodder Crops. while, and at the end of a week or ten days of filling in this way the .spontaneous settlement will be so great that the sinking afterwards will not exceed one-tenth of the total height. Such was the result which I obtained at Burtin last autumn. My silos, which are about 164ft. in height, had an empty space at top of about 20in., or only one-tenth of their capacity. This advice is supported by 'the experiences of various other authorities, both in France and America. M. Lecouteux says, in his book on ensilage : It is not necessary to fill a silo to its full height at once. A night suffices to produce a sufficient settlement to admit of a very advantageous refilling, not only because of the new mass added to the heap, but stiU more by reason of the check it gives to a too active fermentation in the layers underneath. This is beyond doubt. Any forage that is freshly cut and put upon a mass that is heated, serves to cool that mass, and from this cooling a general fermentation results which is best adapted to the whole. Writing to the Journal d' Agriculture Pratique, M. Niviere gave the following particulars of an experiment of his : I commenced on May 28 and finished at mid-day on June 5 ; the filling therefore extended over eight days and a half. In prolonging this operation I proposed to obtain a more complete utilisation of the silo, which is 46ft. long, I3ft. wide, and I3ft. deep. Last year the fiUing was carried on rapidly until the forage was about a foot above the walls ; but it sank so much afterwards that the mass was eventually only about 44ft. in height, 80 loads of Trifolium incarnatum having been put in. This year I have more than doubled that quantity, having been able to store 195 loads of meadow grass, mixed clover and rye grass, and Trifolium incarnatum sown with oats. I arrived at this result by leaving rather long intervals during the filling, two being of 18 hours and one of 36 hours complete stoppage. I constantly followed, by means of a thermometer, the changes of temperature, which varied from 15° 0. (59° r.) on the forage arriving at the silo, to 26° 0. (79° F.) and 32° 0. (90° r.) at the moment of resuming operations after stoppages of 18 and 36 hours. An addition of fresh forage checked this fermentation, which after the ordinary night's stoppage always showed a temperature of about 26° 0. (79° F.) at 20in. below the surface, gradually diminishing to 21° (70° F.) towards the bottom, and to 15° 0. (59° F.) at the top. It seems to me clear that the filling may be prolonged much beyond the limit usually laid down ; that you may, for instance, go on filling up till mid-day, and then stop work till next morning; by this means double Filling the Silo. 117 the quantity of stuff can be put into the silo, and the percentage on the cost of construction is lessened, accordingly There is no appreciable difference in the colour and flavour of the different layers ; there is less damage than in the previous year along the walls in the upper portion, and no damage whatever in the lower two- thirds. A cubic metre weighs 920 kilos in the lower half and 880 in the upper (about 681b. and 551b. per cubic foot respectively). The height of the compressed mass is about 8ft. I found at 18in. above ground a wooden lath that I had placed across the silo on the top of the forage at the time when it was 8ft. above ground ; this reduction of about four- fifths is explained by the immense weight of the GJft. of silage which pressed upon that below, and which, together with the weight on the surface, gave a pressure of about 4001b. per square foot. The gi-eatest possible height in the construction of a silo is therefore a certain condition of success and of economy. As to diminution in weight, a sample of green and very tender meadow grass which I inclosed with osier twigs, tied together by galvanised iron wire, and had placed in the centre of the mass, had been reduced from 100 kilos to 63 kilos [i. e., from 2201b. to 1391b.) ; thus showing a loss of 37 kilos, due more, I think, to loss of water by compression than to evaporation by fermentation. M. Lecouteux recently said^ in the Journal d' Agriculture Pratique, with respect to the filling of long silos : With a silo 60ft. long and 12ft. wide it is advantageous not to divide it into compartments by transverse walls. The greater the number of walls the greater the liability to damage (mouldiness), which arises in such parts of the mass as touch the walls. But it is evident that silos of great length can only be quickly filled in two ways — either by putting in the forage without loss of time (which is not always possible, owing to an insufficiency of men or teams, or by reason of bad weather coming on during the work), or else by dividing the silo into several piles formed one after the other, without intervening walls. . . Hurry in the work is by no means necessary ; and it is well not to close the silo until a certain settlement has taken place. By dividing the operation into sections, the maximum of settlement is obtained, by heaping up the mass to its full height. In other words, the same quantity of fodder spread over a length of 60ft. and to the height of 3ft. would not be much compressed by the upper layers ; whereas, if spread over a length of but 15ft. there would be greatly increased height, and better compression by the upper layers. It is useless, however, to close the silo immediately: it should be allowed to settle of itself, and be filled up again after a lapse of two days, then closed and weighted. My two silos at Oer^ay are each about 45ft. long by 18ft. wide. They are only closed and weighted when the fresh fodder has reached a height 118 Silos for Fodder Crops. of 13ft. Eight days are required to fill tlie two ; but there are several intervals to facilitate the settlement, which, I repeat, increases the •quantity stored. This mode of filling (whici. was first adopted by M. HouettSj of La Mothe-Jarry) is better suited to chafEed material than to unchopped fodder, as the latter does not make a good junction between successive piles. From the following illus- tration it will be seen that a movable partition of planks is fixed across the silo, and is kept in place by stanchions, held by iron bolts driven into the floor, while movable struts (h) support the temporary wall. The modus operandi is thus described in the book of M. Lecouteux :' As soon as the maize is cut, it is carted to the chaff-cutter placed at the door of the silo. The chopped maize falls into the silo and forms the heap J ; two men with large shovels fiU the baskets i, which they place upon the truck I ; this runs upon two iron rails screwed down to wooden sleepers, laid lengthwise, and held together by cross-pieces of wood. When the truck is loaded, it is pushed by a boy up to the partition H, the baskets are handed to the builders of the pile JST, who spread the stuff in thin layers and tread it as solidly as possible ; on each layer is scattered a sprinkling of salt, not for the purpose of conservation, but simply as a condiment for the animals. "When the pile has reached the height of the waUs, or a little above, the partition H is drawn back about six feet or so, and a new pile is begun. On the pile being completed, it is covered with a layer of clay about a foot thick, which is well beaten down ; and this beating is repeated from time to time as the mass sinks. By the process carried on at La Mothe- Jarry, the filling of a silo may extend over a fortnight, or a month if desired. Tou are almost inde- pendent of conditions of weather ; for, provided that the cutting and carting of the crop can be proceeded with, the filling may be carried on without any inconvenience. Since the above was written the necessity for the portable Filling the Silo. 119 railway and baskets lias been in great measure done away witli by the invention of cliafE- cutters made by M. Albaret, of 63, Boulevard de Strasbourg, Paris, wliicli propel the chopped forage a long distance into tbe silo. Bnglisb machines for effecting a similar purpose, but differing in mode of operation, ■a,re made by Messrs. Bust, of Winterton, Lincolnshire, and Messrs. Benthall, of Maldon, Essex. Among the most noticeable instances recorded of extension of the filling process over long periods is one narrated in the American Cultivator by Mr. Gilbert Morton, who says that he took twenty-one days in filling his silo, containing 70 tons ; and he adds that " This shows that if we can take care to keep the corners and sides well trodden, we can take our own time in filling." There are, however, many other cases mentioned of much longer time being taken than some persons in this country think permissible. The following are u few quotations from the reports made to the U.S. Depart- ment of Agriculture : Mr. Otis Bisbee, Poughkeepsie, New York. — " It is expedient, wlien nearly full, to alternate, so as to give time to settle. A covering of six inches wiU control the surface heat. When packing, we tread it aU we can, but depend more on the natural settling." Mr. J. B. Brown, New York. — " Not important to be in a hurry when filling silo, except to save cost ; if trampled every morning it will not heat sufficiently to injure it, even if the process of filling consume a month, with interval of days." Mr. J. Winslow Jones, Portland, Maine. — " I think it best to be three or four weeks in filling a silo, or even longer, if it is 20ft. or 25ft. high. If you are filling several, fill a foot or so a day ; and if a day intervenes it is all the same. The fodder should be kept level and trod very hard, and every morning, before any new is put in, it should be thoroughly trodden." Mr. Jacob Pugsley, Wassaic, New York. — " No harm seems to ensue if silo is two weeks or more in filling, providing ensilage is well trodden and packed as put in.'' Mr. W. M. Vilas, Burlington, Vermont. — " It is important to have the fodder spread evenly and well packed as it is put in ; 6in. to 1ft. in depth put in each day will do." It need hardly be stated, that the weights are not put on at night and taken off in the morning, as some of our experi- menters consider to be so essential. 120 Silos for Fodder Crops. When, tlirougli delay in tlie filling, tlie surface of the fodder in the pit shows symptoms of dryness, some American writers advise that it be sprinkled with water by means of a garden watering-pot ; and thus they seem to be adopting the German practice described in the "Journal of the Highland and Agri- cultural Society ' ' nearly half a century ago . It is not advisable, however, that the water should be applied too copiously, as it would run through to the bottom instead of remaining where it is wanted. A slight sprinkling, repeated several times at short intervals, would be much better than putting on the same quantity of water all at once. Mr. G. Fry, of Chobham, Surrey, whom we have quoted at considerable length at page 349, although an advocate of slow filling, would be very unlikely to adopt such a practice as watering the fodder to keep down the heat, as he is in favour of a development of active fermentation by reduction of moisture. But such a process as he recommends could hardly be carried out in wet weather, when the advantage of the silo is greatest ; and when it can be carried out, it is questionable whether it is likely to prove more beneficial than the course generally adopted. We shall therefore have some observations to make on this point in Chapter IX., with respect to "Losses by Fermentation" (page 149). In concluding these remarks on slow v. quick filling, we may say that, where it can be conveniently carried out, we should prefer to adopt the slow process ; and we certainly should not go to the trouble and expense of lifting on and lifting off so many tons of weights night and morning. There is one inconvenience, however, with regard to slow filling, and that is, that it would be very troublesome for the owner of a single silo of limited dimensions to cut and put in a small quantity of grass day by day, and thus tediously spin out the process. Under such circumstances he can scarcely do better than fill the pit at once, and put on the weights, and at some convenient time afterwards, when the mass has well settled down, lift off the weights and boards, and fill up again to the brim. Filling the Silo. 121 "CUEBS" OR " SuPEE-SlLOS." To facilitate tlie filling of tlie pit, or rather to avoid tlie trouble of refilling, some American siloers make use of a wooden superstructure, which they call a "curb" or "kerb," by means of which they fill in the fodder for some feet above the height of the regular walls, and when the mass has sunk down sufficiently this temporary portion is removed. In many cases, although the silos have the lower part of the walls built of concrete or stone, there is only a thin boarding on the top, evidently to answer a similar purpose, i. e., to obtain a complete filling of the solid portion of the structure. In the oflBcial report of the Department of Agriculture, it is stated that " a temporary curb is sometimes added to the silo proper, so that the latter may be full when the settling ceases ; " and in the individual returns we find the curb mentioned as being 3ft., 4ft., and even 6ft. in height. Mr. Kenyon was one of the earliest to adopt a similar' method in this country; for he says (page 309), in his account of his experiments of 1881, that "by fixing up a sort of movable frame of planks around the top of and flush with the brickwork, we were able to cram in seven loads more grass." Mr. Swan (p. 292) used his floor-boards for a like purpose ; and Mr. Solomon (p. 285) employed some deals in a similar way with his earthen pit. At Merton it was one of the improvements adopted last season, and Mr. Woods thus de- scribes it in his South Kensington lecture: "This contrivance is what I may describe as a small super-silo, — an oblong two- inch deal box, without bottom or lid, about 30 inches in depth; the sides and ends, which are separate and apart, being brought together and affixed by ordinary bolts and clamps to the wooden coping and walls of the silo proper, and the sides strengthened against lateral pressure by a few iron struts." Mr. Grant (p. 227) attains the same end in a different fashion, for he piles up his blocks of concrete on the walls, thus adding 3ft. to the height of his silo ; and, as the mass sinks he rolls the blocks over upon the boards. 122 Silos for Fodder Crops. The Use of Salt. Salt has often been recommended as a preservative of tlie crops put into the silo, and some persons have used it iu inordinate quantities. But if the ensilage process is properly carried out, and the fodder in a sound state, salt is needless for preservation ; and, on the other hand, if these conditions are not complied with, salt alone will not suffice to remedy the defect. M. Goffart's opinion, in answer to the question, "Is it necessary to make use of salt in a silo V was given as fol- lows : " You can do without it. I often dispense with it myself, without good conservation being interfered with ; but I think the moderate use of salt is favourable to the health of the animals, and I sometimes mix some with my fodder at the rate 2-|-lb. to 31b. to a ton, so that the animals may get loz. to l^oz. in their daily ration of food." M. Lecouteux says, " I no longer employ salt, experience having demonstrated that it is not required in order to obtaia good fermentation." And Dr. Thurber says that in America the use of salt is generally abandoned. In Lord Walsingham^'s first ensilage experiment (page 260) not only was salt mixed with the fodder at the rate of lib. to the cwt., but a layer of salt one inch in thickness was spread over the surface before covering up the mass. When the silo was opened, instead of the herbage being well preserved, it was rotten for a depth of four or five inches. This unsatisfactory result was thought to be due to the grass and clover having been pitted when wet with rain. But grass and clover have been put into the silo elsewhere when saturated with rain, and yet have kept well ; and the probability is that the bad result in this case was due to the layer of salt. This would at once destroy all vitality in the herbage, and make it an im- penetrable mass, through which the air within could find no exit, and, being thus shut inside, it would produce decay. In the second experiment (p. 261) the quantity of salt mingled with the fodder was raised to 21b. a cwt. The silage was good, not because of the large quantity of salt— for excellent Filling the Silo. 123 preservation lias been obtained without any salt whatever — but probably because a large admixture of salt, when evenly scattered throughout the mass, is far less detrimental than a similar quantity placed in one layer upon the surface. It will be seen above that M. Goffart considers from loz. to 1 Joz. a sufficient amount of salt in a day's ration of silage, of which he gives to his cows from 601b. to 701b. per diem. In similar quantities containing the proportion of salt above mentioned (21b. to the cwt.) the animals would receive a pound or more of the condiment. It is not surprising that the effect of this is not always beneficial, especially with dairy stock ; for, although small quantities of such provender, when mingled with an abundance of other food, might be used without deleterious effects, a large supply of the silage would have a tendency to dry up the milk and cause a falling off in the condition of the animals. Lord ToUemache found (p. 248) that, with 301b. of silage, containing this proportion of salt, the milk diminished considerably, and he accordingly reduced the quantity one half, when the milk increased again. In Lord Fortescue's experiments (p. 240) the salt added was only about lib. per cwt., or half that previously mentioned, yet the animals that received 501b. of silage a day lost condition and fell off in the milk supply, although those which received two-thirds of that weight did well. When one considers that the silage is, as a rule, three- fourths water, one may see that the addition of 21b. of salt to the cwt. would produce provender that would be something like a mixture of 281b. of well-salted hay with about eight gallons of a liquid nearly as salt as sea-water, though not exactly the same in all its ingredients. We are glad to find that, among the recent modifications in the Merton practice, mentioned by Mr H. Woods in his South Kensington lecture, is the reduction of salt. He said: " Another alteration, and also an undoubted improvement, is a reduction in the allowance of salt ; a matter in which I believe mistakes to have been made. After careful observation I am not prepared to concur with those who would dispense K 2 124 Silos for Fodder Crops. altogetlier with the use of salt ; but, so far as I am at present able to judge, the proportion should be about fib. and in no case more than lib. to every cwt. of the fodder." But even this quantity would be too much where the silage is used very freely; and it will be seen on page 160c that M. Niviere gave as much as 1301b. a day to beasts he began to fatten. We prefer the practice of those who give the silage unsalted, and place in the manger a lump of rock-salt, which the animal can lick at discretion. By so doing, they spare themselves the trouble of mixing when the silo is being filled, and give the animal the opportunity of stopping the salt without stopping the food. Such is the practice of men of experience, as will be seen by reference to the letter of Mr. Grant (p. 228) ; while Mr Kenyon (p. 312) writes : Witli respect to salt, a good deal of misapprehension seems to exist. Its liberal use is evidently regarded by some as indispensable to the pro- duction of good ensilage. I held much the same opinion three years ago, but it has been dispelled by experience. I should say that if this sub- stance exerts any influence at aU on the process, it is certainly not a beneficial one. As a condiment or a corrective I believe it is a good thing for stock, but I prefer to give it them separately, in the form of rock-salt, which they can lick or not, as their tastes or instincts prompt them. In 1881 I mixed a considerable quantity of salt with the grass as it was thrown into the silo ; in 1882 I only did so with about half of the ensilage ; and last year I discarded it altogether. If the quality of my ensilage is no better in consequence, it has certainly suffered no deterio- ration by the omission. Trampling Down the Fodder. M. Goffart strongly advocates trampling down the fodder when filling the pit, yet says it is of less importance than efficient weighting. Some persons use horses or cattle for this purpose, or have carts or rollers drawn over the mass; but animals cannot tread close up to the walls, where the trampling is most needed. Mr. Woods (p. 261) recommends well ramming with wooden rammers — a method mentioned in the old German practice described at p. 10. CHAPTER VI.-COVERING AND CLOSING THE SILU. Some persons have advised that in packing the fodder in the pit, it should be piled up in the centre at the finish ; but the experience of M. Goffart is that such an arrangement is detrimental to good preservation, and he says on this point : The filling of the silo should be carried out in such a manner that the layer of fodder should always be horizontal. The trampling down along- side the walls (which ought to be as smooth as possible) is carried on whilst the silo is being filled. A person going constantly round as close as possible to the walls suffices for this operation. The topmost layer in the silo should be made perfectly flat, and not higher than the level of the wall. To ridge it up in the centre is a grave error ; the mass cannot be sufficiently compressed, and dry rot sets in, which is not long in communi- cating itself to the mass below. The filling having been completed, the covering up takes place. Some of the American farmers put nothing whatever between the boards and the fodder, thinking it unnecessary ; and such a course is preferable to the use of anything close and compact, which is likely to mat together and become impenetrable, because, with a layer of this kind, air is shut in which ought to be expelled. M. G-offart says : The most important question — and one without which there can be no good preservation — is the covering up of the sUos. A layer of dry straw, an inch or two in thickness, should be spread evenly over the green fodder ; this straw should be covered with boards, and, finally, upon these boards should be placed heavy materials to the extent of about 1001b. per square foot of surface. Thinnish boards, such as battens, suit better than thicker deals, because they give more to the inequalities of settlement, which are difficult to avoid. But better even than straw, in M. Goffart's opinion, are the. " needles " or leaves of pine-trees, where such can be obtained. In the forests in the Sologne district they are in great 126 Silos for Fodder Crops. abundance, and M. Goffart utilises them largely as bedding for bis stock, by which means he is enabled to chop up his straw and mix it with the cattle food. As to the use of these pine-needles for covering up the fodder, he says : The best covering consists of the newly -fallen needles from pine-trees : the great quantity of resin which they contain prevents their decomposing quickly, whilst soft straws, and especially after-maths (which are commonly employed) are rapidly softened and decomposed by the vapour which escapes from the lower layer of maize and converts it into a mere dung- heap. This mass becomes impermeable, and completely imprisons the vapour which, for want of an outlet, remains at the top of the layer of maize, and sets up the mouldiness which soon renders it unfit for feeding beasts. In short, make use of pine needles if you have them at your disposal ; if not, don't cut up the straw that you are about to employ, but use it whole, and choose in preference the hardest you can get, such as will the longest resist the action of moisture. Here rye straw stands in the first rank; next comes wheat straw, and then oat straw ; after-math grass should be utterly proscribed. Never lose sight of the fundamental principles which assure success in ensilage — continued pressure to expel all the air contained in the silo. This air, at the time when you have rapidly carried out the process of ensilage, represents at least one half of the cubic space occupied by the pitted fodder. Leave this air in contact with the material, and it wiU end in the whole mass undergoing serious damage. The vapour which escapes more or less freely from the pitted material, according to temperature of the latter — which is always disposed to rise a little at the upper part of the silo — is equally a cause of deterioration when the vapour is imprisoned. But, on the contrary, it is harmless when it finds an outlet among the stones and bricks which form the covering. Mr. Oakeley (p. 313) used a layer of heather between the grass and the boards, and others have also found it service- able. Gorse, fern, reeds, and various other matters may be employed for this purpose — hard, tough materials being better than soft. Some persons take a good deal of pains to make the surface impervious to air. In Mr. Stobart's silo strips of zinc were placed under the boards in order to close the crevices. Mr. H. Woods recommends (page 261) that a layer of bran be spread above the boards. This is a much better arrange- ment than putting it under them, for it will not shut in the Covering and Closing the Silo. 127 air to the same extent ; and it is far preferable to some other methods of excluding the air. Mr. Gibson uses cavings for the same purpose ; and both are better than sawdust, which others have made use of. Sand is objectionable from the probability of its running through crevices and getting mingled with the food. The CovEEma Boaeds. These are ordinarily boards of 1 |in. or 2in. in thickness ; if thicker they do not adapt themselves so well to any inequality in the packing. They should cross the narrow way of the silo, and be half an inch or an inch short, so as to sink freely down without any obstruction. The small amount of vacant space is not objectionable with heavy weights — indeed, it is an advantage rather than otherwise, as it permits the air to escape as the fodder settles down. For the same reason, it is not requisite that the boards should fit very closely together on the top. Some persons have had their boards tongued and accurately matched together, so as to form large sections several feet in width; but these are disadvantageous for several reasons. They are not so readily handled ; they do not accommodate themselves to any inequalities in the mass ; a larger portion of the surface has to be exposed in cutting out ; and, finally, although they may serve better to exclude air, they also are more effectual in keeping air in. Mr. M'Connel (page 323) used small pieces of board only about 40in. long and llin. wide, laid about half an inch apart to admit of the escape of air ; and he found these small boards, with iron weights on them, very handy. As M. Goffart says, when the silos are deep, the cost of the covering boards is not of much importance, but when they are shallow the cost per square foot should not be lost sight of. In Mr. Ford's estimate (page 221), the cost of 105 sq. ft. of Sin. battens is put down as II. 15s., or 4i. per square foot, which seems rather high. Those of Mr. Willan (page 235) cost a little more than M. per sq. ft. ; thinner boards would be cheaper, and some l^in. boards are spoken of as costing 128 Silos for Fodder Crops. id. per square foot ; but^ of course, price varies with the locality. Closing the DooEWAy. In silos that are wholly or partially above ground, there is usually a doorway. The closing of this is a matter that requires some degree of attention ; and the nearer the door is to the bottom of the silo the more carefully should it be attended to. M. Goffart experienced some trouble in this way, and made various changes with a view to get over the difficulty. He found that thin boards warped under the action of the damp, and let the air penetrate. He replaced them by small beams or bars of wood about 4in. square, made to fit closely, and to slide in vertical grooves placed. one on each side of the doorway. These bars did not warp and leave crevices between them as the boards were apt to do, but, by keeping their shape better, they shut out the air much more effectually, and the damage decreased accordingly. With his last silos, however, he adopted a still more certain method of excluding the air, viz., temporarily bricking up the door- way. He says : " I now close the entrance of my silos by means of temporary brickwork plastered inside with hydraulic mortar j and this wall is pulled down again at the time of opening the silo. This brickwork closes the opening much more effectually than the boards, whatever care may be taken to adjust them one upon another. Bach opening may be closed up by a bricklayer in the course of an hour or two." As previously stated, the doorway should be so placed as to cause the least possible exposure of the contents of the pit to the action of the air, and therefore it should be at the end or narrow way of the silo. The middle of the long wall would be the worst place, because, on cutting into the mass, it would be exposed on both sides. If made in the long wall, the best place would be at one corner. CHAPTER VII.-WEIGHTING THE SILO. This is a point on which M. Goffarfc insists as more essential than any other part of the process, and some of his American disciples far outdo their master, as they state that they put on four or five times as much weight as is recommended in the following extract, the italics of which are in the original : It is indispensable to put on the cover or movable planhs of the filled silo about lOOlb. per square foot of heavy matters, such as stones, &c. Here I come to the most important point — which I have had the most trouble in determining, and which I have only lately settled. When a sUo has just been Med, it is not merely necessary to exclude the outer air,, it is requisite in the first place to expel the mass of air which is shut up in it. This is the part which the heavy weights put upon the silos have to perform, and by means of which I attain the desired end. A layer of clay, which hermetically seals up the pit, is exactly opposed to this object. It is necessary that the air inclosed in the sUo should find means of escape between the planks above; it is necessary that great pressure should drive out the air as quickly as possible from the place where its presence would cause most serious mischief. This great pressure ought to continue for several months, because the trampling down at the time of ensilage, however thoroughly carried out, is not in itself sufficient. At the time when the green fodder is chopped up, it is still living, and endowed with such elasticity that it reacts strongly against the momentary pressure which you have put upon it. It is not the same, however, after a few weeks or a few months ; the fodder soon undergoes a softening which diminishes the elasticity, or, ui other words, increases its compressibility to a considerable extent. It is when these physical and chemical modifications are accomplished that the heavy weights, which I have indicated as an indispensable condi- tion to success, produce their salutary effect. They follow the fodder as it collapses, and produce that state of very high density which is necessary to put it beyond the reach of deterioration. Some American farmers, however, state that the juice of the maize has been squeezed out by 1001b. pressure; but it is not improbable that this result may have been due to the- 130 Silos for Fodder Crops. maize being in an exceptional condition. M. Goffart states that lie never found tlie juice of the maize squeezed out except in one instance ; then it had been left until too ripe, and had been exposed to rain and frost, and the juice ran out from the mere weight of the fodder, before any other pressure ■was put upon it. Mr. Bateman mentions (page 26) that his maize parted with its juice at a very low pressure ; but here, too, it had been affected by the weather. It seems pretty clear that, under certain circumstances, a breaking-down of the cellular tissue in plants occurs, and the juices thus escape much more readily than under normal con- ditions. Unless such be the case, it is difficult to account for the conflicting reports which occur as to the amount of weight used, and the effects produced. On the one hand we read accounts of comparatively light weights being put on, and the juices being squeezed out of the fodder ; in others several times as much weight is reported to have been used with bene- ficial effect. For example, Mr.v Eraser says (page 290) that he applied a pressure of " something like 5001b. per square foot," and attributes the good results to this heavy pressure. Somewhat similar statements appear in the American official report. Some men state that they used 3001b., 4001b., or 5001b. per square foot, but make no mention of juice being squeezed out; whereas another says: " We used 100 pounds per square foot (too much) ; floor of silo covered with expressed juices of forage." The fact should not be overlooked that the weight which is put on the top of the mass is but small in comparison with the pressure upon the fodder at the bottom of the pit — from which the juice would be most likely to be driven out, if driven out at all ; and an increase of a yard in the depth of the silo would have greater effect on the pressure at the bottom than a difference of 1001b. per square foot in the weight upon the top. In many American silos the depth is 20ft. or more, some being as much as 25ft. In such a case the pressure at the bottom, from the superincumbent mass, would be at the rate of about half a ton to the square Weighting the Silo. 131 foot J without tte addition of any weiglit upon tlie surface. The surface pressure is chiefly requisite for the purpose of keeping the top layer in sound oonditionj and thus preventing deterioration from being conducted from the surface down- wards ; and in shallow pits it is of much more importance than in deep silos, where the great bulk of the silage is kept in good condition by its own specific gravity. In some of the instances where there has been much liquid found in the silo, it has probably been due in great measure to the wetness of the fodder when put into the pit. From Mr. Stobart's silo 50 or 60 gallons of liquid were drawn off ; and it appears from the report (page 298) that " the pit had been filled regardless of weather, and it rained during the whole of the three days the men were at work." But in some instances, with underground silos, the supposed expression of juices has been imaginary. In one case in America, where the bottom of the pit was thought to be swimming with the juice of the fodder, the liquid was found to be due to a leakage of water which ruined four or five tons of the silage. Dr. J. T. Smith, at the Chicago Congress, said, "There is more trouble in keeping water out of these underground pits than there is from the water getting away from the corn fodder." M. Goffart says (p. 108) that he had a lot of silage spoilt by a crevice letting in water. An instance of such leakage is related by the Eev. C. H. Ford at page 223 ; and we think it very likely that various complaints of juice in the pits have had their origin in unobserved crevices, for liquid seems to be more prevalent in underground silos than in those that are above ground. In some instances, where there has been much liquid in the pit, it has been found convenient to have a tap to draw away the hquor, as mentioned by Mr. Easdale (p. 207). In one of Mr. Oakeley's silos (p. 313) some liquid was also drawn off; but in other cases, where there have been taps, there has been found none to remove. Mr. Grant shows (p. 230) his arrange- ment for collecting the ooze in the pit, so as not to incon- venience the men when cutting out the fodder. Where there 132 Silos for Fodder Crops. are taps, our impression is that it is best not to draw off the liquid till the cutting out takes place ; but this is a matter that can only be definitely settled by further experience. Cost op Weighting Appaeatus. A considerable item of cost will be weights, if they are pur- chased. In the estimate of Mr. Ford's silo (page 221) it will be seen that concrete blocks' for weighting form about one- fourth of the whole outlay, and the tackle to facilitate the moving of them costs nearly half as much as the blocks. In none of the American estimates do we find any mention of expenditure in this respect. Anything available is turned to account — blocks of stone, barrels of earth, sacks of grain, casks of cider, logs of firewood, kegs of water — in short, any heavy stuff that may be upon the farm. Barrels form a favourite vehicle for the weight, all sorts of substances being packed therein ; and as they can be readily rolled about, and whipped up by means of slings or falls, with a horse to pull a rope running over a block, the process of loading is quickly accomplished. On this subject M. Goffart says : When silos are of great depth, the cost of planks is not very important; bnt when the silos are shallow, the price per square foot should not be lost sight of, for it may become a rather heavy item. At all events, it would be a matter of importance to get rid of it, and I am going to try some experiments for this purpose. I shall dispense with planks in one of my silos, and shall merely place some well-burnt bricks upon the bed of straw, so as to form a compact layer of sufficient height to give the weight of about one hundredweight per square foot. My silos have a surface of SOO square feet, and my bricks weigh about 61b. each, there- fore 10,000 bricks will be required for each silo. The bricks would cost some 8Z. or more, but would have the same value after as before the temporary use to which they are put. Bricks in any case will be better to handle than lumps of stoue, the irregularities of which make the work painful and slow. Of course it will be requisite to have well-burnt bricks, so that there should be no fear of breaking. If I had silos in England or Belgium, where pig-iron can be obtained for about 40s. a ton, I would not hesitate to get blocks cast of such shape that they would lie sufficiently close together. To be convenient for lifting, they might be about Sin. thick, and oast with a handle, as in the large weights used with scales. In this way a very useful method of rapid shifting might be obtained. Weighting the Silo. 133 I need not say that weights once lifted to the top of the silo ought not to be taken down : they should be placed on the surrounding walls. Those who have stone-quarries near at hand would probably have the opportunity of buying rough-hewn stones, with an even surface, and lOin. or 12in. thick. Supposing they have a mean density of 1001b. to 1201b. per square foot, a single layer would give sufficient pressure. Old paving stones might, in certain cases, be used advantageously, especially when they are nearly cubical in shape. I intend to employ three different modes of covering my silos — (1). Rubble stones with old rick cloth put under them, so as to prevent the stones getting mixed with the fodder. (2). Bricks without boards. (3). Placing upon boards the sacks of phosphate intended for my manure heaps. But, as with everything else, advantage should be taken of local resources, whatever may be most economical, but without losing sight of other conditions of good service, for nothing would be moi-e dangerous than a mistaken economy with regard to means of compression. Mr. Stobart (as will be seen by Mr. Basdale's letter on page 207) has adopted blocks of pig iron as vreigMs ; and others have followed his example. Mr. Easdale stated in the Field that these blocks are cast to a model made with a view of their being convenient for lifting, and have clip-holes for grapples to lay hold of. They are 18in. long, 5in. wide, and 4|in. deep, and each block weighs as nearly as possible Icwt. A single layer of blocks placed closely side by side gives a pressure of l^cwt. per square foot. They were delivered at Cowton station at 45s. per ton ; but since then, the price of iron having fallen, they have been obtainable at 39s. per ton, to which, of course, carriage would have to be added. The Duke of Hamilton (page 271) adopted bricks for weighting purposes, at a cost of 50s. per thousand, or I7s. per ton, a thousand weighing about three tons. Mr. Grant (p. 228) and others use blocks of concrete ; while others, again, have square boxes filled with clay or pebbles. Many persons are naturally anxious to avoid tLe trouble and labour consequent on the use of heavy weights ; but the difficulty has generally been to find anything that will answer as Well, and with as small an amount of attention. Com- missioner Loring's American report says, pithily : " Screws are used by some instead of weights. The objection to them is that they are not self-acting, like gravity." Consequently, 134 Silos for Fodder Crops. if they are not watched, and screwed down from time to time, the pressure may be lost as the fodder sinks, and the air will get in and produce mischief. Mechanical contrivances will answer, beyond doubt, if they are properly attended to ; for we have seen several excellent saijiples of silage pressed by their means. Nevertheless, we think it more than probable that the majority of farmers, and the men in their employ, will not attend to all the details with the same amount of care as the inventors of the various kinds of apparatus ; and machinery of this kind has yet to pass through the ordeal of ordinary farm practice before it can be said that it fully answers the purpose for which it is designed. It will be well for persons who are thinking of investing in one or other of the various methods for pressing siloed crops, to consider whether they are prepared to give the apparatus the amount of attention necessary to ensure success. If they are, they may find their investment profitable in the end, because it will save labour ; but if they think of adopting the machinery with the idea that it will save them personal trouble, they possibly may find themselves mistaken. The crops that are put into the silo do not behave exactly alike in all instances ; not only are there different kinds of crops, but the same crops vary in condition, owing to the state of the weather and other causes. Goffart has pointed out that, in the spring, when the temperature rises, fermentation at times sets in with great energy, and the mass of silage sinks con- siderably. We have known a similar thing to occur, where some grass, rather heavily weighted, had for a long while shown no indication of settling down further than it had done in the first week or two after being pitted ; but, on a rise in temperature, a further considerable shrinkage ensued, and the weights naturally sank down as the mass subsided. If, how- ever, a similar thing should happen in a silo with mechanical pressure, it is not improbable that such a shrinkage might occur without attracting attention, and the silage be left without any surface pressure. The advantage of dead weights in cases of this kind is unquestionable, as they are always in operation. Weighting the Silo. 135 However^ as before stated^ mechanioal appliances can be made to answer well if they are properly looked after. One of the methods which has given very successful results is that invented by Mr. Johnson^ of Croft, and described with illus- trations at page 210. That process is not patented. Another, which also answered well, is one patented by Mr. Potter, clerk of works to Lord Ashburton, and manufactured Potter's Compbessino Appaeatus with Htdeatjlic Jack. hj Messrs. Reynolds and Co. of Edward-street, Blackfriars- road, London. It is shown in the above woodcut, and was applied to Lord Ashburton's silos depicted at page 59. The following description of the appliances is given in the " Journal of the Bath and West of England Society." In the walls of the silo, near the angles of each compartment were built channel iron standards, each having a powerful claw at bottom going- through the wall. Every 6 inches apart in the height, projecting " fangs" were riveted to the standards, each capable of resisting a force of 136 Silos for Fodder Crops. six tons ; tlie fangs were not allowed to project beyond the face of the wall. A hydraulic jack was provided with a foot at the bottom that would pass under any of the fangs as required, and the ensilage materials being ready for pressing, the whole area of the silo was covered with 9in. by 3in. plants, leaving a space of about Jin. between them for air to be expelled, and being also about \\n. short that they might not pinch the walls. Across these planks were laid two others, llin. wide and 7in. thick, their ends abutting against the channel-iron standards. The jack being placed on one of the ends of these transverse timbers, with the foot placed under one of the fangs (the latter being the point of resistance) the pressure was applied with the jack handle, and the contents of the silo were rapidly depressed. When no more depression seemed obtainable, a wrALL A ^«i4^ CHANNEL IRON wedge was put into the place occupied by the foot of the jack, and the jack then withdrawn and shifted to the opposite standard, and so on, tiU the four had been acted upon. The operation was repeated each succeeding morning for about a week after the last batch of ensilage materials had been deposited, when further compression appeared to have no effect ; but at later dates the pressure has been occasionally applied and the ensilage put still closer together. The jack was tested to 4 tons ; the total compressive force was therefore not less than 16 and probably nearer 20 tons, or 3001b. per superficial foot. To apply the full force at the four points of the silo, or compartment, occupied one man ten minutes, and to release the pressure and remove the ■cover planks required two men a somewhat less time. The channel irons can either be applied to the surface of the walls of existing silos, as shown at c c on the previous page, or let into the wall as represented in the woodcuts above. The cost of the apparatus is stated at page 96. Messrs. Reynolds and Co. are also the manufacturers of another method of applying pressure in silos. The following woodcut, and the accompanying particulars from a circular issued by the firm, will give a good idea of the nature of Weighting the Silo. 137 the appliances^ wliicli consist of chains, rollers, and screw apparatus for tightening the chains. A chain is attaclied to the lower part of the wall of the silo, in any suitable manner, either by taking it through the wall with a plate and bolt on the outside, by weighting it in the ground with concrete, or attaching it to a, beam ; and on the opposite side of the silo a similar chain is attached. While the silo is being filled, the ends of these chains **( \xT^^ Eeynolds's Compressing Apparatus with Chains and Screw. are thrown over the wall or hung on spikes on the sides. After the material is put in the pit covering boards are placed over it, and a stout tranverse beam is laid on the top, stretching from side to side of the silo. In the ends of this beam brackets are fixed to carry movable rollers, over which the ends of the chains from either side are led. The chain- tightener is hooked into the links, and on turning the handle of the screw the ends of the chain are drawn closer together, causing the beam and covering of the silo to sink, and so to press the material. Pins are then inserted in a link of each chain to hold the beam down, when the screw- 138 Silos for Fodder Crops. tightener can be made to take a fresh hold on the chain for further pressure, or be removed altogether. Any number of beams may be used, according to the length of the pit and the pressure required per square foot of surface ; but the chain tightener and pair of rollers are removed from beam to beam, so that only one set of these is sufficient for any number of silos. The chain-stretcher and pulleys together cost 51., and the expense of the remainder of the appliances would depend upon the number of the beams required and the length of the chains. For a silo 60ft. long by 12ft. wide and 12ft. deep, Messrs. Reynolds state that, to produce a pressure of 2001b. per square foot, eight beams would be required, and the cost of the 320ft. of chain and other appliances to work them would come to 24Z., thus bringing up the total for 720 square feet of surface to 29Z. If the silo were half the length, the cost of chains, &c., would be reduced accordingly; but the 51. for the screw apparatus would remain as before. This does not include the cost of the covering boards, which would be the same as in any other silo of the same dimensions ; but the beams would be an extra outlay. Mr. Stocks' mode of applying pressure is described at page 77. The press and springs can be applied to a silo 20ft. by 10ft. for 181. Messrs. Pearson and Co. give the cost of their arrangement of continuous pressure, shown at page 73, as 181. for a travelling crane for 60ft. by 12ft., and 12s. per ton for concrete blocks; or at the rate of 21. 10s. per 100 sq. ft. of surface, with a pressure of Icwt. to the sq. ft. Their arrange- ment for mechanical pressure, shown at page 85, costs for four sets of winders, &c., for a stack 18ft. by 10ft., 8Z., or at the rate of 41. 10s. per 100 sq. ft. A method of using ordinary screws and nuts, as adopted by Mr. J. Mead, is represented at page 243. The suggestions that have been made for applying pressure to silos are so numerous as to defy description. They would almost fill a volume in themselves. Many are evidently impracticable, and of others it is not desirable to say anything until they have been submitted to the test of practice. CHAPTER VIII.-OPENING THE SILO. On the door being opened, as little as possible of tbe silage sbould be uncovered^ only a sufficient number of boards being removed to give room for the operation of cutting to be per- formed. It is usually cut in vertical sections, as is done in a haystack, as much being taken out each day as is required for the day's consumption. The weights should not be removed from the uncut portion until absolutely required for the work to be done, as pressure is even more necessary -after the opening than before. When weight was deficient M. Groffart found the ensilage deteriorate very rapidly after opening ; and one of the American farmers, in reporting to "the Board of Agriculture, says : " In opening our silos we took all the stones off ; this was a mistake, as we lost about a ton apparently from the want of sufficient pressure to exclude the air." Another American farmer adopted a much wiser •course when, instead of removing the weights altogether, he shifted the weights from the boards to be lifted and piled them on the others not yet wanting removal, thus increasing the pressure during the opening ; and he says that the ensilage taken out last was better than that taken out first. Where the weights are removed and the silage taken from the surface alone (as is done in some silos that have no door in the wall), the danger is much less than when all pressure is taken ofE and the mass cut vertically from an open door. Such a course has been adopted by some American farmers, and by a few in this country. But it should only be done where the silo is small and deep, with a quick consumption, so that the entire surface can be quickly cleared off. In a broad and shallow silo, with slow consumption, it would be very impolitic to attempt this method. L 2 140 Silos for Fodder Crops. In hot weather there is greater liability to deterioration: than in the winter months, and the heat affects silos abov& ground more than those which are below. For this reason M. Goffart, although he acknowledges the advantages of above-ground silos, recomniends that silos be built half underground, and he adopts the practice of cutting from the top down to the ground level in cold weather, and leaving untouched for the hotter season the lower portion, as shown in the illustration on page 53. One of the American farmers recommends, for the purpose- of facilitating the cutting out the upper half of the contents of the pit, that a layer of boards be placed in the middle of the fodder while it is being packed. There can be Uttle objection to this course ; but much the same advantage would apparently be obtained by taking the boards removed from the top and placing them underfoot, when the cutting has descended to the required distance. The settlement would probably be more regular, and the expense of a double set of boards would be avoided. Another American farmer makes the following suggestion with respect to the emptying of the silo : " Let me suggest a convenience for those whose pits are partially below the surface of the ground at the lower door. My own silo is 5ft. below the surface at this entrance, and I have therefore made a set of trestles, with legs 5ft. in height ; after the first section of ensilage has been cut back from the door, two trestles are put in, and the planks previously removed from the top of that section are placed upon the trestles, thus forming a false floor, on which a cart or the mixing trough can be run in from the level of the ground. After the removal of another section of ensilage, a second pair of trestles is placed in position, and the floor continued, and thus on to the back of the silo ; so that a cart can be backed in to the very rear as conveniently as though the bottom of the silo was on a level with the ground." €HAPTER IX.-EFFECT OF ENSILAGE ON FODDERS. The effect wMcli ensilage will produce on the fodders put into the pit will mainly depend upon the manner in which the process is carried out. Undoubtedly there may be a very ^reat deal of waste if the work is badly done ; and it is not surprising that persons who have seen the bad results^ and not the good, should utter words of warning or condemnation. Fermentation can be no more carried on without consuming «ome of the material fermented^ than a fire can be made to burn without consumption of the fuel by which it is fed. In both cases combustion is going on, and the more abundant the supply of oxygen the more rapidly the burning proceeds. If you stop the draught, a fire will languish and die out ; and a similar result is produced in the silo if you lessen the supply of air by the imposition of heavy weights. Many persons seem to think that the course most requisite for the conservation of the fodder is to make the top of the silo air-tight. But exclusion of air from without is of less imme- diate importance than expulsion of the air which is within j and if the top of the silo be hermetically sealed as soon as the fodder is pitted, more harm than good will be done, as air win be shut in that ought to be allowed to escape. When the crop is first put into the pit, more than half the space occupied is filled by air ; and if the fodder is to be maintained in good condition, this should be driven out as well as kept out; for, unless such is done, a process of slow combustion will go on,- which will attack first the most nutritious ingredients of the plant;, and, unless checked, will end by destroying the mass so far as its feeding value is concerned. Heavy weights effect the double purpose of driving out air and keeping it out; 142 Silos for Fodder Crops. whereas hermetically sealing the top of the pit^ even if it catt be done, only effects one purpose, and that the least important.. In his early experiments M. Groffart closed the top of his silos. with clay, and he thus relates the consequences : Having successively filled my silos, and had the layers trodden down by persons dancing on them with very great energy, I placed on the surface a layer of straw chaff about four inches in thickness, and on that a layer of adhesive clay carefully beaten down, so as to prevent any communica- tion between the ensilage and the outer air. During the next few days, I closed, every morning, any cracks that were to be found in the covering. When, at the end of a few weeks, I proceeded to open a sUo thus treated, I invariably found a space of an inch or two between the silage and the clay covering. No matter how forcibly the maize had been rammed down, there had been a further settlement, and the upper portion had undergone deterioration which would rapidly be communicated to the layers beneath. To prevent such a result, I had no other course but to get my silage consumed as quickly as possible. Subsequently I abandoned the clay as a covering for my sUos. Imme- diately after treading down my mixture of maize and chopped straw, I placed over aU. a cover made of oak, exactly shaped to fit the sUo, and descending with the fodder as this settled down. This simple change produced a decided improvement, though still insufficient — ^the mischief was only deferred for a while ; but I was upon the right road. Nowadays I stiU make use of the same silos, and I obtain complete preservation for an indefinite period of time. The chief point of difference is this : I place upon the cover of my silo, as soon as it is filled, about a hundredweight of stones, &c., for each square foot of surface. That fermentation can be checked by heavy weights on the fodder is proved by experiment. It is a common thing for silage to have an alcoholic or an acid smell when first taken out of the pit. If the alcoholic flavour is very marked, there has been more fermentation, and consequently waste, than is desirable ; if there is strong acidity, matters are worse still. That such results may be prevented by due care is shown, by M. Goffart's experience : In AprU, 1877, 1 opened my last elliptical sUo, which contained nearly 100 tons of maize pitted in October, 1876 — i.e., more than seven months, before. The whole presented itself as a most compact mass of a brownish, green tint; the temperature did not exceed 10° 0. (S0° Pahr.), and therfr was no appreciable odour ; on being put to the mouth, the maize at that instant was quite tasteless, and the absence of smell and taste produced at first an almost unpleasant sensation. Effeat of Ensilage on Fodders. 143 I took out from the mass a few hundredweights for the next day's rations of my beasts ; and scarcely was the maize exposed to contact with the air when it underwent a veritable metamorphosis ; the brownish colour became sensibly greener, and a commencement of alcoholic fermentation was soon produced, without going beyond the limits which that fermen- tation ought never to exceed. This silo was not completely exhausted till the 10th of August, and the maize remained in good condition to the last day. It must not be inferred, however, that M. Goffart objects to fermentation under all circumstances. His object is to prevent it in the silo, but to permit it in the silage when taken out of the pit for the beasts. Within certain limits he considers the fermentation of the fodder to be beneficial ; beyond those limits it is wasteful, and may become positively injurious. How he regulates the fermentation is to open the mass of silage taken from the pit, mix it with the chaff or other food to be given with it, and let it lie until it has heated sufficiently. In warm weather twelve hours may suffice, and in cold weather twice as long may be necessary. In one exceptional instance, where the fodder had been frost-bitten before being put into the silo, fermentation did not set in for two or three days. With respect to the effect of leaving it to the second day under ordinary circumstances M. Goffart makes these remarks : I have said elsewhere that the fodder taken out of the mass ought, before being given to the animals, to be exposed to the action of the air for fifteen or twenty hours, in order to set up alcoholic fermentation. After that time (which may, however, be lengthened or shortened some- what, according as the external temperature is high or low) the fermenta- tion becomes excessive, and therefore harmful ; the spontaneous heating produced in the stuff when it ceases to be compact ought never, if possible, be allowed to exceed 35° to 40° C. (96° to 104° Fahr.). Two years ago I had no silos on my farm at Gouillon, and on alternate days I had the silage taken from my silos at Burtin to feed the cattle on the other farm. On the second day the heat of the silage thus carried greatly exceeded the limits that I have just laid down, and the alcoholic vapours came off so abundantly as to show the serious loss which was going on. Acetic acid, too, was not long in also showing itseM. In the North of France the beetroot pulp given to cattle in winter is sometimes very acid; and it is to 'this circumstance that I attribute the poor quality of milk and butter obtained from animals fed upon this food. 144 Silos for Fodder Crops. Losses by Peementation in the Pit. In the autumn of 1882 two celebrated scientific authorities on agriculture expressed opinions that were pretty strongly adverse to the ensilage process ; and for so doing they were rather sharply attacked by enthusiasts in its favour. Those scientific opinions may have been originally founded, in some measurOj on defective samples of silage, but it would be wrong to assume that there was no ground for the notes of warning that were uttered. Instances of serious loss, such as were set forth by Sir J. B. Lawes and Dr. Voelcker, undoubtedly have occurred, though their occurrence may not be a necessary consequence of the process. The endeavour should be to avoid such loss by following the best line of procedure, and not court disaster by setting to work in full faith that pre- cautions are needless, and that everything must come right. Here is a portion of a letter by Sir J. B. Lawes, which appeared in the Times of Oct. 26, 1882 : About a year and a half ago I received a bulky volume on the subject of ensilage from the United States. The writer, who was most enthusiastic with regard to the system — which he said would create a revolution in the agriculture of the country — furnished some important statistics respecting the loss which took place in the silo. Indian corn was the substance used, which, according to the author, when put into the silo contained 5 per cent, of ash, as calculated on the dry state ; while the ensilage when taken out contained 9 per cent, of ash, calculated also on the dry state. If this destruction of the vegetable matter, which amounts to about 40 per cent., extended equally over the whole crop, it would be serious enough ; but unfortunately it is the substances which possess the highest feeding value that are the most easily destroyed. The heat generated, and the smell of alcohol and acetic acid, to which the author also alludes, can have had no other source than the sugar which is found so abundantly in Indian com at the time of blooming. Last year I wrote some articles on the subject of ensilage, which were published in the United States, and I then pointed out how serious was the loss of the nutritious portion of the plant which appeared to take place in the silo. I concluded by remarking that although, under the conditions of agriculture that prevailed in the States, ensilage might he profitably used, stiU I hardly thought that British farmers, who had to produce the food for their stock at a great cost, could afford to adopt a system which apparently destroyed so large a proportion of the nutritious matter. Effect of Ensilage on Fodders. 145 It is beyond question that there is a loss of some of the most nutritious parts of the plant when alcohol and acetic acid are formed by fermentation ; and it is beyond question, also, that in some specimens of silage these products have been iound in great abundance. But it does not follow, because such facts are stated, that the loss of which these are indi- cations are directly visible, or that the writer means it to be understood that that portion of the provender which remains in the pit cannot be eaten. The food may be readily consumed by the cattle, and may be nutritious also ; but it will not contain all the nutriment that might have been there had the process been more skilfully carried out; and so far as this loss is allowed to go on, so far will it impair the economy of the process. Such a loss, however, as Sir John Lawes quotes (40 per cent.) is so enormous that the idea of some error naturally suggests itself ; and, in an estimate founded solely on the increased quantity of ash, there is a possibility of error, seeing that the accidental admixture of a small quantity of earth with the sample of fodder taken from the pit would materially alter the proportion in the analysis ; or an addition of salt to the fodder put in the pit would considerably change the basis of compai'ison. Nevertheless there are instances on record in which care- fully-conducted investigations have shown the loss sustained to be even greater than that mentioned by Sir John Lawes. At page 186, in the chapter on the Chemistry of Ensilage by Mr. Woodland Toms, will be found a table giving the results of ten experiments in which the amount of loss averaged 34 per cent, on the solid mattbr of the fodder put into the pit, and in one case, where a bad system of procedure was carried out, as much as 54 per cent, was lost. This, however, occurred with beetroot refuse from sugar works, in which the fermentation is likely to be much more destructive than with our ordinary fodder crops. In the case alluded to by Sir John Lawes, the crop was maize, in which, owing to the quantity of sugar in the plant, there may also occur a considerable amount of loss from 146 Silos for Fodder Crops. excessive fermentation when the process is badly carried out. Some instances of such having been found to be the case are particularised in a table by Professor Moser quoted on page 180. Here several weighed bundles of maize (samples of which were analysed) were inserted at different depths in a mass of similar maize buried in a trench dug in the ground. On the trench being opened, the bundles were again weighed and analysed, so as to ascertain the exact amount of loss in each of the different constituents of the fodder. The total reduction of weight in that bundle which had been placed lowest in the trench was 40 per cent., and in that which was uppermost the weight was reduced 65 per cent. ; but th& greater portion of this loss was water, which doubtless had been absorbed into the soil. Of solid substance the loss was not so great as in that stated by Sir John Lawes, being 28 per cent, in the upper layer and 35 per cent, in the lower; hence that which was reduced most in total weight lost least in solid substance. To show how this loss was distributed, we will re-arrange the figures of the table, turning them into tons and hundredweights, on the supposition that each masa consisted of 60 tons instead of 6000 grammes. Fresh Maize. Siloed Maize taken out (17 inches deep). Siloed Maize taken out (84 inches deep). Weight. Weight. Leas. Weight. Loss. Albumenoids Fatty matters Soluble carbohydrates Fibre Ash and sand T. cwt 11 9 6 10 4 18 T. owt. T. cwt 8 or 3 8 „ 1 3 10 „ 3 3 17 „ 3 16 „ 2 T. cwt. T. cwt. 7 or 4 8 „ 1 2 15 „ 3 15 3 16 „ 4 16 „ 2 Solid matter, dry... Water 12 8 47 12 8 19 „ 3 9 12 3 „ 35 9 8 2 „ 4 6 28 9 „ 19 3 Full weight 60 21 2 38 18 36 11 23 9 Loss Total 60 60 60 Here it will be seen that, out of 60 tons original weight, the reduction amounts to nearly 39 tons in the one case and Effect of Ensilage on Fodders. 147 to about 23| tons in tlie otlier ; but the 16 tons diSerence of loss is almost exclusively water^ and the amount of nutritive material in the 21 tons of the first sample is much about the same as in the 36^ tons of the second. Consequently the one lot would be worth much more per ton than the other; and, as will be seen on reference to page 155, where the percentage of the constituents is given, and the respective values are estimated, the one sample is put down as worth 14s. per ton (which is just about the value of the original fresh maize), and the other as worth 24s. If, then, an analysis of the latter were compared with that of the fresh maize, without the reduction of weight being thought of, it might easily be supposed that the maize had been greatly increased in value by the process of ensilage. But if allowance be made for the loss of weight, a very different result is shown. The original value of the fresh maize being about 14s. a ton, the 60 tons would be worth 42Z. Comparing this sum with the weight and value per ton of the two lots of silage, we have the following results : Value. Loss. £. &'. £, s. 60 tons of green maize, at 14s. per ton ... 42 21 tons 2cTrfc. of silage at 24s. per ton ... 25 6 16 14 36 tons llcwt. of silage at 14s. per ton ... 25 11 16 9 So that the two lots, although differing so greatly in weight, are worth just about the same sum total, while both fall very far short of the original value of the green maize. It is not to be supposed, however, that this is a necessary consequence of the ensilage process. It is a result due to the process being badly carried out; and is what may be encountered, to a greater or less extent, by those farmers who think that the cheapest and easiest mode of setting to work is the best. If they put a quantity of green fodder into a pit, and get fairly eatable provender out of it, they are apt to think that every end is served. Persons not accustomed to consider the effects of fermentation often fail to appreciate the losses that may arise therefrom. What is not apparent to the eye is too often passed over as though it were non- 148 Silos for Fodder Crops. existent ; but everyone who is in the habit of burning gas in his house would be aware that a quantity of gas, for which he had to pay, might easily escape without his being any the wiser, so far as his sight is concerned ; and so it is with the most nutritious portions of the hay. It may be said, however, that if you cannot see the escape of gas, you can readily smell it, and stop the leak. True ; and in like manner you can smell the alcohol and acetic acid, and thus can trace the source of mischief ; but in neither case can you restore the loss. All that you can do is to endeavour to prevent loss for the future. At page 349 is given an account of Mr. G. Pry's experi- ments and the method recommended by him for the produc- tion of "brown ensilage," by inducing an exceedingly high temperature. The siloed forage which has undergone fermen- tation of this character is certainly pleasanter to smell and to handle than that which is very moist and has not been heated, and no doubt, as a marketable commodity, it would also be likely to prove more attractive to a purchaser who judges by appearance and odour. Whether it is so nutritious for the stock is another question. This, however, is a matter which can only be satisfactorily solved by careful experiment ; but prima facie we may assume that the high temperatures spoken of could not be produced without the consumption of a con- siderable amount of fuel, and that fuel consists of nutritious matters in the herbage. Unfortunately there are no analyses of Mr. Fry's green fodders to show what portion of the con- stituents have been consumed ; and we can do no more than put the analyses of the silage into comparison with those of other samples made from similar crops. On doing this, we find that Mr. Fry's silage takes a low position, both as regards the clover and the meadow grass ; but the figures in the table on page 155 scarcely afEord a satisfactory means of comparison because of the diiference in moisture, which is apt to mislead one as to the relative proportion of nutritive constituents. We therefore subject them all to a common standard, and recalculate them on the supposition that each sample contained Effect of Bmilage on Fodders. 149 75 per cent, of water. It will sufBce, however, to give merely the nutrients, without the water, ash, &c. We insert the month when the crops were cut, as first- cuts are usually more nutritious than aftermaths. Where, in Dr. Voelcker's analyses, the constituents are not particularised, w.e put the figures midway between two columns, as in the table on page 155. In those relating to Mr. Fry's samples^ we have added the amount of digestible fibre from the particulars by Messrs. Cross and Bevan, given at page 354; and Mr. Gibson's, where we have inserted a (?), would, in like manner, probably have to be raised to 10 or 11, if the proportion of digestible fibre were ascertained. The relative value of the different samples is stated at page 155, but it may here be mentioned that the albumenoids are worth about five times as much per lb. as the- carbo-hydrates. Olovee. Albumenoids. Oarbo-hydrateB. Fat. Vieomte de Chezelles' (July) ... 4-59 9-33 1-04 Mr. Gibson's (July) 4-63 4-22(?) Mr. Pry's (June) 2-61 12-66 Mr. Scott's (September) 2-66 12-54 Mr. Earle's (September) 2-93 8-42 1-66 Mr. Eokersley's (September) ... 3-11 13-36 0-78 Meadow Grass. Mr. Grant's (May) 3-49 10-94 0-68 Lord Walsiugliam's (July) 2-75 11-74 0-69 Lord Egerton's (July) 2-44 9-74 1-44 Mr. Fry's (June) 2-50 11-86 Mr. Duncan's (Autumn) 2-57 11-94 1-28 Mr. Smith's (October) 3-30 9-45 0-99 Of the clover samples, that of the Vieomte de Chezelles was mainly clover with a small admixture of common grasses and barley; Mr. Gibson's was clover and sainfoin; and all the others were clover and ryegrass. Mr. Fry's (cut in June) and Mr. Scott's (cut in September) are nearly on an equality ; but it will be seen, on reference to pp. 235-6, that Mr. Scott's silage from the second-cut was very inferior to his hay from the first cut. Of the grass silage, the figures after Lord Walsingham's name are the average of his three samples ; and the same is the case with Lord Egerton's. Mr. Fry's sample, from grass cut in June, is also inferior to the after- 150 Silos for Fodder Crops. maths of Messrs. Duncan and Smitli. Whetlier these results are due to poorness in quality of the fresh herbagej or to loss in Mr. Fry's process of ensilage^ is a matter of uncertainty; but at present it does not promise well for the process. And it would be very desirable not only to have analyses made of fresh herbage and silage, but to weigh quantities of green fodder put into the pit, in order to compare with the weight taken out. Mr. Pry says that "M. Groffart insists on the advantage of filling small quantities of chaffed maize at a time, but whether he really succeeded in obtaining the desired tempera- ture has not been recorded. It is clear that he knew that a brisk fermentation was an advantage, but he did not know why." Mr. Pry, however, appears to have misunderstood M. Goffart, who says again and again that there ought to be xio fermentation in the pit, and that " the best way to avoid bad fermentations is to let none of any kind be produced." Whether this is altogether possible is open to doubt ; but he makes it perfectly clear that he intends the temperature to be low, and that the heating of the silage should only occur after it is taken out to be given to the beasts, and even then the exposure should not be continued long enough for the temperature to get very high {see page 143). As far as present evidence goes, we should be inclined to adopt Mr. Fry's method if we wished to sell the silage instead •of using it ; but if we wanted to store food for feeding our own cattle, we should prefer to follow the recommendations of M. Goffart. CHAPTER X-FEEDING QUALITIES OF SILAGE. The amount of moisture in the silage has an effect which many people seem not to take into consideration, viz., that of ■diluting the nutritive material. One frequently sees general statements with respect to the feeding value of silage and the quantity requisite to be given to various animals — no regard whatever apparently being paid to the proportion of water it contains. If anyone were to assert in direct terms that 101b. of hay given with four gallons of water would nourish a cow as well as 201b. of similar hay with three gallons of water, he would be laughed at, or considered a lunatic — especially if he allowed the animal to drink more water at will. Yet many people apparently see no absurdity in statements of a like character being made indirectly when the dry food and water are combined. They seem to look upon a ton of siloed grass or other green stuff as though it represented a definite quantity of food, and estimate its value at so much per ton, or say that so many pounds per day ought to be given to a milch cow or a fatting bullock, in utter disregard of the fact that one sample may contain two or three times as much nutrient matter as another, but less water. In maize and some other crops the average percentage of water is considerably higher than in grass. Obviously, then, there must be a great disparity in the value of samples of silage, even if the only difference between them consisted in the proportion of moisture they contain. Supposing, for instance, that a sample of maize silage ■contained 86 per cent, of water, the dry material (in which is included all nutrient matter) could be no more than the remaining 14 per cent. ; and supposing that a sample of grass .silage contained 72 per cent, of water, the residue or dry 152 Silos for Fodder Crops. material would then be 28 per cent., or just double that in the maize. Consequently^ if the feeding material were equally- good in both crops, a ton of the grass silage would be worth double as much as a ton of the maize silage, because in the former there would be twice as much nutrient matter as in an equal weight of the latter. In 1001b. of the grass silage there would be 281b. of dry matter with 721b. of water (about 7j gallons), whereas, to obtain 281b. of dry matter in the maize silage you must take it in connection with 1721b. of water (about 17^ gallons). You might give your cattle 2001b. of the latter instead of 1001b. of the former fodder, but they would receive no additional nutriment, for the additional 1001b. woul merely be 10 gallons extra of water. If the grass silage, instead of having the average amount of moisture, contained only about 51 per cent, of water, as in the instance mentioned by Sir John Lawes (page 160 a), the contrast would be still more marked ; for 1001b. of silage with 51 per cent, of water would have just as much dry material as 3501b. of silage with 86 per cent., the difference being that in the former the nutrient matter is diluted by 5 gallons of water and in the latter by 30 gallons. YaLUE of GrEBBN FoDDEES AND SiLAGE. The difference in the proportion of water is not the only cause of variation in the value of silage ; for the crops them- selves differ in their chemical constituents. It has there- fore been thought desirable to give some idea of the relative value of analysed samples of silage, and to place them in comparison with dried and green fodders whose value has been previously estimated by competent authorities. In Germany an immense amount of work has been done by the professors of agricultural chemistry at the various Govern- ment experimental stations in ascertaining the digestibility and estimating the feeding value of different crops. Not only have the crops been analysed at different stages of growth, but animals have been fed on the herbage in a green state, or after it has been made into hay, or preserved in some other Feeding Qualities of Silage. 153 fashion ; and the excreta of the animals have been analysed, in order to ascertain what proportion of the food has been digested by the animals and what has been voided without being utilised. From calculations published by Professor von Wolff the ensuing table is for the most part compiled. It gives the chemical constituents and amount of digestible nutrients contained in various kinds of hay, green fodder crops, &c., together with the money value. But inasmuch as German values per 1001b. would be of little service to the English reader, seeing that prices and weights are not alike in the two countries, it has been thought best to turn those values into shillings per English ton, at the same time raising the prices to our level. At the time of doing this the current rates in the London hay market are returned as follows : " Best meadow hay, 80s. to 90s. ; inferior, 50s. to 70s. Best first cut clover, 100s. to 108s. ; inferior 70s. to 80s. ; second cut clover, 75s. to 90s." Accordingly, the German value for very good meadow hay has been raised to correspond with 80s. per English ton ; and this having been taken as the basis for comparison, all other fodders are raised iu similar proportion, so that prime meadow and clover hays, &c., also assimilate themselves pretty fairly with our current prices. To the estimated values of several kinds of German silage, as included in Prof, von Wolff's tables, we have added some that are American, taken from Prof. Stewart's book on "Feeding Animals," the blanks in the early columns occurring in the original. The remainder (in which blanks occur in the later columns) are founded on analyses contained in this work, in the R.A.S. Journal, Mr. Woods' pamphlet, M. Goff art's book, &c. In the absence of any special experiments to ascertain the digestibility of the silage, we have not attempted to fill up the blanks in these columns, but have endeavoured, as nearly as we are able, to estimate the approximate value of the various samples. We have also given in the first table, for the sake of comparison, the corresponding values of the green fodder before ensilage, wherever analyses of both were forthcoming. 154 Silos for Fodder Crops. Kind of Fodder. Oeoanio StTBSTANOES. DlQBBTIBIE NOTBIBNIS. -si 5-9 HAYS, Meadow hay, poor „ „ better , „ „ raedium „ „ very good , ,, „ extra prime Italian ryegrass , Perennial ryegrass , Ked cloverj poor ,, „ medium „ „ very good „ „ extra prime "White clover, medium , Trifolium incarnatum , Lucerne, medimn Sainfoin (cut in flower) Serradella „ Vetches (cut in flower) „ (before flowering) Spurrey hay, German , GREEN FODDEB AND BOOTS Pasture grass Eich pasture grass Grass, just before flowering , „ Lord Egerton's ,, Lord "Walsingham's , Upland grasses, average Italian ryegrass Perennial ryegrass Pasture clover, young Bed clover, before flowering „ „ in full flower , Wnite clover, In flower Trifolium incarnatum Serradella (Ornithopus sativus) ...... Sainfoin Vetches, beginning to flower Green maize, German „ „ American „ „ M. Goffart's „ ,, Lord Walsingham's... Spurrey, German Buckwheat, in flower Green oats Green rye Green rape Cattle cabbage Kohl-rabi leaves Swede turnip tops „ „ roots ,, „ Lord Walsingham's... Mangold tops „ roots (German) „ do. (English, average) ... „ do. ( do. 181b. roots)... Sugar beet roots Artichoke tops „ tubers Potatoes, tops (October) „ tubers Toung thistles Gorse (cut in August) 14-8 (i-n 14-3 5-4 14-3 H-?, 18-0 7-n 160 7-7 14-» 7-R 14-3 6-5 160 6-1 160 5-S 16-.5 6-0 16-6 7-0 16-5 6-0 16-7 SI 16-0 fi-2 16-7 fi-2 16-7 7-S 16-7 8-3 16-7 9-3 16-7 9-5 80-0 78-2 75-0 70-5 75-6 70-0 73-4 70-0 830 83-0 80-4 80-5 81-5 80-0 80-0 820 82-2 84-0 81-3 83-7 80-0 86-0 81-0 76 87-0 84-7 850 88-4 87-0 88 5 90-5 88-0 S8-0 92-5 81-5 80-0 800 78-0 7S-0 86-7 72-0 7'5 9-2 97 117 13'5 11-2 10'2 11-1 12-3 1 13'5 ' 15-3 14-5 12'2 14'4 13-3 13'5 14'2 19'8 12-0 3-5 4-5 30 3'0 2-2 3'4 3'6 3-6 4'6 3-3 3'0 3-5 27 30 3-2 3-5 1-2 1'4 1'2 1-2 2-3 2-4 2-3 3'3 2'9 2'5 2'8 2-1 1-3 1'4 1-9 1-1 1-4 0-4 I'O 3'3 2-0 2'3 2-1 2-9 3-2 33-6 29-2 26-3 21-9 19-3 22-9 80-2 28-9 260 240 22-2 25-6 30-4 380 27-1 22-0 25-6 23-4 22-2 4-0 4-0 6-0 9-5 11-4 101 7-1 10-6 2-8 4-6 6-8 6-0 6-2 5-2 6-5 6-6 4-7 4-7 4-9 8-2 e-3 4-2 6-5 7-9 4-2 2-4 1-4 1-6 1-1 1-2 1-8 0-9 11 i's 3-4 1-3 6-0 11 1-4 13-3 ,38-2 397 41-2 42-3 40'5 40-6 3S-1 377 38'2 37-1 35'8 33'9 32-6 27'9 34-2 35-6 32-8 28-5 36-6 97 lO'l 13'1 141 8'8 13-4 12-1 12'8 7'2 7'0 8'9 7'2 7'3 8'9 8-2 6-6 10'3 8-4 ll'O 5'1 97 6-4 8-3 10-4 37 81 8-2 5-2 9'5 8'2 4'0 91 8-5 5-9 15-4 9-8 15-5 97 207 61 8-2 3-4 4-6 5-4 7-4 9-i 7-1 51 6-7 70 8-5 10-7 8-1 6-2 9-4 7-6 8-5 9-4 16-1 7-6 0'8 10 0-8 0'8 0'4 1-0 1-0 I'O 0-9 07 0'6 0'8 07 11 0-6 0'6 OS 0-5 0'3 0'4 07 0'6 0'5 0-8 0'6 07 0'8 0'5 01 0-2 0-5 01 0-2 o-i 0-8 0-2 1-0 0'2 0'9 i-r 34-9 36-4 411 41-7 42-8 41-6 85-8 37-9 38-1 38-2 37-6 36-9 84-9 28-3 36-8 86-2 82-5 311 86-8 1-6 1-5 1-; 1-9 2-0 1-8 2-0 1-5 1-3 i'i 11 1-0 20 2-0 1-0 2-1 2-2 0-5 0-6 0-9 1-8 1-5 1-4 0-8 10 1-2 1-7 31 2'0 1-4 1-0 1-4 2-8 1-6 1-4 l-£ 0-4 0'6 0-4 0-5 0-4 0-4 0-6 0-6 0-4 0-5 0-3 0-7 0-3 0-g 0-2 0-3 0-4 0-2 0-4 0-4 0-4 0-4 0-3 0-1 6-2 0-1 O'l 0-4 0-2 0-3 0-2 0-6 Feeding Qualities of Silage. 155 Kind of Fodder. SILOED FODDERS. Bed clover, Q-ermau „ American Olover and sainfoin, Mr. Gibson's ... Clover and grass, Vicomte Ohezelles „ „ Mr. Eclsersley's... „ „ Mr. Earle's >> „ Mr. Fry's „ ^ Mr. Scott's Grass, Lord Walslngliam's, No. 1 ... „ do. No. 3 „ do. No. 3 „ Lord Egerton's, No. 1 „ do. No. 2 „ do. No. S „ Mr. Duncan's „ Mr. Fry's „ Mr. Grant's „ Mr. Smith of Wilmslow Bye Grass, Glasnevin. No. 1 do. No. 2 Eye, American (Dr. Voelcker) ,, Mr. Gibson's Maize, German „ American (Dr. Voelcker) „ do. average of eleven analyses „ Lord Walsingham's „ M. Goilart's (p. 181) „ Prof. Moser's, 17in. (p. 180)... „ do. 34in. (do.) ... „ do. No. 2 (do.) „ M. Oottu's, 1877 „ do. 1880 Spurrey, Lord Walsingham's Sainfoin, German „ (M. Oottu's) Artichoke leaves (do.) „ tubers (do.) Swede turnip roots (fermented) Sugar beet leaves Potato tops 79-2 79-2 57-6 60-3 75-0 78-1 75-8 79-1 74-3 65-9 78-6 68-7 66-8 78-6 78-4 74-4 70-4 81-4 66-6 68-1 76-2 72-6 83-5 82-4 82-0 86-3 81-3 57-6 77-8 80-7 830 77-7 73-5 62-5 74-5 651 78-5 84-6 80-0 77-0 Oesanio Substances. 4-2 7'9 9'1 3'1 2-6 2-5 2-2 3-0 3-6 2-8 3'0 3-4 2-1 2'2 2-6 4-1 25 2-8 2-6 1-8 2-0 1-2 1-3 VI 1-2 1'9 1-0 0-8 1-2 I'O 2-4 9'8 4-6 2-4 1-6 1-4 3-0 2-9 5-9 23-3 14-3 S-.5 8-0 7-S 6-3 6-5 9-2 8-1 6-4 7 18-6 13'4 7-4 12' 10' 13'0 17-7 10'9 ll'l 15-4 7-4 I 8-0 6-2 i 10'3 8-7 , 12' 13-0 7-0 S-5 6-8 11-3 I 15-2 10-1 110 9-7 6-3 6-1 si 4-9 18-3 10-4 8-4 4-4 8-2 8-8 15-4 6-0 7-3 2-3 1-7 2-7 4-7 14'8 9-6 13' 8'0 8'5 4'8 lO'O 16'6 7-5 6-8 9-6 13'9 10'2 16-7 11'4 20-8 14-8 10-8 9-0 7-5 2-2 l" |2'1 O'S \Vb 3 '6 0'7 0-9 0-8 2'3 1-8 0'9 I'l 2 0-8 0-7 0-8 0-8 0'9 •6 0'9 1-6 0-4 0'4 1'9 ri ri 0-5 0-4 1-5 2'3 0-6 0-4 0'2 0'2 1'2 2-6 DlflBSTIBIiIS Nutrients. ^3, 28». 30s. 60s. 66j. 26s. 20j. 21s. 18s. 24s. 26j. 21s. 25s. 26s. 18s. 20s. 21s. 29s. 18s. 21s. 23s. 17s. 19s. 14s. 16s. 17s. lis. 14$. 24s. 14s. 12«. 13s. 14s. 22s. 56s. 29s. 24s. 21s. 20s. 18s. 16s. The three columns whioli give the constituents containing the nutritive materials in the provender are printed in more conspicuous type. These nutrients are not of equal money- value ; the albumenoids and fat being worth about 2|-d. for each pound digested, whereas the carbo-hydrates, including digestible fibre, are worth about one-fifth of that amount, or ^d. per lb. Where the figures stand across two columns, the "fatty matters^' are not separated from the other carbohydrates in Dr. Voelcker^s analyses. In two of the lines with reference L* 2 156 Silos for Fodder Crops. to mangolds, we have included Dr. Cameron's analyses of average-sized and extremely large roots, in order to show that the feeding value varies with roots as well as with silage, and that there is comparatively little nutriment in huge watery specimens, although heavy manuring may produce a greater number of tons per acre. Results op Feeding Experiments. A cattle-feeding experiment carried out by Mr. Stobart at Pepper Arden is described by his agent, Mr. Basdale, at page 208, where a table is given showing the weights of the animals before and after the experiment. Twelve beasts received 111b. each daily of meal and cake, but six of them were allowed 24^1b. of hay and 961b. of turnips, while the remainder had 751b. of silage. At the end of three weeks the latter had increased in weight 4|cwt. and the former 4cwt. Iqr. 71b., being a difference of 491b. in favour of the animals fed upon silage ; i. e., rather more than 81b. each for the whole period, or about 6oz. each per day. Some conclusions which Mr. Basdale arrived at were taken exception to by Mr. T. Parry, in the Farmer's Gazette, as follows : Mr. Easdale contends tliat this experiment proves tlte superiority of ensUage over the quantities of hay and turnips specified above, leaving " a considerable something to spare besides." Very well, let us examine the facts. In Lot A, 13321b. of live weight increased, on an average in 21 days, 88'61b., while in Lot B 10821b. of live weight, on an average in 21 days, made an increase of SO'Slb. in live weight. If we reduce these different increments into a " common denomination," we shall find the relative increase in each case. In Lot A every 1001b. live weight increased 6'61h. in 21 days, while every 1001b. live weight in Lot B increased 7'51b. in the same period — showing a difference of 12 per cent, in favour of hay and turnips. Mr. Easdale's contention, therefore, hopelessly falls to the ground. I would also point out that the omission of various details, such as the proportions and kinds of cake and meal given to the beast, the kinds of hay, the ages of the stock, and their recent history — these, combined with the rather serious difEerenee in the total weights of each lot, are calculated to vitiate the accuracy of the experiment, and in this particular case as a test of the nutritive value of ensilage. Feeding Qualities of Silage. 157 We agree witli Mr. Parry that the omission of various details, and the differences in the weights of the animals, have a tendency to vitiate the accuracy of the experiment. But the result is not quite so bad as appears from his letter ; for, by some accident, he has put the average weight of Lot A as 1001b. more than it should be, and that of Lot B as 191b. too little; seeing that 66cwt., or 73921b., give 12321b. as the average of the six animals in the former lot, and 59cwt., or 66081b. give the average of the latter as 11011b. If these errors be rectified, Lot B, when the increase is calculated on every 1001b. of live weight, still have an advantage, but, instead of its being 12 per cent, in favour of hay and turnips, it is only 2 per cent. (It may be well here to point out, in order to prevent confusion, that Lot A of Mr. Parry's letter is the second lot in the table as printed in Mr. Basdale's letter on page 208, where Lot B is placed first.) Agreeing, as we do, with Mr. Parry, that the increment in animals of different weight ought to be reduced to a common basis of comparison, we should not have reproduced his remarks merely for the purpose of pointing out an inaccuracy in the figures. We wish, however, to show that, in order to form a reliable estimate of the improvement of animals that vary in size, it is necessary, not only to take into consideration the relative increase on original live weight at the beginning of the experiment, but also to allowance the fooA in propor- tion to that weight. Such, however, was not done in the experiment now under consideration. The animals in Lot B received the same quantities of meal and cake as the heavier beasts in Lot A ; and, with respect to the rest of the dietary, the smaller beasts had much the greater amount of food. This may not be obvious at first sight ; but if we examine the quantities more closely we shall find such to be the case. Lot B received 24|-lb. of hay, which, at the average amount of moisture in hay (15 per cent.) would consist of about 3|-lb. of water and 211b. of dry material. They also received 951b. of turnips, which, with 88 per cent, of moisture, would contain about 841b. of water, and 111b. of dry matter. Accordingly, 158 Silos for Fodder Crops. each of the animals in Lot B received 321b. of dry feeding material per diem^ besides the meal and cake. Lot A received 751b. of silage ; and by Mr. Jenkins's report it appears that a sample of Mr. Stobart's silage contained 76 per cent, of water. At this rate 751b. of silage would consist of 671b. of water and 181b. of dry matter. Consequently there would be 31b. less dry feeding material in the 751b. of silage than in the 24|lb. of hay alone^ and 141b. less than in the hay and turnips together. If these two lots of animals had been fed in proportion to their weighty Lot B would have had more than one-tenth of their supply of meal and cake cut off ; and their allowance of hay and turnips would have been reduced one half, seeing that they were receiving in this form 321b. of dry feeding matter, whereas their proper proportion was only 161b. On the other hand, if 321b. was not too much for Lot B, then 361b. was the proportionate quantity for Lot A, and they were entitled to double the amount of silage they received, or to an equivalent in some other supplementary food. Indeed, if anything, the quantity should be greater, as, weight for weight, the dry constituents of swedes stand higher in feeding value than those of grass or hay ; and it is with respect to the dry con- stituents of the food that the above remarks are made. Taking these circumstances into consideration, there seems little ground for surprise that Lot A did not make greater progress in comparison with their live weight ; the surprising matter is that they increased as they did, and to the extent shown in the following table : ATorage Weight Average Weight Increase in Increase on Nov. 17. on Deo. 8. 21 days. per diem. Lot A ... 12321b. ... 13281b 961b., or 7-19 per cent. ... 41b. 4oz. Lot B ... llOUb. ... 11821b 811b., or 7-34 per cent. ... 31b. 14oz. The percentage of relative increase in Lot A is, as previously remarked, a httle lower than in Lot B, but the actual increase in the silage-fed beasts was highest by 6oz. a day, though receiving much less feeding matter in their rations. The conclusion that we arrive at is, that the effect of the silage Feeding Qualities of Silage. 159 was not confined to its own nutrient qualities, but that there were certain constituents in it which enabled the beasts to digest more thoroughly the 111b. of cake and meal, and thus to extract more nutriment from the lesser quantity of feeding matter. The benefit derived from food lies, not in the quantity that is eaten, but in the quantity that is digested. That such an effect as is here indicated is produced by mixing silage with other food is, we think, clearly proved by the evidence of various experiments. Prom what we have said at page 25, and the estimates given at pp. 155-6, it will be obvious that we consider maize to be of comparatively low feeding value, when regarded as a sole article of diet ; nevertheless we cannot overlook the consequences of an admixture of maize silage with other food, as shown by the result of the experiment carried on with Lord Walsingham's cows, and detailed by Mr. Woods in his South Kensington lecture. We have, on the one hand, the figures of Mr. Sutton^a analyses, stating the constituents of the maize before and after ensilage ; and, on the other, we have Mr. Woods' tables showing the quantity of milk and proportion of cream given day by day with the different dietary, and can see the effect produced by the change from one dietary to another. Either we must conclude that these figures are fictitious (which we are not at all disposed to believe), or we must suppose that the maize silage had an influence over and above the amount of nutriment inherent to itself, and that that influence was shown in its turning other portions of the rations to more profitable account. At the time of entering upon the trial two cows were receiving a daily allowance of 61b. maize meal, 81b. bran, and 30Ib. chaff (mixed hay and straw). The weight of the respec- tive animals and their daily produce of milk and proportion of cream were as follows : Weight. Milk Average. Oream. Lady Manchester ... 48st 114 quarts 11° Spark4th 56st 11 „ 11° On Jan. 10 the dietary was altered, and both animals 160 8ilos for Fodder Crops. received 81b. maize meal, 21b. bran, and 101b. chaff (straw), in addition to whicli Lady Manchester had 421b. of maize silage, while Spark 4th had 701b. of Swedes. Lady Manchester continued to receive her dietary of silage, &c., for twenty-eight days. Spark 4th received the swedes for twenty-two days, and for the other six days she had exactly the same food as Lady Manchester, the silage being substituted for swedes. The average produce of milk and cream of the two animals, and their respective weights at the end of the four weeks, were as follows : Lady Manchester (28 days) . Spark 4tli (22 days) Weight. .. 62st. ... .. 58st. ... Milk Average. . . . 14|- quarts . . . ... 12i „ ... ... 15i „ ... Cream. ... m° 12*° Ditto (6 days) ... 13° By comparing this and the last table it is seen that at the end of the time Lady Manchester weighed 4st.j or 561b., more than at the beginning, having increased 21b. a day on the average. With Spark 4th the increment was only half as great, as she was 281b. heavier at the end of the month, and thus had increased lib. a day on the average ; but how much of that increase occurred while she was on turnips, and how much on silage, does not appear on the record. With regard to the milk supply, however, the information is more explicit. Lady Manchester gave 2\ quarts more milk a day on the average of the month, and the cream rose from 11° to 14°. Spark 4th gave an increase of IJ quarts a day on the average during the time she had the swedes, the cream rising from 11° to 12 i°; but during the six days in which the swedes were changed for silage there was a farther increase of 3 to 3i quarts a day, while the cream rose to 13° j so that, whereas she had always been lowest in quantity of milk previously, she " came with a bound " on receiving the silage, and surpassed her rival by 3 pints a day, although she did not attain the same level as regards proportion of cream. Evidently, therefore, there must have been something ia the silage to produce so marked a difference of result ; and the question is, what is that something ? So far as regards Feeding Qualities of Silage. 160a the mere quantity of nutriment in the two kinds of provender, Mr. Sutton's analyses show that the advantage was greatly in favour of the swedes. Instead of taking mere percentages, let us change the figures so as to represent the actual quanti- ties given to the animals in their daily rations, viz., 421b. of maize silage and 701b. of swedes respectively ; then the pro- portions of water and other constituents stand as follows : Maize Silage. Swedes. Albumenoids (flesli formers) 0-481b 0-971b. Carbo-hydrates (sugar, gum, &c.) ... 1'77 5'71 Fatty matters O'lS 0-15 Woody fibre 2-13 0-86 Ash 0-97 0-37 Acetic and lactic acids 0'23 O'OO 6-76 806 Water 36-24 61-94 Total 421b. 701b. We here find that the chemical constituents in the first three liaes — on which the nutritive value of the provender is estimated — are very much higher ia the allowance of swedes than in the allowance of silage. The albumenoids in the swedes are twice as high as in the silage, the carbo-hydrates more than three times as great, and the fatty matters nearly equal; while the indigestible woody fibre and ash are exceedingly abundant in the silage, forming more than one half of its entire solid matter. If, however, there is so much less nutriment in the silage than in the turnips, it may be asked. What is it that causes such an improvement in results ? On looking over the constituents of the silage, it will be seen that there is a certain item which has no corresponding quantity in the swedes. There is 0-231b., or nearly 4oz., of acetic and lactic acid in the one, and none whatever in the other. Excluding the water in the silage, nearly one- twentieth of its whole weight consists of the acids; and here we may probably find a clue to the mystery. Lactic acid is a very powerful solvent of food ; and its effect would 160 B . SUos for Fodder Crops. not be limited to tlie silage in whicli it is formed, but it would Hkewise assist in the digestion of otber portions of the provender given to the animals. In the 421b. of silage there waSj as shown in the table, less than 61b. of solid matter; but this was supplemented by 81b. of maize meal, 21b. of bran, and 101b. of straw chaff, or 201b. altogether; so that the silage formed only about one-fourth of the entire quantity of solid food contained in the daily dietary. The whole of this additional 201b. would not be utilised under ordinary circum- stances ; for, as will be seen by reference to the particulars given by Mr. Woodland Toms on page 173, a very large pro- portion of some of the most nutritious constituents of the food will generally pass through the animal undigested. If, then, the solvent action of the acids contained in the silage enables a larger portion of the meal, bran, and straw to be digested, the animal that receives the silage may obtain a much larger amount of nutriment from its daily dietary, although the whole of that additional nutriment may not be directly derived from the silage itself. Another ground for believing that the advantageous effects, produced by the silage are not due merely to its own nutrient qualities, is to be found in the fact that, in various instances, when the quantity of silage has been increased beyond certain limits, the animals have fallen off in condition, although the amount of meal or hay withdrawn was apparently not disproportionate to the extra quantity of silage given. One may readily understand that a limited amount of some condiment may serve as an aid to digestion, yet that, by unduly increasing the condiment and reducing the other articles of diet, deterioration would ensue, instead of improvement. It is very probable that some of the conflicting accounts of results of feeding experiments with silage may be due to the different quantities of acids produced in the fodder; for the greater the acidity in the product, the less would it be fitted to become a sole article of diet. Maize is likely to produce a much greater amount of acid than many other crops ; and as Feeding Qualities of Silage. 160 o maize silage is given as an exclusiTO article of diet by some American farmers, it is not surprising ttat bad results a.re reported from time to time ; for an animal may thrive on 201b. of acid silage mixed witli meal, &c., but may do very badly on 1001b. of the same silage and no meal. Further investiga- tion is required to trace the effect of different methods of ensilage in producing the various acids, lactic, acetic, and butyriCj as well as their influence on the digestion of the animals ; but where very large quantities of silage are given daily with satisfactory results it seems probable that the pro- portion of acid is comparatively small. An experiment in fattening cattle which is rather remark- able for the very large quantity of silage that was given to the animals was carried out by M. Mviere, whose experiment, in the slow filling of his silo is narrated at page 116. He gave in the Journal d' Agriculture Pratique of March 22, 1883, an account of the feeding of two bullocks, of the Charolais breed, on some Trifolium incarnatum which he had siloed. The daily rations per head were regulated as follows : Trifolium Bilage. Cotton cake. Dec. 1 to 15 60 kilos (1321b.) Dec. 15 to Jan. 15 50 kilos (1101b.) 3 kilos (6^1b.) Jan. 15 to March 6 40 kilos (881b.) 4^ kilos (101b.) M. Niviere states that the cake was first soaked in water, and given at each meal in the form of a soft paste. One animal he sold on Feb. 20, and the other on March 16. The live weight of the two beasts at the commencement of the experiment was 1403 kilos (30911b.) ; the fattening was carried on for 81 days with one and for 95 days with the other, making a total of 176, or an average of 88 days each; and the daily increase was 1034 grammes, or 21b. 4|oz. each. In the same journal, on May 15, 1884, M. Niviere gives the result of his feeding experiments with the crop siloed in June, 1883, which consisted of mixed grasses (described on p. 116), cut in full flower. Besides affording provender for working bullocks, milch cows, &c., this silage formed the basis of 160d Silos for Fodder Crops. nutrition of fourteen fatting beasts. The average weight of these animals was 555 kilos (12241b.) ; they cost 70f. the quintal {M. per lb. or 3s. 6d. per stone) live weight, and were sold at 78f . (3s. lO^d. per stone) weighed and delivered on the farm. Their rations were 71b. of silage for every 1001b. of live weight, besides 3i kilos (71b. 2oz.) of cotton cake per head, and nothing more. The mean duration of the time of fattening was 61 days, and the increment per head per day was 1047 grammes (21b. 5oz.) At pp. 276-280 we have given particulars of the ensilage experiments carried out by Mr. Edwards at the St. Alban's Dairy Farm. It is stated at the end that feeding experiments were to be carried out under the superintendence of Sir John Lawes, but at the time those pages were printed the results had not been make known. Since then (in the Live Stock Journal of May 9, 1884) a most elaborate series of tables has been published ; and these we propose now to summarise. Three lots of cows, seven in each lot, were selected, and fed before the commencement of the experiment on 41b. cotton cake, 41b. maize meal, 21b. bran, 101b. oat straw, 211b. grains, and 241b. cabbage. Omitting minute fractions, the dietary and produce during two months' trial were as follows : Lot 1. — Comparative food : 181b. chaff and 451b. mangold per head per day. Week ending Cotton Cake. Maize Meal. Bran. Chatf. Man- gold. Total Food. MUk per day. Dec. 11, 1883 ,. 18, „ lb. 4 4 4 4 3i 3 3 3 3 3 lb. 4 4 4 4 3i 3 8 3 8 3 lb. 2 2 2 2 2 2 2 2 2 2 lb. 19i 20 18 18 18 18 18 18 18 18 lb. 154 43 45 45 45 46 45 45 45 45 lb. 45 73 73 73 72 71 71 71 71 71 lb. oz. 17 9 17 2 „ 25, „ 18 9 Jan. 1, 1884 17 7 16 4 „ 15, „ 15 12 15 12 „ 29, „ 15 9 Feb. 5, „ 18 13 „ 6 to 9 17 11 . C Fresh food Average [D^yj^atter 3-4 2-9 8-4 8-0 2-0 1-7 18-2 15-2 44-7 5-6 71-7 28-4 17-0 Feeding Qualities of Silage. I6O1 Lot 2. — Comparative food : 14'41b. ohafE and GOflb. mangold per head per day. Week ending Cotton Cake. Maize Meal. Bran. Ohalf. Man- gold. Total food. MUk per day. Dee. 11, 1883 lb. 4 4 4 4 34 3 3 3 3 3 lb. 4 4 4 4 34 3 3 3 3 3 lb. 2 2 2 2 2 2 2 2 2 2 lb. 7 16 I5i 14i 14 14 14 14 14 14 lb. 36 59 66 62 60 60 60 60 60 60 lb, 53 84 90 86i 83 82 82 82 82 82 lb. oz. 19 6 18 9 „ 25, „ 18 3 Jan. 1, 1884 18 3 19 1 „ 15, „ 20 8 „ 22, „ 20 13 „ 29, „ 20 16 Feb. 5, , 20 8 6to9 20 5 .„„,„„„ f Fresh food Average [^ry matter 3-4 2-9 3-4 30 2-0 1-7 14-4 11-9 60'7 7-6 83-9 27-1 1911 Lot 3. — Comparative food : 401b. silage per head per day. Week ending Cotton Cake. Maize Meal. Bran. Silage. Man- gold. Total food. Milk per day. Dec. 11, 1883 lb. 4 4 4 4 3i 3 3 3 3 3 lb. 4 4 4 4 3i 3 3 3 3 3 lb. 2 2 2 2 2 2 2 2 2 2 lb. 291 40 40 40 40 40 40 40 40 40 lb. 20 lb. 69i 61i 50 50 49 48 48 48 48 48 lb. oz. 17 6 15 14 „ 26, , 19 3 Jan. 1, 1884 18 8 17 7 16 8 „ 22, , 16 14 16 10 Feb. 6, „ 15 13 6 to 9 15 1 A „,„„„ r Fresh food Average [j^ry matter 3-4 2-9 3-4 3-0 2-0 1-7 40 19-4 0-2 0-03 49 27 16-4 Without individualising the animals, they may be briefly described in the foUowiag particulars, to which is appended the average yield of milk of each lot on the day before the experiment began : Average Miik. Lot 1. — Seven cows, averaging 24 weeks 3 days since calving ^° 3 Lot 2. — Seven cows, averaging 20 weeks 4 days since calving •■■•• ^^ -^* Lot 3.— Seven cows, averaging 16 weeks 3 days since calving ^° ^^ 160 F Silos for Fodder Crops. From Dec. 4 to Feb. 9 tlie three lots were fed alike as to cake, meal, and bran, but varied as to cbaff, mangold, and silage. The chaff throughout, except on the first day, con- sisted of one-third hay to two-thirds oat straw. The average cost of the food per head per week from Dec. 12 to Feb. 9 is estimated as follows : Cotton Cake. Maize Meal. Bran. Cliafl. Man- gold. Silage. Total, Lotl J. d. 1 4 1 4 1 4 s. d. 1 9 1 9 1 9 s. d. 8 8 8 s. d. 2 3 1 9i s d. 1 4f 1 lOf s. d. 4"4i s. d. 7 4i Lot 2 :. 7 5i 8 li Lots Price per ton £6 5s. £8 5s. £5 5s. £2. lOs. £116s. The price per ton, at the foot of the last table, gives the sums on which the previous calculations of cost were based. The cotton cake was undecorticated ; the chaff was one-third hay at 3Z. per ton and two-thirds oat-straw at 30s. a ton. The value of the silage was calculated by Sir J. B. Lawes in this way : To the dry matter in the silage was added one-fifth- of its weight (to put it on an equality with the hay as regards amount of moisture), and then it was reckoned at the same price as the hay, viz., 3Z. a ton. Mr. Edwards, being of opinion that the calculations of cost of feeding put the silage at a disadvantage, wrote to Sir John Lawes on the subject, and his letter, and the reply thereto, were as follows : " Westminster Lod^e, St. Albans, 21st April, 1884. " Dear Sir John, — I am extremely obliged for tbe very exhaustive and complete calculations you have sent me, relating to the experiment of Silage V. Mangolds ; but I should like to draw your attention to one point — namely, that of the ' cost per head ' of each lot of cows. I find you have taken the cost of hay at 3L per load; that is too low, as I am making 3Z. 13s. Qd. of the same class of hay in the rickyard. The mangolds you have taken at 10s. per ton; this is also too low, as I bought all the mangold at 17s. per ton delivered at the dairy. The value of the sUage I think you have placed much too high ; I only estimate its value at one- third that of hay. If you were to base your figures on the above, I think you win find that the ' cost per head per week ' is about as follows : — Lot 1, Qs. Qd.; lot 2, 9s. Id. ; lot 3, 7s. Id. My reason for estimating the silage at one-third the value of hay is that I find I had three times Feeding Qualities of Silage. 160g -the weigtt of silage to ttat of hay per acre. The loss of weight of the grass in the silo was very trifling (if any). I quite agree with you that "the bent grass I used was not succulent enough to make first-rate silage ; therefore, I think that silage made from more succulent grass or maize will prove a valuable addition to a dairy farm. I shall be glad to hear your views as to the above figures. — Tours truly, " Sir J. B. Lawes, Bart., Rothamsted." " I. BT. Edwaeds. " Rothamsted, St. Albans, April 22, 1884. " Dear Sir, — In estimating the value of food, we consider it to be the fairest plan to make some allowance for the manure value. When they are consumed on the farm, the manure value of a load of hay is really worth more than 13s. &A. With regard to mangolds, I should estimate the food value at about 10s. per ton, manure value 6s., total, 15s. If you purchased mangolds regularly, I think that you might have them for 15s. per ton. With regard to the value of silage, the calculation was made as follows: 40 X 7 = 280, at 60 per cent, of water = 1401b. ; add 201b. of water, to bring it to hay composition, makes it nearly equal to IJcwt. hay ; so we valued it as hay. It would appear by the various statements that hay -making and ensilage-making cost about the same. Tou can, of course, make any alterations you please in the figures. I hope, if you make ensilage this year, that you will weigh the grass which goes in care- fully. — Tours truly, J. B. Lawes. I. N. Edwards, Esq." The difference in tte cost per head per week, as estimated "by Sir John Lawes and by Mr. Edwards is shown in the following table : Sir J. B. Lawea. Mr Edwards. s. d. 7 4i 7 5i 8 li s. d. 9 6 9 7 7 1 Lot 1. — Mangold, &c. Lot 2. — Mangold, &c. Lot 3. — Silage, &c. .'. . On the question whether, in estimating the cost of the food, a reduction in the price of hay and turnips ought to be made on account of their manurial value, opinions may be allowed to differ; but we think that Sir John Lawes' s mode of estimating the value of the silage is a much more reliable one than that of reckoning it as one-third the value of the hay. Indeed, with grass so dry that the silage contained only about 50 per cent, of water, we do not see how it would 160h Silos for Fodder Crops. he possible to get three times as much silage as hay from the same quantity of herbage. (Eemarks on the proportion of hay to silage will be found on page 108.) Some rather curious results are shown in these feeding experiments. When the cows were taken off grains (probably containing more acid than this dry silage) ^ the milk fell off with all three lots, though not in an equal degree, as will be seen by the following figures : Before the Experiment, During the Experiment. First week. Second week. Third week. Lot 1 lb, oz, 19 3 19 14 18 11 lb, oz, 17 9 19 6 17 6 lb. oz. 17 2 18 9 15 14 lb. oz. 18 9 Lot2 18 3 Lots 19 3 In the third week of the experiment, Lot 3 was the only one that had got up to its original quantity. In the fifth week, as will be seen by reference to the previous tables, the amount of cake and meal was reduced, and further reduced in the following week, whereupon Lots 1 and 3 dropped again, the latter especially; but Lot 2, strange to say, although reduced in mangold and chaff as well as cake and meal, gave, for the next five weeks, on the reduced dietary, a larger supply of milk than they had given before. This series of experiments, unlike the others, does not redound to the credit of the ensilage process ; but the silage appears to have been of inferior quality. Not only was the grass too dry to produce the best results, but the form of the silo (shown on page 276) was opposed to a proper settlement of the material it contained. Mr. Jenkins says, ia the R.A.S. report : " The cause of so much mould and waste is not far to seek. A glance at the section of the silos will show that they have sloping sides, and therefore the weighted doors could not follow the pitted fodder as sinking progressed. This was made evident as soon as the arrangement was seen, owing to the curious inequalities of surface which the doors presented." Feeding Qualities of Silage. 160 1 Among the less elaborate experiments in feeding that have been carried out are the following : In Earl Fortescue's experiments (page 240), nine cows were divided into three classes (A, B, and C) and put respectively on the following dietary, each animal receiving one-third of the quantity stated : Decorticated cotton cake . , . , OlasB A. ... 61b 6 Class B. 61b 6 Class 0. 61b. 6 6 6 6 Pollard 6 6 Wheaten straw chaiS ... 16 16 Hay Grass silage ... 36 ... lOO ISO For the three weeks from Dec. 26 to Jan. 16, Classes A and B were fed as above stated ; but at the end of a fortnight the experiment was stopped as regards Class C, for the animals lost condition, and fell off in the quantity and quality of the produce as compared with Class B. It will be observed that the dietary is alike for all, except in those parts printed in blacker figures. Where 1001b. of silage was substituted for 361b. of hay, there was a slight increase of both milk and butter ; but where another 501b. of silage was substituted for only 161b. of wheaten straw chaff, there was a diminution in quantity, and the butter was ill- flavoured. Prom remarks made in the early part of Lord Bbrington's lecture (page 240), the silage does not appear to have been first-rate ; but it would seem probable that it con- tained acid or other chemical constituents which enabled it to educe from the remainder of the dietary some amount of nutriment over and above that contained by itself, and that this only operated within certain limits, beyond which the effect might be detrimental. Except for some such qualities it would be difficult to account for the fact that, on the one hand 1001b. of silage gave a better effect than 361b. of hay, and, on the other, that 501b. of silage gave a worse effect than 161b. of straw ; for we can hardly expect wheat straw to be 12 per cent, more nutritious than hay. L ** 160j Silos for Fodder Crops. Mr. Poabery-j agent to the Earl of Warwick, gives (page 256) particulars of a feeding experiment with two lots of four cows each, which had been giving as nearly as possible the same results when fed on 401b. of pulped mangold, 151b. of hay chaff, and 61b. of palm-nut cake and bean-flour mixed. During the experiment. Lot 1 were continued on the same food as before, but Lot 2 received 201b. to 301b. of sUage (according to their appetites) in lieu of the 401b. of mangold. The results of the three weeks of trial were as follows : LOT 1. Weight of Milk. lb. . 791i .. .. 811i .. .. 7671 .. Percentage of Cream. LOT 2. Weight of Milk. lb. .. 975 .. .. 994 .. .. 1000^ .. Percentag of Cream First week,... Second „ .... Third „ .... .... 59f .... 56 .... S6i First week.... Second „ ... Third „ ... ... S3 ... 61i ... 53} Average . .. mi .. .... 57i Average .. 989f ., ... 52| Accordingly, the average daily produce of the cows in Lot 1, that were fed on mangold, was 28^1b. of milk, or about 11-|- quarts J that of Lot 2, fed upon silage, was 35-|^lb. or 14 quarts a day, being an increase of one-fourth. The per-centage of cream, it will be seen, was less in Lot 2 ; but the total quantity of cream was greater, it being about one- seventh more than that of Lot 1. Mr Harris (p. 238) gave in a letter in the Field the follow- ing particulars of the quantity of silage eaten by young cattle in mid -winter : " I ordered six North Devon yearlings to be let out for about four or five Jiours every day in a field with other cattle, where there was nothing beyond the ordinary winter bite of grass. They had two feeds in the morniug, and two more in the evening. The ensilage was carefully weighed out every day (1801b. for the six yearlings), and each day they failed to eat the whole ; the remainder was each day set aside. At the end of the seventh day there remained 1001b. weight of ensilage. The result proves that each yearling ate some- thing less than 281b. a day. They were looking very well at the end of the week, and seemed quite satisfied with their daily rations, which will be continued in the same way as long as my ensilage lasts." Feeding Qualities of Silage. 160k Mr Jolmson says (p. 215), "For the last two montlis I have been feeding sixteen bullocks and heifers on nothing but ensilage and 61b. daily of cake and meal ; and the result is, I consider, at least a dead heat between them and similar bullocks on the same allowance of cake and meal, and turnips and hay ad lib." Mr G-. Broderick says (p. 219), " I have been feeding milk cows entirely on ensilage, and others of similar age and size entirely on hay, and I find that those on hay eat on an average 281b. per day each, and those on ensilage eat 661b. per day, and thrive better than those on hay." Mr Broderick calculates that the 281b. of hay represents 1121b. of grass, and the 661b. of silage not more than 701b. of grass, and concludes that there is a gain of over 30 per cent. The Rev. 0. H. Ford says (p. 225) that " Ensilage has not increased the quantity of milk as he expected," but that " if you calculate the cost of ensilage, it will show a favourable comparison with any other food whatever." Mr Hunting's experiment (p. 303) at first appeared likely to have a disastrous resulb ; for the cows that received 281b. a day of silage became seriously constipated in their bowels, and the milk supply fell off one half. The quantity of silage was then reduced to 141b., and 141b. of pulped turnips added, whereupon the ordinary yield of milk was brought back, vnthout being either richer or poorer. The silage given in this case appears to have been some which was pitted in a wretched condition, having been originally intended for stacking, but, owing to bad weather, it lay on the ground and was soaked by rain for several weeks, and eventually was put into the silo. The washed-out condition of this fodder will probably account for the unsatisfactory result. In Lord Londesborough's experiment, four cows were fed on a mixed diet (stated on page 307), and produced an average of nearly 2l\Vo. or about 11 quarts of milk a day. On 281b. of silage being substituted for 181b. of hay and 31b. chopped straw, the milk sUghtly increased (about ilb. or nearly half a pint a day) . Then the mangold was knocked off, 160l Silos for Fodder Crops. and more silage given witli 51b. maize meal^ and the milk increased to 2911). a day, or about 11| quarts; so that the improvement was not very considerable. The Marquis of Bute having had a sUo made on his home farm, supplied three of his tenants with silage (grass and clover) for the purpose of experiments in the feeding of their dairy cows. The details are given at page 324, but the results may be summarised here. Two cows belonging to one of the tenants were fed for a fortnight on the first of the two kinds of dietary stated below, and during the next fort- night 401b. of silage was substituted for all the turnips, and a portion of the hay and chaff, oilcake and beanmeal, the result in the daily average of milk and weekly supply of butter being as follows : DrKTAKT. Hay and chaff. Turnips. Oilcake. Beanmeal. Silage. 661b 761b 81b 91b 141b 61b 81b 401b. Peoduob. Milk. Butter. 2Jgala 61b. 3 gals 71b. Increase 20 p. cent. 17 p. cent. Two cows belonging to a second tenant had, during their second fortnight 241b. of the same silage substituted for 101b. of hay, the rest of the dietary remaining as before. The quantity of milk produced is not specified, it being merely stated that there was an increase of three pints per cow when fed on silage ; but it appears that the increase of butter amounted to about 17 per cent. The third tenant substituted 901b. of silage for 341b. of hay and 941b. of turnips, with the result of an increase of milk in the first week, and a falling off in the second. The quantities are not given j but the falling off is said to be due to the silage not having kept perfectly — which is not very surprising, seeing that a fortnight's supply had been taken out of the silo at one time. In the case of the experiment of Mr. Duncan of Benmore (p. 330), about 120 head of cattle are said to have been feeding on the pitted fodder — the Ayrshire cows getting 451b. corn (oat) silage, 341b. turnips, 51b. of draff (grains), and 61b. Feeding Qualities of Silage. 160 m of straw or chaffy witli the result ttat there was an increase in the yield of milk (quantity not stated) ; while those not giving milk were getting too fatj and the silage had to be reduced accordiagly. Both butter and milk are here said to be dehcious. Sir John F. Dillon says (p. 340) that he fed twenty-fiTS heifers on silage, with 81b. of cake and 21b. of hay per diem, and sold them out fat at the end of about nine weeks. One animal was fatted on nothing but silage and 21b. of hay daily. Capt. McBride, in an account of his experunents, laid before the County Cork Agricultural Society (p. 344), con- cludes that 201b. of silage is equal to 501b. of roots and cabbage, 21b. of straw, and 101b. of hay. Silage foe Hoeses, Sheep, &c. In America, cases of sickness and death in horses are alleged to have resulted from feeding on silage. On the other hand many persons state that they have fed their horses on silage with beneficial results. Considering the difference in the product, it is not surprising that there should be conflict- ing reports. The silage used in America is chiefly made from maize, and there apparently are greater differences of quality in it than in silage made from ordinary grass. M. Goffart says : " I can only repeat what I have said a hundred times, that badly siloed maize nourishes the animals badly, and may even become a poison for them." The brown silage described by Mr. Fry appears to be much more acceptable to horses than that which is sour j and it would seem that horses are much less fitted than cows to consume very acid food. Sheep have done very well on ensilage in several instances, one of which is described by Mn. Woods at page 267. Pigs are also reported to have thriven on it. And an American correspondent stated that he had found silage of chopped grass very beneficial to poultry. CHAPTER XL-EFFECT OF SILAGE ON BUTTER, &C. A GOOD deal has been said about tbe effect of silage on the quality of milk and butter. As far as our own experience has gone, the quality of the samples we have tasted has been excellent, the butter made in mid- winter having a richness of colour and sweetness of flavour that usually are to be found only in the produce of the summer months. And the great majority of reports we have seen are to a similar effect. Nevertheless, it is beyond question that there have been many complaints of tainted milk and butter, more especially in America, where the silage is usually of maize, and liable to become extremely alcoholic and acid if carelessly made. Groffart says : " Let a farmer show me the butter wiich his silage gives during the winter, and I shall need no other evi- dence to decide on his ability as a siloer.'^ Sir John Lawes, in the Agricultural Gazette, quoted some statements from America (see page 353) to show that the quality of the butter was inferior, and Mr. H. Woods, in reply, gave particulars from eighteen British experimentalists as to the results of their experience. Most of them spoke of an improvement in quality, or said the butter was excellent, or never better^ or that there was no deterioration, while only one said " I am not pleased with the butter, as it is always pale in colour." In this case the cows received four parts of barley-straw chaff to one part of silage, so they could not have been overdone with the latter. But, although complaints have been rife in America, the great majority of the evidence seems to be favourable, and the bad results, when details are given, are frequently seen to be the result of bad practice. Effect of Silage on Butter, SfC. I6O0 In tlie official report of the United States Department of Agricultare are about ninety retains from owners of silos, nearly all of whom report favonrahly as to the influence of silage on dairy produce. About half a dozen content them- selves with saying " No bad effects ; " " Milk sells well ; no fault found with it." But the majority are more explicit^ as will be seen by a few examples here given : Improves colour of butter, increases quantity and richness of milk, where ensilage is good. Biclier and much pleasanter to the taste ; more lite that produced from pasture. The effect on butter was as maried as in the yield of milk, making fnH as much from the same amount of milk, and being nearly as high coloured as summer butter. We have regular customers for our butter ; all said it was the best butter we ever made in the winter, and nearly as good as the best of June butter. Good ensilage produces more and better milk and cream, if fed in, connection with a proper aJbuwi/enoid ration, than I have ever been able to get from any other food. No better butter can be made with any feed I know of, except sweet young grass. The only adverse reports are as follows, and we append statements as to the character of the silage : People have complained a little of the taste of the milk and butter ; I do not tbinV it injures either. [The silage was " slightly a«id."] Cream did not make so much butter, nor were the colour and flavour equal. [The odour from the silo was " like a whisky stiTL"] Ithink, when past acertara stage of fermentation, the ensilage, although relished by the cows, has a tendency to flavour milk and butter like cabbage. When milch cows were fed without miving with other foods, there is a tendency to dry them up. When mixed with meal, they gained slightly. [The silage was " sour, apparently a vinegary acid."] One cause of taint is mentioned in the " Royal Agricultural Society's Journal " by Mr. J. Swan, who says : " If, through want of care, the milk during milking time or afterwards should be left under the influence of the smeU (of the silo, it will, of course, become impregnated with that, as it would with any other pungent odour. Since I have given strict orders on this point, there has never been the slightest flavour in Tnilk or butter." CHAPTER XII.-COST OP HAYMAKING V. ENSILAGE. It is difficult to make any general statement witL. respect to tte cost of pitting green fodder as compared with that of converting it into hay, because the cartage and other circum- stances vary considerably in different cases. As regards the coat, when the grass is unchaffed, Mr. Grant says (p. 231), " I cut and carried in 1881 five acres at 7s. 2d. per acre. In such a season, haymaking a like crop would have cost 11. per acre." Mr. G. Broderick says (p. 219), " The cost of storing green crops may be anywhere between 10s. and 20s. an acre, according to crop and circumstances j but, on the whole, I am inclined to think it is cheaper than making hay." Mr. Oakeley (p. 313) had 54 tons cut, carted, and siloed for 4Z. 8s. Sd., or Is. 7fd. per ton. As to the cost when the fodder is chopped, there are some rather wide differences. A detailed account (p. 262) of the expenditure at Tatton Park shows it to have been at the rate of nearly 2Z. 12s. an acre. In another elaborate account (p. 277), Mr. Edwards states the cost of haymaking as 11. 2s. b^d. per acre, and that of filling the silo 11. 5s. 6c?., including 8s. 6d. for interest on cost of building, &c. Mr. Basdale (p. 299) says what would cost 20s. in haymakiag would cost 24s. to cut and chaff the grass and put it in the silo. Mr. Hunting (p. 302) gives the cost of siloing 70 tons of crops as 15Z. 13s. 6d., or 4s. 6d. per ton. In the R.A.S. Journal, the expense per ton is estimated by Mr. Garrett Taylor at 9s. or 10s. ; Mr. Hoare, about 7s. ; Mr. Swan, 5s. 6d. ; Mr. Ashforth, 5s. ; Mr. Fryer, 4s. 9d. ; Mr. Gibson, 4s. 7d. ; the Duke of Sutherland, 4s. 3d. ; and Mr. C. G. Johnson, 2s. 9^. per ton. THE CHEMISTRY OE ENSILAGE.* By F. woodland TOMS, F.T.C., F-C.S. I. — Practice and Theoet. HiSTOBT acquaints us with the fact that, in times of famine, contagious diseases spring up readily and spread with unusual rapidity ; and if we be now, as scoffers suggest, suffering from " ensilage fever," our susceptibility to its attack may fairly be traced to the unhealthy and impoverished state that has been brought about by repeated failures of the food-getting processes upon which we have hitherto relied. There can be little doubt, I think, that the majority of the experiments made, or about to be made, in this country with respect to ensilage, have had their origin in a paiiiful experience of the shortcomings of the ordinary process of haymaking, rather than in any prior conviction of the innate merits of the silo. And to persons who are thus influenced there undoubtedly has come a very apposite warning in the cautions of those respected authorities, Sir J. B. Lawes and Dr. Voelcker. What we need is not merely a change, but an improvement — a, relief from ever-impending mischief ; and now, in the lull between the tentative experiments of the past and the more active opera- tions that are promised, it is fitting to sum up and review what we have learnt. It seems to me that some such summiug-up is especially desirable, because, from a want of a standard of com- parison, some persons have styled their experiments " a success,'" whereas their products, when passed through my hands, have proved distinctly inferior to others which have been described in no more glowing terms. Moreover, there have been statements made public which I either know to be wrong from my own observations, * These articles formed part of a series which appeared in the Meld, under the title of " Facts about Fodder." Others haTe treated on the chemical effects and deterioration produced hy rain during hay-making, hy fermentation in the stack, &o. The whole are about to be republished in book form. M 162 Silos for Fodder Crops. or whicli would seem to be so from tlie teacHngs of authorities of experience abroad. Our knowledge on this subject is admittedly imperfect as yet, but it is stronger in some directions than in others. To prevent experimenters wasting time on points already thoroughly thrashed out, and to lay bare the points where information is most needed, I have ventured to frame a few leading questions that appear to me to cover the ground that the agriculturist is chiefly interested in. To the best of my ability, answers will be supplied to these questions ; and on those points where the replies are weak, readers are asked to assume that information is wanted, and will be welcomed if supplied. The four test questions are : 1. Can English fodder plants really be preserved in an edible condition by burying in pits ; and for how long ? 2. Is the resulting product nutritious and advantageous to the animal ? 3. Is the method economical to the farmer ? 4. How does it compare with alternative systems, already familiar to us ? No one, I think, who has paid any attention to facts recently brought forward, will deny that, by burying green fodder in pits, it may be maintained in a remarkably good state of pre- servation for months together. The preservation is never absolute or perpetual ; but to obtain the best results it is necessary to tightly pack the green fodder into large smooth-walled silos, and to maintain the mass under a continued pressure of 1001b. or more per square foot ; and " the most energetic compression is always that which gives the best results " (Groffart's book on " Ensilage," pp. 64, 81, 87). It is not necessary to add any dry material to the green fodder ; and to add more than 10 per cent., even with a plant containing so much water as maize, is absolutely prejudicial. G-offart distinctly states that he has added straw, not to keep the ensilage good, but to render the straw eatable; and he found that, the greater the proportion of straw mixed with the green fodder, the less time would the mixture keep (p. 60). " A moist condition in ensilage," he says, " instead of being a cause of deterioration, is, on the contrary, indispensable to the good preservation of the stored materials. Maize, in its normal condition, contains about 85 per cent, of water ; and when, by The Chemistry of Ensilage. 163 the addition of dry straw, " the proportion of moisture in the mass is brought down below 75 per cent., good preservation is greatly compromised, and soon becomes impossible if you go beyond that " (G-offart, p. 61). In the Journal de V Agri- culture M. Goffart wrote as follows on this subject : " Last winter I tried four experiments in four different silos ; one silo contained pure maize, and in the other three straw was added in different proportions ; and the greater the proportion of straw mixed with the maize, the worse was the preservation." Neither should the crops be allowed to partially dry in the field before being put into the silo. " There is no middle term," says M. G-offart ; " the crop must either be thoroughly dried and stacked, or stored with all its moisture, if it is required to be converted into ensilage " (p. 72). The fodder may be siloed whilst in a damp condition; and crops have been successfully pitted when dripping with water. Among the authorities for this are M. Lecouteux, editor of the Journal d' Agriculture Pratique, the Vicomte de Chezelles, M. G-offart, M. Julien, president of Agricultural Society of Eomorantin, and various American experts, besides correspondents m The Field. The following is an instance given by M. Goffart ; " Last October my silos were filled during frightful weather ; the raia at times fell in torrents ; but the ensilage was perfect never- theless." Salt is not necessary for good preservation, though it adds flavour to the mass, and may be added in small quantities— two or three pounds to a ton, so that a cow may get an ounce or so in her daily rations (Goffart, p. 89). In America the use of salt is now abandoned as unnecessary (" Thurber on Ensilage," p. 22), and the excessive amount of salt (21b. to the hundredweight) used in some experiments in this country has been found by practical men to be hurtful, and has been condemned by veterinarians. As salt did not improve the ensilage when the fodder was pitted in good condition, so also it did not stop its spoiling when the crop was discoloured and damaged from being left till it Tvas old and beaten down (Goffart, p. 101). A very acid product is not the ideal to be worked up to in making ensilage. In the product that has undergone least change, alcohol and acids are only found in very minute quantities. To obtain the best result, the expulsion of air is necessary, and this M 2 164 Silos for Fodder Crops. is secured by heavy weighting. When thoroughly well preserved, ensilage is devoid of taste and smell on first being taken out of the pit. The following describes ensilage as it can be made by proper skill, and as it has been _ made of late years by M. Groffart. Formerly he thought fermentation in the pit was necessary, and for many years he did not obtain very successful results ; and it was the marked difference in smell and taste, under his improved method, that made the opening of this silo so noticeable. " I opened," he says, "in April, 1877, my last elliptical silo, which contained more than one hundred tons of maize, pitted in October, 1876, or more than seven months previous. It presented one very compact mass of greenish-brown tint, and the temperature did not exceed 10° C. (50° Pahr.) There was no appreciable smell, and, on being put into the mouth, the maize was at that time tasteless ; and the absence of smell and taste produced at first a sensation that was almost disagreeable. I had a few hundredweights of the mass taken out for the next meal of my beasts ; and scarcely was it exposed to contact with the air, than it under- went a veritable metamorphosis. The brownish colour became sensibly greener, and a commencement of alcoholic fermentation was not long in setting in, without, however, exceeding the limits beyond which such fermentation ought not to go. This silo was not completely emptied until the 10th of August, and the maize kept in good condition until the last day " (Groffart, p. 75). The above represents what it is desirable to get in this country, and not the intensely acid products that some experimenters have turned out. The " sour fodder " of the Germans and Hungarians, obtained by burying green food in pits with small precautions, is, there is reason to believe, very wasteful, from the fermentation being carried to excess. M. Groffart has "civilised" the primitive " sour fodder " process, and made it worthy of recognition of modern agriculturists by pointing out the advantage of weights (and well-constructed silos to permit the weights to have full effect) in reducing fermentation to a minimum, and thus preserving the food in a condition most approaching its natural state when freshly cut. Its distinctive marks are, that the temperature is kept low, and the proportion of acid and alcohol remain exceedingly small. The foregoing extracts epitomise the main features of what M. Goffart recommends, and he, be it mentioned, has made more The Chemistry of Ensilage. 165 experiments in, this direction than anyone else. He has given to the term " ensilage " a world-wide repute in connection with the storage of green fodder crops ; and I think it would be convenient as well as courteous to reserve that term for substances in which his rules are recognised. If any prefer to reject his advice, work in a crude fashion, and revert to " sour fodder," let them call it by that name, and let the merits of their concoctions be discussed apart. Many specimens of ensilage have come under my notice during the past two years, and I have observed very considerable difference between them. The difference was certainly one of degree, but I believe that degree was sufficiently wide to constitute the difference between a success and a comparative failure, economically speaking, though nearly all were eatable and free from mould. The most successful specimens — i.e., those that most resemble the freshly-cut plant — had been subjected to considerable, pressure ; the others were faulty in this respect. It seems generally admitted that, other things being equal, a crop well supplied vnth sugar is better adapted for ensilage than one less richly furnished. And it is even more certain that, working with the same material, vast differences may exist in quality of ensilage, according to the care expended in expelUng and keeping out the atmosphere. By the use of weights M. Q-offart has now, he says, no difficulty in preserving for eight months or more crops which previously he was unable to keep many weeks when he sought to hermetically seal the silo by a covering of clay. He says, too, that the waste by heating or fermentation is very greatly reduced. It has been a matter of surprise to men of science, quite as much as to farmers, that vegetation can, by such simple means as pitting, be preserved to so great an extent from the decay common to dead organised substances. Among the many more or less satis- factory explanations which have been given, that of Professor Lechartier appears to merit most attention, from, the suggestiveness of his experiments, and his high position as an authority on fermentation. By a very long series of researches on fruit, seeds, roots, and leaves, this investigator has shown that, when these substances are detached from the plants that bear them, life is not extinct in the cells of which they are composed ; and that, if maintained out 166 Silos for Fodder Crops. of contact witli the air, this life will go on for a considerable period consuming sugar, and giving rise to alcohol and carbonic acid gas. The evolution of gas slackens after a time, and finally ceases altogether. This kind of fermentation is a proof of vitality in the plant, and is distinguished from the fermentation of decay by the fact that none of the germs that favour putrefaction are found when examining the pulp microscopically. When, however, the evolution of gas stops, the cells are really dead, and, being so, are liable to very rapid destruction when in contact with the atmosphere. So long, however, as the air is excluded, and no fer- menting germs penetrate to the interior, the fruit remains dormant, and subject to no further change. Thus, Lechartier has kept pears suspended in closed jars for eight or nine months, and shown at the end of that time that they maintained their colour, and tasted merely like mellow fruit ; but, on being exposed to the air, they very quickly became " sleepy " and rotten, and the leaves soon acquired the normal appearance of dead leaves. Lechartier considers that the facts he has proved to hold good with regard to fruit, seeds, and leaves kept out of contact with the oxygen of the air, find their analogy in green fodder placed under pressure in pits. He has made miniature silos with glass bell-jars containing fodder pressed down by a wooden disc weighted with lead, and so arranged that he could, from time to time, extract the gas for analysis ; and he has also sealed up fodders in flasks, and compared their composition before and after fermentation. He shows that the first action that takes place is the complete absorption of the oxygen in the residual air of the pit — ^which doubtless is the cause of the brief heating observed when a silo is being filled. During the first week or two (a period varying somewhat according to the composition of the crop, atmospheric conditions, and mode of pitting) there occurs a free evolution of- carbonic acid gas, which is succeeded by a greatly diminished outflow lasting over several months. So long as this continues, the fodder remains in a state of good preservation ; and, with liberal weighting, a very small evolution of gas is capable of resisting the pernicious tendency of the atmosphere to penetrate into the interior. The rate of disengagement of this gas, and therefore, its efficiency as a preservative, may be gathered from the following figures,, obtained with Lechartier's miniature silo. It wiU be evident that- The Chemistry of Ensilage. 167 heavy -weiglits are even more requisite at the end of the experiment than at the beginning : Hourly per Idlogramme. 12th of November — Gaa disoharged 37'7 cubic centimfetres. 22ud 25th 6th of December 28th From Feb. 21 to March 1 14-1 5-4 5-2 2-7 0-25 On the 1st of March there was no gas ; the cells had lost all activity, and mould may therefore he afterwards expected to appear on the surface, and decay begin to prey upon the ensilage. If I understand Lechartier aright, he contends that, while the vegetable cells are still alive, they will not grow mouldy and decay. That, when severed from the living plant, each constituent cell possesses a certain vitaUty in itself, or power of doing work ; and that it cannot be considered dead till it has expended that power. That, in the presence of air, the cells live and act with considerable energy, and exhaust their powers early. Out of contact with air, however, they live more sluggishly, and take a far longer time to con- sume the same amount of sugar ; indeed, the process becomes so slow that the sugar is not all consumed when the silo is opened. This is proved by the analyses of Barral, Lechartier, and myself, and by the heating and formation of alcohol that takes place on exposure to air. The vital energy being longer in expending itself, the time is postponed when the moulds and other parasites can begin to prey on, the dead residue, and set up their characteristic and generally offensive fermentations. The above, though it sounds somewhat theoretical, is not without experimental proof, for Lechartier has found that the vital action, which will go on for months in a properly-weighted silo, does actually cease in a very few days if air be drawn through the ensilage. Perfect fruit and undamaged leaves, kept out of contact with air, furnish us, one would think, with " ensilage " under theoreti- cally perfect conditions ; yet even here some loss of substance and considerable modifications in the constituents of the fruit occur ; and loss of substance is in the same way inevitable to ensilage, even when made in the best constructed silo. It is the price one must pay for the vitality that enables the ensilage to resist putrefaction. How slight this loss may be reduced to we do not know with 168 Silos for Fodder Crops. precision, for no conclusive experiments have been made con- trasting the weight and composition of that put into a silo with the weight and the composition of that which was taken out. This is to be regretted, for it deprives us of the best way of ascertaining the economic value of the method. We do possess, however, comparative analyses of ensilage made by wasteful methods, and these will be produced in the next article. They teach a useful lesson to those who adopt such methods, and show, on a magnified scale, the changes that go on. The losses that occur are due to fermentation, which may vary very greatly in extent in the same substance according to the way in which it is pitted ; and, as the fermentation varies, the loss will naturally vary .in a corresponding degree. M. Barral, who is a chemist as well as permanent secretary of the National Agricultural Society of Prance, mentions that maize ensilage, pitted in three different silos, possessed temperatures respectively of 46°, 16°, and 10° C. (116°, 60°, and 50° Pahr.), and the degree of acidity was respectively equivalent to '792, '644, and '099 per cent, of sulphuric acid. He says, " It is the maize that has been maintained in the silo at the lowest temperature that contains by far the least acid. It is that one which, in my opinion, has been preserved in a state most resembling maize at the time it was cut." Deductions that are true of one specimen of ensilage, made in one kind of silo, are, however, not necessarily true with respect to that which is made in a different way ; but at several of the agricultural colleges in this country and in America the professors are working at this subject experimentally, and we may hope shortly to obtain some statistical results. !!.■ — ^The Nttteitivb Value of Ensilage. English experience of ensilage is relatively small as yet; but, taking into account France, America, and Germany, ample facts exist to warrant the assertion that all English green crops can be preserved in a condition but little removed from their natural state, by storing them in silos under heavy weights. In England successful results — though not all equal in success — have been obtained with meadow grass, rye grass, clover of different kinds, green oats, green rye, and vetches. In America, Commis- sioner Loring, of the Grovernment Department of Agriculture, reports (as the results of inquiries circulated among the farmers The Chemistry of Ensilage. 169 of tlie United States) ttat, in addition to Indian corn — which is so high in favour from the immense crops it yields per acre — the ensilage system has been tried on rye, oats, clover, sorghum, rowen, Hungarian grass, and field peas. " In fact, almost every crop used for soiling has been stored in silos and taken out in good condition." In Prance, a commission appointed by the National Society of Agriculture speak of good results obtained by thus storing vine leaves in wine-growing districts, apple refuse in cider districts, beetroot leaves, sliced beetroot, and beetroot pulp, in sugar-making districts. M. Groffart, besides maize, rye, various kinds of clover and trefoil, has put into his silos, with more or less success, Jeru- salem artichokes, beetroot, comfrey, and potatoes. M. Pornay, of Eomorantin, has for some years practised the ensilage of lucerne with success, and was awarded a silver medal for an excellent sample that he exhibited at the Bourges Agricultural Show ; and M. Julien, the President of the Eomorantin Agricultural Society, names (with other crops already alluded to) rape and buckwheat as suitable subjects for the silo. Lastly, in G-ermany, cabbages, turnips, and leaves of various kinds, besides ordinary fodder crops, are said to have been stored on much the same principle. The above facts ought to show that we are here dealing with a law of very wide application, and that contemplated experiments wUl be by no means the risky speculation that some persons believe. In future, therefore, if the general principle be assailed, the onus of proof should surely in fairness fall upon the objectors, and, where facts are adduced, they should be subjected to rigid cross-examination with a view to ascertain whether the results complained of have arisen from a disregard of rules laid down as essential to success, or whether there is any defect in the rules themselves. An afiirmative reply having been given to the question whether English crops can be successfully preserved in silos, we may pass on with awakening confidence to the consideration of the second query to be answered, viz., " Is the resulting product nutritious and beneficial to the animal ? " The nutritious qualities of ensilage, like those of hay, must of course mainly depend on the substance from which it is made. Ensilage from very inferior fodder may possibly be more palatable than the same material made into hay ; but one cannot expect it to 170 Silos for Fodder Crops. be as valuable as ensilage made from a crop of high nutritive quality. The farmer will notice, too, that there will frequently be a considerable difference in odour and appearance between different species of siloed fodder, even when prepared in exactly similar fashion. Judging from experience so far, ensilage from fine rather dry herbage is far more pleasant to smell and to look at than the ensilage from the coarse grasses of low-lying damp^ localities. Over and above this difference, due to constituents, the value of ensilage is modified by the mode of curing. Fermen- tation, in a greater or less degree, is inseparable from ensilage;, and such fodder, therefore, is characterised by containing small quantities of alcohol, and acetic and other organic acids. It does not appear that in small quantities they do any harm ; indeed, they seem to be beneficial rather than otherwise, and they prove so- attractive that many animals will renounce green grass, hay, meal, and other good foods, to feed on the ensilage. Some, indeed, regard the silo as a kind of factory for the preparation of cattle condiments. Experimenters of this class should recollect that they run a risk of using up good feeding constituents to produce these " spices," and should therefore endeavour to stifle the change till the silo is opened, when a short exposure will produce all the alteration necessary. It is not probable that any of our ordinary English fodder crops, even if inefficiently stored, will develope as much acidity as beetroot and starch refuse, or even so much as maize ensilage sometimes produces ; and as such food is tolerated by cattle, we need hardly disturb ourselves on the score of acidity in our own specimens. Even if it should prove excessive, it can always be neutralised by a little powdered chalk being mingled with it after taking it out of the silo. Still, the acetic fermentation should be resisted as much as possible, for such fermentation signifies the consumption of material that is more useful than the resulting product ; besides which, the latter is the forerunner of an objectionable fermen- tation called butyric. By this latter acid a very unpleasant odour is given to the mass ; and, although cattle can even put up with this in small quantities, yet they recoil from it in the end, and fall off in their feed. M. Groffart met with this objectionable kind of fer- mentation in some of his earlier experiments. It arose when he attempted to store crops that had been beaten down and become yellow and decayed at the foot. He finally succeeded in rendering The Qhemistry of Ensilage. 171 eatable even such crops as these, hut he had to double or treble the weights, and the product resembled the " brown hay " of the G-ermans rather than that kind of- ensilage in which M. Goffart delights. The Americans, who generally seem to have followed Groffart's directions very closely, appear to have been singularly fortunate in their experiences ; for Commissioner Loring, of the U.S. Depart- ment of Agriculture, sums up the results obtained by nearly one hundred farmers, who have reported to him, in these words : " The condition of stock fed on ensilage, both as to health and gain in weight, has been uniformly favourable." This refers not only to maize ensilage, but also to the many other green crops they have experimented on. Considering that the Americans are themselves only novices, this speaks much for the simplicity of the process, and is an encouraging testimony of what we may ourselves expect. I have read carefully through these 100 American reports, and have watched for some time past the opinions expressed in American, French, and German periodicals ; and, considering the ordinary tendency of mankind to grumble, and the natural liability to fail when trying a new process, I have been fairly astonished at the small amount of complaint from those who have tried the process and can speak from their own personal experience. It seems to be taken for granted among users of ensilage that the /forage is improved, rather than deteriorated, by a slight alcoholic fermentation ; and this is what M. Goffart aimed at when he first commenced working. He soon found, however, that, in the- silo, the fermentation is apt to overstep the mark and degenerate into acetic and lactic fermentation, which are to be avoided, because they are wasteful, and finally into butyric fermentation and putre- faction, which is, of course, positively objectionable. Consequently, as Goffart found it impossible to hit off the happy mean in the silo, he now strives to stifle fermentation entirely, so long as the fodder remains there. He finds he can readily obtain the desired amount of fermentation by a few hours' free exposure to the air previous to feeding. To show the views of Goffart on this point, the following extract may be cited : " If it were necessary to sacrifice the fermentation in order to avoid the loss of materials which is undergone in siIos„ I should prefer to undergo that loss, because I attach the highest, value to fermentation, the good effects of which are indisputable i 172 Silos for Fodder Crops. but, fortunately, the two points can be easily reconciled. Tlie benefits of fermentation are these : Thanks to fermentation, the siloed materials undergo a commencement of decomposition which facilitates the digestion and increases the nutritive or assimilatiye power. My beasts, especially the 'milch cows, when they live exclusively on fresh maize during the summer, consume it in very large quantities, and always have the belly greatly developed — which proves that their food has not all the richness desirable, and that they are obliged to make up for the deficiency of quality by excessive consumption. If my beasts eat siloed and fermented maize, the belly decreases, and their ration (which they themselves limit) diminishes in weight, and their general state becomes more satisfactory. Let us, then, not attempt to suppress fermentation, but only to regulate it." Fermentation always has the result of producing new substances at the expense of existing constituents ; and as some of these new substances are gaseous, fermentation always implies a certain loss in weight. If animals digested and converted to useful purposes the whole of the food they receive into their system, then undoubtedly loss in weight .would be an unmixed evil ; and if, again, the loss fell on -the easily-digested parts, and left the other constituents untouched, then this would make matters even worse. But luckily (and this is a most important matter) we have evidence to prove that such is not the effect of fermentation on well-made ensilage. There the loss which occurs falls most markedly on the substances that possess the smallest feeding value. Owing, as I believe, to the action of the water present, fermentation does not produce precisely the same effect upon ensilage as upon hay. Fermented hay shows an increase of woody fibre over prime hay, whereas fermented ensilage has commonly a much smaller percentage of fibre than the substance from which it is made. Fermentation apparently acts in a very thorough manner upon ensilage ; it not only converts sugar into alcohol, and acetic and other acids, but it also converts the starchlike bodies into saccharine substances, and reduces insoluble woody fibre into soluble bodies somewhat allied to starch. Sugar, starch, digestible and indigestible fibre, have chemically all the same percentage composition ; but the last is of small feeding value, and is even actively injurious, for it may encase round sub- ^stances ;thai are in themselves very easy to assimilate, and thus The Chemistry of Ensilage. 17a prevent tteir being acted on by tte digestive powers of the animal. Commissioner Loring says : " There are indications that some materials have their value enhanced by. the fermentation of the silo, while in others there is a loss ; " and I think, when we shall have tested this question more thoroughly, that the value will be found to be most enhanced in substances containing a considerable amount of indigestible matter. The constituents of grain are naturally digested by the animal with very considerable completeness. If, therefore, we attempt to ferment them, we shall find — as Sir J. B. Lawes showed in the case of malted barley — that the slight improvement in digestibility produced is more than overbalanced by the loss in weight. Such results, however, are not on the same footing with coarser foods, as grass for instance ; for here a very considerable amount of indi- gestible and rejected matter exists, and a loss of weight which would be wasteful with grain, might turn out a good investment as regards grass, from the greater scope for improvement that is possible. Prom the following table it will be seen that, with inferior hay, the animal may not assimilate one half of what is given him. Could we but manage to mate one pound of this poor hay go as far as an equivalent weight of young pasture grass, we could apparently submit to any amount of loss short of one-fourth, and stiU obtain a balance of profit. Proportion of each constituent digested by the animal out of 100 parts supplied. Description of Food. Of organic matter as a whole. Of alhu- menoids. Of fat. Of soluble carbo- hydrates. Of fibre. per cent. 621 51-7 46-3 90-9 per cent. 68-8 64-3 58-4 77-6 per cent. 13-4 23-5 18-8 68-0 per cent. 65-8 56-9 51-7 93-9 per cent. 57-0 Meadow hay (very good) Meadow hay (ordinary) Maize (aoaked grain) 42-6 37-3 100-0 The above are the results of actual experiments carried out on a horse by Professor von Wolff, the grass used being cut at various times from the same field. It will be seen that the animal never succeeded in digesting the theoretical amount even of the soluble compounds present ; and it would appear that the great obstacle that prevented this was the fibre. There was nearly double as much 174 Silos for Fodder Crops. woody fibre in the oldest hay as was contained in the younger specimen ; and it would, of course, be more consolidated and resis- tant. When the animal was fed' on soaked maize — which contains scarce a tenth of the fibre contained in hay — the digestion of the various constituents immediately became very complete indeed. In the same way I believe that if the woody fibre of grasses can be rendered soluble or disintegrated, not only will a larger proportion of it be digested, but other substances previously locked up will be more readily acted on. An experiment which can only be explained on some such principle as the above, is one by Professor Henry, of the Agricul- tural Department of the Wisconsin State University, already referred to in the Field. Two equ.al lots of maize (21,0001b.) from the same field were converted, one into hay, the other into ensilage. Two months afterwards two cows were fed on the siloed maize, and two others on the dried fodder which had been under cover ever since it was well cured. At the end of twenty-one days the food of the cows was changed, and those fed on ensilage before were now fed on dried fodder, and vice versa. During this test each cow, whether on ensilage or dried fodder, received lib. of Indian corn meal, lib. of wheat bran, a,nd l-J^lb. of oil meal, morning and evening. Each cow had as much ensilage or dried fodder as she could eat up clean. The cows were fed, watered, and milked at the same hour each day, and every means were used to make the test complete and fair. The results in milk, and in butter churned therefrom, were : Milk. Butter, lb. oz. lb. oz. Ensilage (with meal as stated) produced 1456 8 59 8i Dried fodder (with same meal) produced 1322 15 53 3i Increase produced from ensilage 133 9 6 5 The test continued forty-two days. At the rate the food was consumed, the thirteen rows of maize cut into fodder would have lasted forty-eight days, while the thirteen rows made into ensilage would have lasted 67| days. Thus the ensilage increased the pro- duce of milk 10 per cent., and the butter 12 per cent., showing that the butter-making quality of the milk was also enhanced. Lastly, the proportion of maize consumed as ensilage was 29 per cent, less than that eaten as hay. Another observation, equally difiicult to explain away, is con- tributed by Mr. 0. B. Potter, to the American Cultivator. A field The Chemistry of Ensilage. 175 of pearl millet had inadvertently been allowed to attain so large and hard a growth that the cows wholly rejected the stalks, and would eat nothing but the leaves when the millet was offered to them green. By way of experiment, one-fourth of the crop was cut and put into a silo, the remainder of the field being cured by drying in shocks in the ordinary way. This last was found so nearly worthless for feeding dry that it was used for litter in the barn- yards and for covering ice in an icehouse ; whereas that which was preserved in the pit was opened and fed in April. The cows ate it aU, leaf and stalk, eagerly, without any loss or waste, and, Mr. Potter says, it was fully equal in value to the same quantity of the best maize fodder preserved in the pits. The following experiment by Colonel Le G-rand B. Cannon, of Burlington, Vermont, U.S., is interesting, because maize ensilage is contrasted with an approximately equal amount, reckoned dry, of ordinary hay and also of hay and roots. I say " approximately," because the actual proportion of ensilage was rather under than over the mark; for average hay contains about 15 per cent, of water, so that 201b. of hay would have about 171b. of dry matter, and the average proportion of water in maize ensilage is said to be about 82 or 83 per cent., so that the quantity of dry matter in the ensilage given to these beasts would probably weigh about 151b. Colonel Cannon says : " I fed ninety three-year-old steers, divided into three lots ; cattle and feed weighed monthly. First Lot. — Fed 201b. hay with 31b. grain daily, run in yard with shelter. Second Lot. — Kept in warm stable and stanchions, fed 17|lb. hay, one peck mangolds, and 31b. grain. Third ioi.— Fed 851b. ensilage, with 31b. grain. This lot gained fib. a day more than No. 2, and |lb. more than Lot. 1. The cost was 5 per cent, in favour of ensilage." The feeding was kept up for five months and a half, and Colonel Oannon adds : " The cattle fed as stated were in better health and condition than others fed on the chopped hay and grain. I consider ensilage profitable, and believe it entirely healthy, taking the place of roots. It is easily digested, as is shown by the uniform temperature of the animals and the condition of the skin and hair." Details of an extensive series of experiments by Prof. McBryde, of Tennessee University, are given in Dr. Thurber's book on " Silos and Ensilage." Unfortunately, he worked on single animals only, 176 Silos for Fodder Crops. and lie puts the ensilage at a great disadvantage by comparing together 201b. best hay (about 171b. dry matter) with 401b. maize ensilage (about 71b. dry matter). Considering, too, that green maize is far poorer in albumenoids or flesh-formers than ordinary grass, it is not surprising that the 201b. of hay frequently showed better results than the 401b. maize ensilage. It is only when the tables are turned that one has cause for astonishment ; and the following are cases in point. These experiments extended over one month ; and the last is especially noteworthy as showing that clover ensilage is far better than maize ensilage : The animal Daily Rations per 10001b. live weight. gained per cent. 2OII1. hay (taken a3 a standard) I'Slb. 101b. ,, 201b. oat straw, B^^lb. Indian corn meal 3'9 101b. „ 201b. ensilage, 6ilb. „ 7-2 201b. oat straw, 201b. ensilage, 6ilb. „ 6-6 201b. bay, B^lb. Indian corn meal 5'7 201b. ,, 6ilb. cotton seed meal 5'6 201b. ,, 6ilb rice corn meal 7'5 401b. ensilage, 6ilb. Indian corn meal 10"2 401b. ,, 6ilb. cotton seed meal lO'l 401b. ,, 651b. rice corn meal 2'8 51b. hay, 641b. corn meal, 401b. maize ensilage 6"25 51b. „ 6ilb. ,, 401b. clover ensilage 9-03 Of the value of ensilage for dairy purposes the evidence is remarkably strong. Commissioner Loring sums up the hundred reports sent to him in the words : " Ensilage has been fed to milch cows more generally than any other class of stock, and no unfavour- able results are recorded. There can be no doubt its greatest value will always be found in this connection. There is a marked increase in quantity and improvement in quality of milk and butter after changing from dry feed to ensilage, corresponding with the effect of a similar change to fresh pastui-e. A few seeming exceptions are noted, which will probably find explanation in defects easily remedied rather than such as are inherent." In illustration of this good effect on milk production it is not necessary to go so far as America, as a very admirable example has been furnished us at home by Mr. Henry Woods, in his account of the experiment on Lord Walsingham's estate. The experiment was carried out by feeding five cows on a fixed quantity of crushed oats and bran (61b. of the former and 31b. of latter), with as much as they could eat of coarse fodder, which consisted first of The Chemistry of Ensilage. 177 chaff (composed of two-thirds barley straw, and one-third hay), and afterwards of the same chafi mixed with gradually increasing quantities of grass ensilage. As Mr. Woods' table is published at a subsequent page, it will suffice to quote the amount of milk and cream obtained on the last day of each series : Milk. Oream. Quarts. Degrees. All chaff (of hay and barley straw) yielded per day 68 12 One- third ensilage and two-thirds chaff , 70 13 One-half ensilage and one-half chaff „ 71 15 Two-thirds ensilage and one -third chaff „ 77 16 Three-fourths ensilage and one-fourth chaff „ 82 16 This ensilage was made from grass of exceptionally coarse and poor quality, yet as soon as it was given to the cows the flow of milk increased ; and there was a continued gradual increase with the augmented proportions of ensilage allowed, till at the end of one month's experiment the result differed from that obtained at the beginning by 14 quarts of milk per day, or an increase of more than 20 per cent. And on two of the cows being deprived of the ensilage for a couple of days, they each gave three quarts of milk less per day. It is even more noteworthy that the quality of the milk was also greatly improved, as shown by the increased amount of cream. This milk from cows fed on ensilage, when compared with that of other animals fed in a similar way, but without the ensilage, showed a percentage of 3'11 of milk fat, as against 2'76 ; of sugar, casein, and albumen 9*82, as against 9'87 ; and of ash 0'75, as against 0"70 per cent. In a word, the ensilage-milk was superior in every respect. The above facts are quoted because they are statistical results obtained by actual analysis, and therefore are of much greater value than any indefinite statement teeming with adjectives. They suggest, too, the kind of experiments that may advan- tageously be carried out during the extended trial which the system wiU probably undergo before long in this country. So far, the evidence speaks well of the tendency of the silo to produce food which is beneficial to the animal; and it indicates that, relatively to other methods of preserving fodder, ensilage turns out food of good quality. This view, as will hereafter be shown, is also supported by an examination of known chemical facts; and, inasmuch as these have their bearing on the cost at which the advantages are obtained, they will help us to work out N 178 Silos for Fodder Crops. replies to the questions wMcli will confront us : " Is tlie process economical, all things considered ? " and " How does it compare with other methods already familiar to us ? " III. — The Loss by Febmbntation. The main conditions for successfully mating ensilage are, as we have seen, simple and few. Nevertheless a feeling is abroad that if it be already so simple, it might be made simpler still ; and many who, a few months ago, would deny the possibihty of preserving crops in the green condition in any way whatever, are now developing a tendency to complain of the labour of putting on weights, or of the necessity of making a receptacle at all. The number who think thus are, it is to be devoutly hoped, small, for they are dangerous disciples. Ensilage, let us never forget, though new to us, is very old in itself, and there is little which we are likely to devise during our noviciate that has not been tried before ; so that it is scarcely too much to say that what is not recommended may reasonably be presumed to have failed. At any rate, it will be far wiser to fuUy avail ourselves of the experience of workers on this process abroad, and to turn neither to the right nor the left in the conditions so simple yet so important that they lay down, than it will be to venture on unknown paths in search of improvements. First let us endeavour to do as well as our teachers are doing ; improvements may be attempted afterwards. To make good ensilage, it is necessary, not only to prevent air getting in, but to drive out aU air that is already inclosed in the mass. The only practicable way of doing this on the large scale is energetic compression. The early experimenters started without weights, but, finding their importance, have little by little increased them ; so that, if we begin with small weights, we shall be simply retrograding, not advancing. In the same way they began with holes in the earth, and now prefer well-built silos. Silos of masomy or wood are useful, because they facihtate the practical working of the process. They are easier to fill and to empty, are cleaner and more permanent, and in short, more convenient. They can also be made watertight, which doubtless is an advantage ; but, best of all, they have smooth and regular sides, so that the mass slips down the walls without much friction, and thus the mass becomes com- The Chemistry of Ensilage. 179 pressed with little effort. So far as the preservation of the food is concerned, large and smooth-walled silos are, to my mind, mainly useful as economisers of weight. One can make, it appears, as good ensilage in an earthen pit as in the most expensive silo ; but far greater weights must be used to produce the result, for the mass clings to the irregular sides with obstinacy, and is difficult to com- press. It is, under any circumstances, necessary to put the heaviest weights round the edge of the silo ; the centre will almost take care of itself. Ensilage has been made, I am well aware, without any artificial weights being placed on the top : but this does not rebut the advisabiUty of having recourse to weights — for in such cases the whole contents of the pit are not well preserved, but only the lower parts that are compressed by the mass above. The upper part and sides, which are not compressed, are generally mouldy and of little value ; while even the preserved parts show, by their high acidity, that they would have been much improved if weights had been used. On the score of preservation, deep silos are obviously more to be recommended than shallow ones, and, owing to the smaller surface, less weight is necessary on the whole mass. For the process to be economical, we must save the top and sides as well as the kernel ; and it is to preserve these outer parts that weights are required. G-offart now manages, it is said, to keep the top and sides of his silos almost entirely free from mould, whereas formerly the loss used to amount to 15 per cent, or more. Mouldiness is a form of waste that every farmer can understand ; but there is another variety of waste which also exists, but which it is most difficult to make apparent, because it is not obvious to the eye. It does not occur to him that solid matter can "evaporate" and pass off into the air, even from those portions which he con- siders to be of good quality. If freshly cut plants containing one ton of sohd matter be buried in a pit, under no circumstances is it possible that a ton would be taken out ; but the more perfectly the air is excluded, the nearer to a ton the mass will weigh. An experiment conducted by Professor Moser, of the Agricul- tural Experimental Station at Vienna, illustrates this fact in a very forcible way. He buried^ bundles of maize No. 1, of known weight (6000 grammes) at depths of 17in. and 34in., in the centre of the contents of a " grube " or earthen silo familiar to that country, also another lot of maize No. 2, and when the siloes were opened he N 2 180 Silos for Fodder Crops. re--v7eig]ied these bundles and ascertained the loss of each con- stituent of the fodder. The following give the absolute -weight ia grammes obtained from each bundle : Fresh Maize No. 1. Ensilage 17in. deep. Ensilage 34in. deep. Fresh Maize No. 2. Ensilage No. 2. Water 4761 54-0 45-6 649-2 400-2 37-8 52-2 1215-5 39-0 39-6 350-4 386-5 40-0 39-0 2846 36-5 39-0 273-5 379-0 37-0 44-0 4603-2 58-8 55-2 734-4 462-0 38-4 48-0 3886-4 Albnmenoids Fat Soluble carbo-hydrates Fibre 38-6 53-5 326-8 404-0 Ash 39-5 70-3 Sand Total solid matter, dry 1239-0 894-5 809-0 1396-8 932-7 In Hungary the method for preparing "sour fodder," as they call it, is to dig a long trench in the ground, and fill in the fodder, not only up to the level, but far above it, and then to cover the whole over with earth. There is a constant tendency, under these circum- stances, for the earth to crack round the sides, and air gets in accordingly. Considering, too, that the French and Americans, ■with their more perfect silos and heavier compression, still consider it necessary to cut up a large-stalked plant like maize into half or quarter-inch lengths, it is not surprising that Professor Moser met with such a wasteful result when using a bundle of imchopped maize. Another German experiment is that by Professor Weiske, on sainfoin. The first half of this table shows the composition of the dry matter in fresh sainfoin, as compared with an equal weight of dry matter in ensilage made from the same sainfoin ; and it might be assumed, from a hasty glance at the two sets of figures, that there is a considerable increase in some of the constituents ; and, although some loss is obvious in others, yet there is nothing to indicate that the total is any way diminished. This is owing to the fact that, although you know the weight of the ensilage as taken out of the pit, you do not know what the fodder weighed when it was put in. The second half of the table supplies this deficiency, for it shows the weight of the dry matter in the fresh fodder on being put into the silo, and the weight of what remained, when it was taken out in the form of ensilage. The Chemistry of Bnsilage. 181 Composition of 100 parts of dry matter in 1001b. of the dry matter of the fresh fodder yielded When As taken put in out of silo. silo. Gain or Loss. Albumeuoids Pat 18-56 2-89 38-60 33-93 6-02 20-44 6-02 30-88 35-18 7-48 18-56 2-89 38-60 33-93 6-02 15-53 4-57 23-47 26-74 5-50 — 3-03 + 1-68 SoluHe carbo-hydrates Pibre — 15-13 — 7-19 Ash — 0-52 100-00 100-00 100-00 75-81 Here it -will be seen that, although the fat is apparently increased, there is, on the -w^hole, a loss of 24 per cent, of dry matter in the ensilage; and the right-hand column will show in what way the loss is apportioned. This table marks ia a very instructive manner the importance of comparing ensilage with its equivalent of the green stiofE it was made from, instead of tating equal weights of each, as is usually done. If ensilage prove a failure, this is the direction in which its defects must be looked for ; and from a consideration of analyses hke the above, I am convinced of Groff art's wisdom in insisting on heavy weights. It must be borne in mind that none of the foregoing analyses apply to well-made ensilage — at any rate, to the extent there set down — since heavy weighting did not form a feature of the experiments quoted. They therefore mainly apply to those who refuse to recognise the importance of great pressure. M. G-offart asserts, and M. Barral, the chemist, supports him, that the above is by no means a fair representation of what takes place in weU-made ensilage ; and M. Grandeau, another eminent French chemist, shows by the following comparative analyses of fresh and siloed maize from M. Groffart's farm at Burtin, that the amount of alteration is relatively small : Maize. Water. Sugar. Albume- noids. Soluble carbo- hydrates. rat. Fibre. Ash. Acid. Natural state ... Ensilage 81-28 81-28 0-58 0-15 1-22 1-24 10-41 9-58 0-25 0-36 4-98 4-91 1-29 2-25 0-00 0-23 Prom a study of the above analyses it will be evident that, whether the loss in ensilage be great or small, it always is in 182 Silos for Fodder Crops. the same direction ; that is to say, it always falls heaviest on the members of the closely-aUied group — the sugars, starches, and cellulose (fibre or cell- substance). As a good deal of the starch and a portion of the cellulose are destroyed to produce successively sugar, -alcohol, carbonic acid, and, if air be present, acetic acid and lactic acid also, the nitrogenous substances, being more stable bodies, appear by contrast to rise in amount. The ash receives a similar apparent increase, as well as an actual increase, frequently, from dirt or added salt. The fat is the only normal constituent that can be regarded as increased in larger absolute amount after pitting; it appears to be formed, or something like it, by the changes undergone during fermentation. The tendency of fermentation to break down and render soluble the fibre of the pitted food is a most valuable feature in ensilage. Comparative analyses by G-randeau and by Lechartier ; the results obtained by Dr. Cameron, with the Irish rye-grass experiments ; Mr. Sutton's analyses of Lord Walsingham's ensilage — all show this property of prolonged fermentation. The object of digestion is to convert food into a condition that is soluble in the juices of the body ; and that portion of the substance which cannot be so dissolved is not only useless but objectionable, as having a tendency to exhaust the animal by labour in vain. It further hinders the digestion of substances that are very nutritious in themselves, by encasing them round, as is seen with seeds, which frequently pass unaltered through the animal, whereas, if crushed or husked, they would be very valuable food. The experiments of M. G-randeau and Mr. Sutton indicate that there is more soluble matter in ensilage than there is in the dried or green fodder — reckoning, of course, pound for pound of the dry matter in each. Whether it is always so, when we compare grass or hay -with the weight of ensilage that would have been produced if these had been put in the pit, is the great unsettled question, around which turns the whole economical value of the process. The view, then, that I take of the ensilage process is this — That those who feel inclined to shirk in any way the imposition of the weights necessary to compression -will be ill-advised in trying the process at all ; for, economically, it is not likely that their endeavours -will prove profitable in the long run. They may see distinctly enough the mouldiness or putrescence that is upon the surface, and may estimate its amount as compared with the mass The Chemistry of Ensilage. 183 of apparently sound food tliat is in the pit ; but it will be well for them to bear in mind that they only observe a portion of the mischief, and this may represent but a minor part of the actual waste, if regard be paid to the loss which has been going on in unseen parts of the silo, in consequence of a defective mode of carrying out the process. If, however, the fermentation be skilfuUy controlled, there appears to be no reason why the improvement in quality brought about in the mechanical condition of the food may not more than compensate for the loss in quantity, considering the very large margin of undigested matter which coarse fodders contain. Ensilage, has, moreover, the advantage, of saving labour, and of being independent of the weather ; and these two are in themselves sufficient to counterbalance a considerable amount of the loss that takes place in the silo. Of the profitableness of ensilage in the United States, Commissioner Loring's report says, " Not a doubt exists, certainly not a dissenting opinion ; " but, of course, a large amount of this unanimity lies in the fact that American farmers can grow a cheap crop like maize, and store it up as they never could do before. It is much to be hoped that those who make experiments on ensilage will, for the benefit of their fellow agriculturists, keep records of the cost and results of their trials ; and, if they do go so far as to have analyses made, let them always endeavour to make them comparative, either by sending hay made from forage cut at the same time, or by having a sample of fresh_ grass analysed at the time when it is put in the silo. Whether ensilage be for our good, or be harmful, it is alike needful that we should quickly know its real nature ; and a deep debt of gratitude will be owing to those pioneers who test it. IV. — Ensilage veestjs Hat. When the ensilage discussion assumed very great prominence, in the autumn of 1882, it fell to my lot to analyse a number of samples of this novel feeding material, and when the subject had for the time exhausted itself, I took the opportunity of reviewing the pros and cons of the matter, so far as I felt warranted by my own experiments or those of investigators in countries where the process was well known. 184 Silos for Fodder Crops. The year that has passed (1883) has not been characterised by the same discrepancies in practice and opinion, and there is conse- quently less excuse for critical observations. Nevertheless, ensilage is still in its infancy ; and it may be of service to many who intend to experimentalise during the coming season to have put before them certain points that probably 'will be rather outside their own particular line of observation. Oertain fallacies to be found in estimates of the cost, value, yield per acre, and comparative feeding merits of ensilage, practical men may be relied on to detect for themselves ; but there are many points connected with the chemistry of the question which, though really of practical im- portance, the majority of agriculturists most certainly do not appreciate. In a previous article on the " Chemistry of the Silo " it was pointed out that " if freshly-cut plants, containing one ton of solid matter be buried in a pit, under no circumstances is it possible that a ton will be taken out ; but the more perfectly the air is excluded the nearer to a ton the mass will weigh." This statement, which is at variance with what is said by some enthusiastic admirers of ensilage, is borne out by every comparative analysis that has been made, and can easily be proved by anyone who cares to embed deep down in the centre of his silo a weighed quantity of grass, and re-weigh it at the end of the experiment. A sack (waterproofed, if possible, to prevent juice gravitating to bottom of pit, but so arranged that the contained air could be well pressed out at the mouth of sack) would, if fiUed with grass, be a convenient method of testing this point, which is important as concerning the economic value of the process. There are several points of practice bearing on this question of loss, which have been recommended, but which, from a chemical point of view, seem unadvisable, as calculated to render this loss of weight unnecessarily large. One of these is adding chopped straw or chafE to the fresh fodder when placing it in the pit. Grofiart found, from comparative experiment, that the more straw he added, the worse the ensilage kept. A recent experiment of Dr. Marcker, director of the Grovernment experimental station at Munich,* seems to place this beyond dispute. He experimented on siloed beet residues, and the following table will show the per- * Abstracted in Biedermann's Central-Blatt fwr Agricultur-Chemie,FehTn»,Ty, 1883. The Chemistry of Bnsilage. 186 centage of loss on the fresh substance, by burying it in a silo with and without an admixture of straw : Loss on portion ■Without Btraw. With Btraw. Increased loss by addition of Btraw. Freali substance Dry organic subatanoe Fat Fibre .' Nitrogenous substances .... Non-nitrogenous substances Per cent. 19-3 21-8 + 60-0 10-0 9-1 28-8 Per cent. 23-5 29-0 + 15-7 23-6 24-6 32-6 Per cent. 4-2 7-2 13-6 15-5 3-8 Another cause of excessive loss in a silo is very probably due to attempts to drain it. It must almost necessarily facilitate the admission of air, and it allows of the escape of juice. The following analyses I have made of two specimens of ensilage liquor, and of juice expressed from fresh grass, will show that this is far too valuable to be lost : I. Ensilage liquor, amber brown colour, pleasant alcoholic odour, fermenting and giving off carbonic acid gas freely. Con- tained 5'17 per cent, solid matter, of which 0'98 per cent, was mineral matter rich in phosphates. It contained 0'688 per cent, of glucose. II. Ensilage liquor, fermentation evidently progressed further than in last. No sugar. Acidity equal to 0'6 per cent, acetic acid. Contained 5'47 per cent, of solid matter, of which 1'39 per cent, was mineral salts. III. Juice of fresh grass contained 7-02 per cent, of solid matter, of which 2 '02 per cent, was mineral matter, and 2 '08 per cent, sugar, calculated as glucose. The above analyses wiU gain point if we call to mind that fresh grass only contains about thirty per cent, of solid matter, of which about two per cent, consists of mineral matter. Considering, too, that matter in solution is always m.ore easy to assimilate than soUd matter that has first to be rendered soluble, it is obvious that it must be wasteful to allow this juice to leat away, or to voluntarily squeeze it out from the fresh grass, as has been suggested. Professor Marcker, in the paper above referred to on the preservation of beetroot refuse from sugar works, gives instances 186 Silos for Fodder Crops. of the loss incurred with this substance, as shown by the amount first put in being contrasted with that afterwards taken out, and poiats out that the greatest loss occurs in porous unwalled pits, and that to obtain the best results, air-tight and water-tight cemented silos are desirable. The figures he gives are very startling, and it is to be hoped that they do not hold equally good of grass and English fodder crops ; but it is certainly desirable that comparative experiments of a similar kind should be made to ascertain what are the facts. Undoubtedly they show the direction of the change that goes on in all sOos, although it may differ in degree, and the results are, there- fore, most instructive. The experiments were conducted at different experimental farms, except 4, 6, 6, and 7, which were all carried out at one farm, and exhibit the result of a bad system of procedure. The decimals have, for convenience of reference, been omitted. •g §■3 Loss per cent, of Loss incurred on 100 parts of each ol the dry organic constituents present in the food. l5 Original undrled sub- stance. Dry matter. Fat. Wood fibre. Nitro- genous sub- stances. Non-nitro- genous sub- stances. 1 13 20 23 + 105 9 11 31 2 9 44 46 + 140 45 37 49 3 3 18 13 —1 13 11 14 4 4* 55 45 —32 40 35 49 5 4i 45 45 —44 40 28 49 6 4* 47 27 + 26 14 4 35 7 4i 62 54 —52 52 37 56 8 8J 23 36 —23 36 31 32 9 8 19 21 + 60 10 9 28 10 6 1 17 32 —8 31 40 30 Meai 35 34 + 17 —29 —24 —38 The word "loss," as employed in the above table, and in all previous remarks, does not refer to damaged or moulded ensilage, involving a virtual waste of so much food, if unfit for consumption, but to an actual loss or dissipation of solid matter. As has been shown by the experiments of Lechartier (quoted on p. 167), and which I have myself been able to confirm by analysis of air drawn from the heart of a freshly opened silo, some of the solid matter of The Chemistry of JEnsilage. 187 ensilage is constantly " evaporating " away, as it were, in the form of carbonic acid gas, nitrogen, &c. Tlie loss falls heaviest on the carbo-hydrates, such as starch and sugar and cellulose ; conse- quently, pound for pound, ensilage may appear more nitrogenous, and therefore a more meat-producing food after storing than before. Unless, however, the ensilage is purchased, it is necessary to bear in mind that, even if the quality is improved, the quantity is decreased. Moreover, even the nitrogenous substances by no means escape without loss. A portion disappears entirely, a further portion becomes changed from albnmenoid substances, of great value as flesh-formers, into substances probably akin to ammonia, which are chiefly of value as stimulants, and can only replace albumenoids in food to a limited extent. Professor Kinch, of Cirencester, recently pointed out an instance where the per- centage of true albumenoids had diminished 50 per cent, from this cause. The increase, too, which appears under the head of " fat " is chiefly due to butyric and other acids formed by fermen- tation, which chance to be extractable by the same procedure as the true fat. It is therefore probably a fictitious increase, so far as true fatty bodies are concerned. It is from considerations such as these that chemists are apt to regard the ensilage process with suspicion, unless feeding experiments or some tangible practical data accompany the results of the operation. Whenever chemical action takes place, changes in temperature are produced ; and an accurate determination of the temperature inside a silo will serve as a measure of the amount of change going on, and the circumstances under which these changes are most active. Not many data of this description are accessible, and som^ of those that have been published over here give temperatures so much higher than those of skilled experimenters abroad as to suggest that the ensilage was not of the best and most economical description. The Ontario Experimental Farm (which, under the able direction of Mr. W. Brown, has been doing some 'exceedingly good, work of late) undertook, in their silo experiments, to keep a record throughout of the maximum and minimum temperature in various parts of the silo. They seem to be the most elaborate that have yet been published, and are worthy of careful attention. The rather regrettable discrepancies to which attention is here drawn by an asterisk mark are probably only printer's or clerical errors. 188 Silos for Fodder Crops. Temperature inside the Silo. Mean temperature } ] } } Top. Centre. Bottom. outside. (■Highest 71° 92° 65° ) 1st week ^ Lowest 63 89 64 ^ 52' "(Mean 67 91 65 (•Highest 67 91 65 2nd week ^ Lowest 53 86 63 f 40 (Mean 51 88 64 (•Highest 62 88 64 3rd week ^ Lowest 53 86 63 ^ 42 (.Mean 55 87 63 (•Highest 59 93 68 4th week ^ Lowest 58 92 67 )■ 41 (.Mean 58 92 67 (•Highest 64 89 66 •) 5th week ^ Lowest 57 79 64 [ 39 (Mean 60 84 60* ) (■Highest 56 87 67 ") 6th week ^ Lowest 46 81 64 [ 25 (Mean 52 84 62* ) (•Highest 56 84 66 ) 7th week ^ Lowest 54 78 63 i 43 (Mean 55 81 64 ) Last week 73 — 26 Average for whole period... 58 87 61* Stress has been laid, in the previous pages, •upon the insidio-us " evaporative " or fermentation loss that goes on in silos, mainly because it has been overlooked by so many other -WTiters, ■while farmers in general either disregard it entirely or look upon any shrinkage in -weight as though it -were merely due to loss of •water. It is time they should clearly understand that the solid constituent originally built up out of the carbonic acid in the air is resolved back into this gas by fermentation. There is more fermentation in the silo than ordinarily takes place in hay- making, and consequently there is (independently of loss of water) a greater loss of weight of solid matter in the silo than usually occurs in the hayrich. I think that if farmers once fairly grapple •with these facts — checking them, if they can, by experiments of their own — the views of many enthusiasts on ensilage will have to be moderated, and especially those who advocate the adoption of whatever seems cheapest and least troublesome. * Those figures marked with the asterisk are given as in the original ; but there is evidently some error, as the mean is stated to he less than the lowest ; and in the last line, applicable to the whole period, the temperature at the bottom is several degrees less than the average of the figures given above. The Ghemistry of Unsilage. 18& The dark brown, aromatic smelling ensilage, produced when con- siderable heating tates place in the fermenting mass, shows this loss in the highest degree, because the high temperature can only be produced by consumption of the fodder. Being commonly dry and hay-like, keeping well out of the pit, such ensilage is usually in highest favour. Prom an economic point of view, however, the green, fresh substance, obtainable by care and heavy pressure, ia far preferable. It is distinguished by little smell or taste when taken out of the pit, and the temperature is low. Mr. Grant's ensilage may be mentioned as an excellent specimen of this class, as is the Vicomte de Chezelles' of the brown variety. Some dis- tinctive marks in composition will be seen on reference to analyses given on page 232. It is for the practical man to determine ta what extent this loss is permissible. If good ensilage can be made where the hay crop would be a failure ; if it can be prepared at a considerable saving in labour and expense ; or, if for dairy or other special purposes it is better adapted to a farmer's require- ments than hay or roots — then a moderate amount of waste may not be incompatible with even an ultimate profit. To solve this difficult matter one requires, above all, an accurately carried out and strictly comparative series of feeding experiments. Moreover, the meat or milk producing power of the competing foods should not be reckoned on the ton of food supplied, but should be calctdated back, if possible, to the yield per ton of fresh produce ia each case, or to the yield per acre. We should then be working with fairly definite quantities. Even accurately conducted experiments, as above suggested, would not necessarily settle the question absolutely, for this reason r Ensilage, when once we know the most economic mode of preparation,, can apparently always be reproduced of very similar quality ; whereas with hay, tmless we have a substitute sun in the form of a hay-dryer, there must necessarily be vast difference in quality,, according to the nature of the weather at the time of harvesting. Hence ensilage should not be judged in comparison with the best hay, but with the average of hays as we get them on contrasting one year with another. On the other hand, unfavourable weather, or a desire to obtaui a heavy crop, causes grass cutting for hay to be delayed till the grass is over-ripe and stemmy, whereas ensilage is usually made from grass at the time of early bloom, and it is scarcely fair to compare hay made from over-ripened grass with ensilage made from less aged and more nutritious material. 190 Silos for Fodder Crops. The best hay suffers little loss of nutriment in dryiag. By artificial heat in the laboratory one can even so contrive that it loses none whatever ; but even in practice it does not exceed 2 or 3 per cent, of sohd' matter under favourable circumstances. Care- fully conducted experiments on the feeding value of fresh grass as compared with hay made from the same grass at the same period of growth, do not confirm the popular view as to the great loss of digestibility produced by the mere operation of drying. Practical farmers are apt to overlook the fact that the statements of men of science are backed up by experiments expressly carried out with the view to secure exact conditions of equality, whereas the farmer's belief is for the most part based on the circumstance that cattle are found to thrive better on young and succulent pasture than when fed upon hay made, not at the time of the grass being young and succulent, but at a much later stage of growth. They are, in fact, comparing incomparables. In this way it is impossible to ascertain the real effect of drying, for the percentage of digestible matter, which may amount to 75 per cent, in the one condition, is sometimes reduced 50 per cent, as the grass increases in age. One may, moreover, when the weather is unfavourable, lose one-tenth or more of the total constituents of the hay before it is stacked (as was shown in an article of this series pubUshed in the Field of Sept. 16, 1882), and this portion, too (as was illus- trated in the same article by some striking feeding experiments, carried out by Dr. Voelcker), may contain so large a proportion of the nutritious part of the hay that the residue left is almost valueless as food, and, though taken in. unUmited quantities, the animals fed on it may actually lose weight instead of putting on fat. Of course this apphes with equal force to ensilage, if the crop, after cutting, has been left long exposed to the vicissitudes of the weather, before being put into the silo. An instance of this kind occurred at the South Hetton silo, where the crop, when originally cut, had been intended to be stacked, but, owing to the rain, it lay on the ground from the beginning to the end of September, and eventually was put into the silo. The result was that, when the silo was opened, and the cows were fed upon such washed-out residues, they became constipated and lost condition, so that it was found necessary to reduce the amount of ensilage and give other food to remedy the evil. In addition to rain, that washes out the bone-forming phosphates, The Chemistry of Ensilage. 191 and readily-digested sugars, &c., hay suffers at times considerable loss by fermentation in the stack. The following is an analysis of two portions of hay, taken out of the same rick. The one was Ught yeUow, and of moderate quaUty; the other of a coffee-coloured brown, with a pungent odour, characteristic of aldehyde, an organic substance intermediate in composition between alcohol and acetic acid. By immersing in cold water some of this hay fresh from the stack, and gently warming the distillate therefrom with ammonia- nitrate of silver, I was enabled to obtain a silver mirror on the side of the glass test-tube — a reaction confirmatory of the presence of aldehyde. Aldehyde is only formed when oxydation has taken place in a limited or iasufiicient supply of air or oxygen, and consequently shows that change was goiag on ia this portion of the rick greater than the current of air produced by a powerful fan and engine could keep up with. Analysis of Two Samples op Hat i-kom the same Eiok. The original snb stance of the two samples contained respectively per cent. : A. Yellowish Hay. JB. Brown or Fermented Hay. Water Undried. 15-20 10-31 1-84 1-60 13-47 23-02 26-97 7-59 Dried at 212° P. 12-06 2-17 1-89 15-88 27-25 31-80 8-95 Undried. 12-80 10-51 3-71 4-69 9-03 21-61 29-43 8-22 Dried at 212° P. 12-05 4-26 5-38 10-36 24-77 33-75 9-43 Ether extract (fatty matter) . . . Sugar and sugar-forming sub- stances (starch-like sub- stances, &o.) Other non-nitrogeneons extrac- tives Fibre Mineral matter (ash) 100-00 100-00 100-00 100-00 * Containing nitrogen per cent. 1-62 1-90 1-66 1-90 It is noticeable that the loss in the fermented hay fell chiefly on those carbohydrates that are convertible into sugars ; and further examination showed, that it was the starch-hke substances (insoluble in cold water) that most suffered ; for, whilst the yellow hay contained 12-46 per cent, of starchy bodies, the dried brown hay contained but 3'42 per cent. Of glucose (one of the true sugars) the yellow hay contained S^ per cent., but the dark fermented hay scarcely any. Instead, it 192 Silos for Fodder Crops. contained some products of decomposition, doubtless akiii to dextrin, whicli, by boiling -with weak sulpburio acid, produced the same effect on Febling's sugar test as 7 per cent, of glucose. Ensilage commonly shows a loss of sugar similar to this brown hay ; but unless the original fodder was exceedingly poor in carbohydrates, or the fermentation is carried further than is at all necessary, I have not found that the sugar entirely disappears.* The facts regarding brown hay being of practical importance, from the fancy that some farmers exhibit for such fermented or "heated " hay, an attempt was made to ascertain the total amount of organic substance thus lost. As it was of course impossible to obtain any of the fresh grass from which the above hays were made, an excellent specimen of green hay from an adjoining rick, made from the same field and at the same time, was also examined. It was found to possess only 8'3 per cent, of " ash " or mineral salts ; and as this would be a constant quantity, the presence of 9'43 per cent, of " ash " in the fermented hay made it evident that this apparent rise was occasioned by a loss of organic substance equal to 13 per cent, of the whole dry matter. The indigestible fibre was likewise 29 per cent, in the greenish sample of good quality, as contrasted with 33 '75 in the brown sample, or an increase of 16 per cent., thus showing that the loss by fermentation in the case of hay falls chiefly on the most nutritious constituents and renders the final product less digestible. The Neilson system of haymaking, whereby the hay is stacked damp, and the air drawn from, the centre of the rick by an exhaust fan, depends for its success on the heat given out during fermenta- tion. One is, in fact, burning up one part of the hay to dry the other. As pointed out by me in the Haymaking articles of this series, this is a defect in principle that is open to grave objections. The yellow and brown samples above mentioned were taken from a Neilson rick, the green was sun-dried in the ordinary way. In order to prove conclusively that organic matter is dissipated by this process, it appears of interest, not only to examine the hay, but the products that were being drawn out by the fan. If the carbonic acid, nitrogen, organic acids, &c., thus given off be collected, it would be found to fully account for the actual loss estimated by analysing the hay. It is not, of course, possible to * A substance was here classed as a sugar if it reduced the PehKng sugar test, was soluble in alcohol, and was not precipitated by a solution of acetate of lead. The Chemistry of Ensilage. 193 go quite so far as this with a haystack ; but Dr Percy Frankland, experimenting on small quantities of grass, has shown that, in the presence of air, oxygen is absorbed and large amounts of carbonic acid evolved. Nitrogen is also liberated from fermenting grass, showing a destruction of albumenoids. Small quantities of hydrogen and other combustible gases were evolved at the same time. I have myself had the good fortune to procure from a ISTeilson stack three samples of water that had condensed in the fan-box outside the rick. The liquids, in addition to a small amount of waxy matter (probably mechanically carried out of hay by the steam), contained also minute quantities of acetic acid and alcohol. One thus sees not only that soUd matter disappears, but in what fashion it may escape into the atmosphere : Alcohol. Acetic Acid. Oct. 16. Water condensed from steam drawn by exhaust fan out of a rick of meadow grass, recently stacked in a green and dripping wet condition, contained per cent. .. . trace ... O'Ol Nov. 1. Water from same stack. Temperature of rick, 150° to 160° Pahr. ; ditto of exhanst tube in centre of rick, 135° Fahr. ; vacuum, 221b. per square foot 0-21 ... 021 Nov. 10. Water from same rick. Temperature, 155° to 170° Fahr. ; ditto of exhaust tube, 140° Fahr. ; vacuum, 221b. per square foot 0-08 ... 0-31 From the above facts it will be evident that neither ensilage nor hay can be in any way held up as a perfect process ; but, as the good points of the one often come out most conspicuously under circumstances when its competitor is at its worst, it will probably be found most difficult to frame any conclusion likely to be universally applicable. Many of those who experimented last year with ensilage seemed abundantly satisfied when they turned out a something that was not a mass of corruption, but a substance that animals relished and throve on. Prom this point of view, the year's experiments have certainly been most successful. Having had the opportunity of inspecting some couple of score of specimens sent at various times to the Field, I can speak with confidence of the large proportion of excellent samples produced, and the very small percentage of failures. These experiments also confirm all previous warnings as to the advantages of heavy weights and well-constructed silos. It is to be hoped that the experiments of the coming season will not only show that ensilage is easy to make, but will answer the questions. What does it cost, and what is it worth ? APPENDIX. THE SILO OF THE VIOOMTE DE OHEZELLES. [This silo — ^wHoh is, we believe, the largest single silo in the world — was first brought to the notice of English readers by an article in the Field, aooom- panied by a woodcut, here reproduced. Mr. H. Kains-Jackson has returned to the subject on several occasions ; and from his various articles we make the following selections.] By the courtesy of M. le Vicomte de Chezelles, I am enabled to give the following particulars as to his large and practical working of the system : Under date, July 31, 1882, the Viscount writes me, from near Ohaumont-en- Vesin, Oise, that harvest work is in full swing on his estate, and so he has time to send only an account of the principal features of his mode of ensilage. A large photograph accompanies the letter, and the illustration given is on a reduced scale, but sufficiently indicates the construction of the sUo. M. de ChezeUes writes : " I cut aU sorts of forage with one of Wood's mowers, and five men follow the machine to load the carts, which at once convey the crop to the sUo, vrhere a powerful chaff-cutter cuts up the forage as fast as three men can feed it, whilst two other men unload the carts. The above ten men work together, being paid by the job, their wages being commonly about 8s. per hectare (about 2i acres), the pay varying according to the nature of the crop. " I so arrange the number of carts and horses, reckoning the distances of the fields from the silo, that there may be a continuous supply furnished to the chaff-cutter, which should work on without interruption, as by this means the ensilage is made regularly and economically in a very few days. As a matter of fact, in this way I have cut, carried, and formed into ensilage the produce of about 170 acres of trifolium, sainfoin, lucerne, tares, and artificial grasses. " For the silo two men are wanted to level and stow the cut forage as it falls from the chaff-cutter. Twice a day a couple of bullocks or horses are driven over the ensilage, so that it may be trodden down evenly. This work is better done by animals than by men. An occasional sprinkle of salt gives a savour that animals appreciate. " My sUo is 72 yards long by 6^ yards wide, and 4^ yards high. It is desirable to raise the layers of forage a yard above the top level of the * The articles in this Appendix are mostly reprinted, in a more or less con- densed form, from the Field, or have been specially written for this book. When quotations are made from other publications, the name of the paper is given. o 2 196 Silos for Fodder Crops. silo, and this quantity above the surface is inclosed with boarding. By- shrinkage and settlement the ensilage soon sinks to the pit level. Directly the silo is full, I at once have it covered as soon as possible with a bed of earth about a foot thick, and the forage is then left for some three months, to become ripe for feeding of stock. " For two years I have now successfully fed all my farm animals, con- sisting of 20 horses, 36 buUocks, 120 milch cows, 1000 to 1200 sheep and lambs, with this ensilage, mixed with straw and roots ; in the feeding of horses 1 mix carrots or potatoes with the forage. All the stock have been kept in thriving condition — indeed, they have been wonderfully well whilst fed on this green food stored in pits." One of the first impressions in reading the above letter was that the scale — nearly 200 acres of crops being saved — brings the subject at once under practical agriculture ; and next that horses can be fed with as much advantage as cows upon ensilage. Hitherto I had regarded the process as more interesting to dairymen than to ordinary farmers. Lastly, in point of expense, reckoning lOd. to Is. 3d. per ton for reaping, carrying, and cutting (the chaff-cutter should be driven by a steam engine), makes the system the most economical of any. I have just visited (October, 1882), probably the largest silo in Europe — that of the Viscount Arthur de Ohezelles, of Chateau Boulleaume, Oise, France. It is really a fine yet most economical structure — an excellent barn and perfect silo ; a great oblong shed, roofed with tiles, 72 yards long, 6^ yards wide, 4J yards high from the ground level — an immense cover for the cereal crops of a large farm. The floor is sunk some 12ft., and is paved and drained. The side walls and one end wall are lined with rough stones set in mortar, whilst the front is partly walled up, and a wide door allows the entrance of trucks on rails to come and be filled. This great basement suggested comparison with the hold of a big ship ; and in it at present is stowed away the produce of 170 acres of various sorts of forage — cut, carried, and made into green chafE last July — which fills the whole space, excepting where a remnant of last year's ensilage occupies some 16ft. at one end. The forage was cut by English mowing machines ; five men followed them and loaded into carts, which delivered the green stufE at the side of the silo, upon the carriers of a powerful " Albaret " chafE-cutting machine, two men unloading and three men feeding; so that ten men were employed, and these were paid 8s. to 16s. per hectare (2| acres), accord- ing as the crops were light or heavy. The whole business was so arranged in relays that the work went on uninterruptedly, and the chafE-cutter, driven by 7 h.p. engine, poured out a green stream of food that, like water, soon became level through being trimmed and stowed by a couple of workmen. Twice a day bullocks' (here much used for farm work) walked over the mass and gave it compactness. A little salt was Vicomte de Chezelles' Silo. 197 -occasionally sprinkled on the layers, more to give the fodder an appetising flavour than for any other purpose. When, in a few days, the silo was filled — swallowing up all and whatever the farm could give it — the forage was covered up, without any layer of straw or boards, by a stratum of the light sandy soil, some foot and a half thick. Naturally the mass subsided under the weight of earth, and became nicely compressed, but scarcely more than is hay in a large stack. At this period, to all intents and purposes, the superstructure became and looked simply a great shed with a nice even sandy floor ; just the place to invite the reception of the cereal crops which — wheat, oats, and some barley — were ripening in the fields. In a short time, from floor to the -angles of the roof, the building was filled. I fancy there are not three farmers in England who would have had as much faith as had the proprietor of this estate, when he confided the produce of 170 acres of land to this great pit in such conditions ; but two years' previous experiments gave confidence, and a large and valuable bulk of property was left in the full expectation that for this coming winter a wholesome and nutritious store of animal food would be available for his stock. That such expectation was fairly fulfilled I went to see for myself. Previous to my arrival at Liancourt St. Pierre, I had received a letter from M. Georges, the manager of the farm, to say that, owing to the abundance of green keep still in the fields, the opening of the silo would be postponed untU November. However, upon the day I had come to see the actual opening, the sUo, by the courtesy of the Vicomte, was opened, and on the 12th of October, 1882, I had for the first time a block of new ensilage in my hands. I took it at once to a yoke of Charolaise oxen that happened to be within a short distance, looking, with the great cart loaded with beetroot pulp, a picture from out the canvas of Rosa Bonheur. These bullocks took the ensilage, eating it with relish, as a horse takes a mouthful of hay from the hands. All doubt as to the food being freely taken was therefore at an end. To reach the ensilage, a load or two of the super- imposed com had to be removed ; next the stratum of earth was shovelled aside, and the brown-black mass of ensilage below was laid bare. Without the loss of a minute I jumped down into the pit, thrust my hands between the substance with some difficulty, from its compressed state, and found the temperature decidedly high, certainly of blood heat, whilst a smell rather agreeable than otherwise, such as comes from breweries — sweet, alcoholic, and condimental — made itself observed. The heat gave no apprehension, and was not considered objectionable, previous years' experiments proving such condition was unattended by danger. Without further delay, I took, as a geologist takes a f ossU. specimen from a freshly cut rock-section, three samples of the new ensilage, and a fourth sample of the old (1881) stock, and placed them in separate tin cases, which were only closed with string, since I feared to have them soldered down on .account of possible difficulties with the Custom House authorities. The work so far was complete, and the opening of the silo that Thursday 198 Silos for Fodder Crops. afternoon was a success; the food stored there was good provender for the coming winter. The instance, in this pi-esent case, is all the more notable, because, whilst different experimentalists have advocated various plans as to method of covering, necessary weight, time and manner of opening, and divers details, here there was an absence of all niceties ; here was a working example that all practical farmers could easily follow. Simplicity, efficiency, and economy were the characteristics of the silo-work at Chateau "BouUeaume. I next put forward a supposed difficulty — namely: that the bulk of ensilage, from which a portion was cut away, must on each occasion be protected afresh, and such portion taken away must be consumed in twenty-four hours, or it would become worthless. Nothing of the sort was to be feared, as I was told, from the experience of last season. The ensUage is simply cut away as wanted, just as a few trusses of hay would be cut from an ordinary stack. After a lapse of eighteen days, one of the samples on view in the Corn Exchange, Mark-lane, on Mr. Gripper's stand, retains sweetness and savour, as many visitors attested. An analysis has been made, and why it was not made before was told the readers of the Field — our Custom House sentinels stopped and challenged the new visitor I had sent to England, and thought he was " tobacco " in disguise. Invicta. Analysis op Vioomte de Ohezelles' Ensilage. The following tabular statement represents the percentage composition of the samples of fodder, consisting of tref oU, lucerne, tares, and grass, cured on the ensilage system by the Vicomte de Chezelles. Volatile Matter : Water 50-30 percent. Free acetic acid 1-20 „ Alcohol 1-80 „ Solid Matter : Albumenoids* 9-12 ,, Ammonia 0-06 „ Fatty matter 2'07 Soluble carbo-hydrates : Sugar (maltose) 2'94 Starch and digestible cellulose . , . ' 2-23 Pectous substances (gum, mucilage, &c.)... 10'32 15-49 Insoluble carbo-hydrates (fibre) 14'35 Mineral matter (ash) 5-01 * Containing nitrogen, 1'44 per cent. The following represents the composition of the substance (when dry) contrasted with two samples of dry lucerne analysed by Dr. Von Wolff, of the Hohenheim Imperial Experimental Station, Germany. The first sample was dried with care on a bam floor ; the other (a poi-tion from the same crop) was dried in the field in the ordinary way. During the first two of the four days to which the latter sample was exposed to the Vicomte de Ohezelles' Silo. 199 atmosphere, it became subjected to the action of a slight shower of rain and to a thunderstorm : t;, ., Carefully-dried Field-dried Ensilage. Lucerne. Lucerne. Albumenoids 18-35 17-00 14-94 Fibre 28-87 31-81 33-90 Fat Soluble Carbo-bydrates, I g ^g.gO ^.^^ and Aloohol (if any) J Asb 11-29 7-39 .6-94 The above figures so clearly show the high feeding value of this sample of ensilage, that they may be allowed to speak for themselves. I wish only to point out that, contrary to generally accepted opinion, my experi- ments led me to believe that the sugar formed by the fermentation of ensilage is not " grape sugar " or " glucose," but sugar of malt, or " maltose." The acetic acid, although of course indicative of the loss of nutritious feeding material, is probably not without value as a condiment. Its amount in the above sample is much less thau in the specimen of highly fermented hay, the analysis of which was given in my " Chemical Investigation of Hays " (The Field, Oct. 14, 1882). F. Woodland Toms, F.O.S. 7, Busby-place, Camden-road, London, Nov. 2, 1882. [A careful botanical examination of the above sample of ensilage after- wards showed that, although various crops, as already stated, were stored in the silo, they were by no means equally distributed, and that the sample analysed consisted mainly of clover (Trifolium pratense), -with a small admixture of barley and some of the common grasses, such as Alopecurus pratensis, Agrostis albus, Bromus mollis, &c., all cut up into chafE before being put into the pit.] Statement of Cost op Vicomte de Chezblles' Silo. I give below the detailed cost of the silo at Chateau BouUeaume, Oise, France, the particulars and figures being copied from a statement affixed in the Paris Show at the Paris Exhibition of Ensilage, made by Vicomte Arthur de Ohezelles, and appended to drawings and photographs : Silo of 1475 tona capacity, suitable for containing the produce of 250 acres of forage, costing 2fr. 70o. for each ton, or 3989fr. 48o., say sterling ^6160 Fr. ct. Excavating and carting earth (1368-80 metres), at 65c. ... 889 72 Concrete for foundations and floor 86 40 Masons' work, 4fr. the m^tre — 435-56 metres 1742 24 Cartage of stones (dug out from the estate), lime, and sand, 2fr. the mfetre 871 12 Wood around the pit, 5 ateres, at 60fr 300 Fixings of iron, and Eoman cement 100 Fr. 3989 48 ^160 200 Silos for Fodder Crops. Bakn STTPEKSTKTJCTTjKii;, to shelter about 20,000 sheaves : Fr. ot. Elm posts, 11-865, at 86fr. the cubic m^tre 1008 52 Woodwork of Norwegian pine 2050 43 Carpenter's labour 750 Bolts and nails 400 Blacksmith's work 180 75 Tiles and laths 1629 Laying tiles 235 6253 70 Total cost Fr. 10,243 18 say ^6410 Estimate for a silo that would hold the produce of 125 acres, and with- out superstructure, 801. Specification for BriLDiNG a Chezelles' Silo. In the specification of the " Chezelles Shed and Silo," the plan is simply- reduced in size from the large one previously given, in order to make it suitable to most English farmers. As will be readily seen, the eaves could easily be extended, and the sides inclosed, so as to form a roomy stable or dairy and cow shed at very small cost. This building conmiends itself as economical and adaptable to most farm purposes. Sheo for grain STRAW &c -IS.oFt—- Chbzelles' Silo and Grain Shed. SPECiriCATiON OF WoEKS required to be done in the erection of a grain shed and of a silo for storage of grass, clover, and other green forage. Excavator. — Excavate to a depth of 9ft. and cart away the soil excavated to such place as shall be directed. The earth in the founda- Vicomte de Chezelles' Silo. 201 tion is to be well rammed down, so as to form a solid level flooring, in a natural bed, and not made up of loose earth. Sand, if found, is to be allowed for by the contractor. Bricklayer, &c. — Build in Flemish bond the walls and piers, as shown, of best hard well-burnt grey stocks, laid in good cement composed of one part of approved cement and three of clean sharp sand, with footiugs composed of four courses of brickwork. Lay the bottom of the pit with concrete 1ft. in depth, with a layer of asphalte lin. in thickness on top. Form a drain in the asphalte, and concrete through the centre of the pit the entire length, with a fall from either side of the walls, and a fall of 6in. from the centre towards each end. Provide and lay a damp course, consisting of two courses of unbroken slates, laid, breaking join in cement above footings. Carpenter and Joiner. — Timbers are to be supplied and fixed of the following scantlings, well seasoned, free from large or dead knots, decay and all other imperfections : Tie beam Sin. by 2in. ; kiag post. Gin. by 4in. ; common rafter, Sin. by l^in. ; struts, 4in. by 2in. ; ridge plate. Sin. by 2jin. ; purlins, 4ui. by 4iii. ; principal rafters. Sin. by Sin. Uprights (posts). Bin. by 6in., are to be placed at distances of 8ft. apart, and to be tenoned into waU-plate as shown. An oak wall-plate to be provided and fixed, size Sin. by Sin., to run entire length of wall. Slater. — Slate the whole roof, as shown, with sound Bangor Countess slating, on, fir laths, and fixed with galvanised nails. Provide and fix a slate ridge. Founder and Smith. — ^Provide and fix a cast-iron ogee eaves gutter on each side of building, with a fall towards two cast-iron rain-water pipes at either end, as shown. Provide iron ties where shown. General Bemarhs. — The whole of the work is to be carried out and finished completely from the time that it is commenced, without stoppage (through the fault of the contractor), and in case anything may have been omitted in this specification, that may or may not be shown in the drawing that is absolutely necessary for the stability of the erection, the same shall be executed by the contractor on written authority being given him. Inticta. € MM \h Iz; o I H H H H B Appendix. 203 MR. COPLEY'S SILO AT EAST COWTON, YORKSHIRE. [Me. Thos. Easdalb, dating from the Pepper Arden Hall Estate Office, East Cowton, Northallerton, wrote several letters on this subject in the FielA of December, 1882, and January, 1883, the particulars of which we here bring together.] The preservation of green food for the use of cattle during winter having engaged a considerable amount of public attention for some time past, I feel silre that many of your readers will be interested to learn that a most successful experiment has been carried out close to this place by a neighbour of mine, who cordially permits the leading facts to be stated. They are as follows : Some time in the early part of 1882, a copy of Mr. Bailey's (American) book on ensilage came to hand, which, after a careful perusal, was sub- jected to a searching discussion, in which it was my privilege to join. After all the pros and cons were well thrashed out, it was decided that a thorough trial should be given to the system so eloquently advocated by Mr. Bailey. It was also resolved that to this trial all possible intelligence should be appKed, and that no reasonable trouble or expense should be spared. The silo-7-the plan of which is a simple oblong, 12ft. in length, 7ft. wide, and 8ft. deep — was built during the month of June and early part of July, and was filled with grass during the latter part of August and beginning of September. After sufficient additions had been made to the contents and the arrangements for compressing the grass were carefully adjusted, the whole thing was closed up on the 14th of September. It was the intention at that time that the silo should not be opened until Christmas ; but a friend, who was deeply interested in the experiment, called on the 25th of November, and would hear of nothing else but that the pit should be opened while he was here. My neighbour having con- sented, the thing was done ; the result being — even to those of us who were believers throughout — a most agreeable surprise. The whole mass of ensilage was found to be in a perfect state of preservation, and gave forth a most pleasant aroma not easily described. The cattle, on the first day of being offered it, were, as was expected, rather dainty, but on the second day took it eagerly, and by the end of the first week they had become as fond of it as they are of the best oilcake — in fact, they now eat it ravenously. Both milk and butter have increased in quantity during the short time the cows have been fed with ensilage ; while the quality of milk, butter, and cream continues all that can be desired. The quantity of ensilage given to each cow per day is about 451b. weighty plus the ordinary rations of the usual feeding meals or cake. 204 Silos for Fodder Crops. Chopping the grass was dispensed with. A man with a horse and cart followed two scythes ; he forked the grass into the cart from the swath, and from this cart the grass was again simply forJied into the silo. My letter on this subject having brought forth very numerous inquiries from all parts of the country, including Scotland and Ireland, I have endeavoured as far as possible to cover the various questions put. 1. Kind of grass used. — Commenced with ordinary grass from roadside ; then some of a stalky nature, and finished with strong aftermath. 2. State of grass when put in silo. — Some dry, other portions wet with dew, and other portions partially wet with rain. 3. How put in ? — Thrown in with a fork, then shaken out, in order as far as possible to maintain a level surface ; and the grass well trodden down. 4. How much put in at each filling. — Two feet depth, when trodden solid, 6. Use of the weighting apparatus. ^Aitev each filling, the planks and weights were put on with the greatest care. 6. Kiiid of weights. — The weights were the same throughout the whole operation — viz., wooden boxes, 12in. square and 15in. high. They were filled with puddled clay, and weighed 1001b. each. The boxes are placed close together, and always so as to cover the junctions of planks, but without any idea of their excluding air by overlapping or otherwise. 7. Covering boards. — One inch and a quarter thick ; their length equals the breadth of silo. 8. Straw between planlcs and grass. — No straw or any other material was placed between the grass and the covering planks. 9. Hoiv long between each filling. — Three days, with the weights on; 10. Amount of sinhage. — Not yet exactly ascertained, but probably a little more than one-half ; or, in other words, 14ft. was put in, and the depth of the ensilage now is 6ft. 4in. 11. Foreign substances mixed with grass. — Prom 141b. to 161b. of common salt was supplied to each filling, but no other substance of any kind was added to the grass. Whether the salt is actually necessary remains to be seen : and next year one silo will be filled without it. 12. If airtight and how ? — No means other than the weighting apparatus were used to make the silo airtight ; nor was any attempt made in any way to hermetically close it. 13. How is air excluded ? — By compression only. 14. Heating. — Not the slightest appearance of heating has been at any time observable in the mass. 15. Chopping of material. — This was dispensed with, because it would save labour and implements, and was considered unnecessary. We cannot think that any loss of space is occasioned thereby. 16. How long closed ? — The silo was closed for two months and eleven days. East Cowton Silo. 206 17. Colour of ensilage. — The colour of ensilage when taken out of silo was a "pale yeUow green." 18. Sow much removed at once ? — Just sufficient for a day's consump- tion is taken out of the silo at once, and no change of colour or smell has been noticed, even after being exposed for three or four days. 19. Sow left after cutting ? — The silo is cut into for each supply, and the cut face left as you would that of a haystack. 20. Quantity of grass put in. — About fourteen cartloads — that is, two at each filling. 21. What quality of grass should he used, and at what stage of growth should it he cut ? — From experience here, we say, " The better quality the grass, the better the ensilage ; " and, as the aftermath portion has come out as good as the other, it should follow that grass of any age may be successfully used. 22. Other crops. — My neighbour intends to operate (in a second silo) next year, on tares, oats, and prickly comfrey. 23. Material for huilding silo. — The walls (14in. thick) of silo are built with good bricks and mortar, and faced with a coating of cement. The floor is made of bricks covered with cement. 24. is the silo sunk or not ? — The silo here is 8ft. deep, 7ft. of which are below the surface of the ground. Our experience has, however, suggested several important improvements, a description of which, to be clearly understood, should be accompanied with plans to illustrate. 25. Sow drained ? — The silo was well drained all round, and under, but not " into." 26. Should floor he level ? — Give it a fall of lin. for its whole length, and at one corner of lowest end make a small shallow well, 9in. square by Sin. deep, from the bottom of which take a small pipe to a tap outside. 27. Sow covered in ? — With a simple roof resting on the silo walls. 28. Cost of construction. — This can be easily ascertained, and would depend to some extent on local circumstances. There would be so many cubic yards of excavating, so many yards of brickwork and cement plastering, and lastly, a plain substantial roof of some kind. It has been determined that the next silo erected here shall be roofed over, and an arrangement made whereby the weights can be raised and lowered with a block and pulley, so as to ease the manual labour. An improvement in the weights is also contemplated. 29. Cost of filing. — This will depend very much on how far the land on which the grass grows is from the silo. After this it is only a matter of carting to the silo and filling in as mentioned under heads 2, 3, 4. 30. Ration for each cow. — ^From 351b. to 501b. per day, according to size of beast and quantity of other food given. 31. Quality of butter and cream, and condition of cattle. — The butter and cream continue of the very best quality, while the improvement in the general appearance of cows is most decided. 206 Silos for Fodder Crops. 32. TJUlity of silo.—li is obvious tliat sUos Tirtually perform at once the functions of the three existing operations— viz., first, hay-drying; secondly, stacking ; and thirdly, that of a stacking barn. Moreover, they will, when fairly well built, last fifty years or more ; so that, practically, no future expense need be incurred beyond that of filling them annually. 33. Analysis. — This is beyond my province, but I shall be glad to forward a sample to Professor Toelcker or any other analytical chemist for analysis. 34. Weight of ensilage. — One cubic foot was put on a scale, and it weighed 4341b., thus showing that our silo contained, when opened, rather over 10 tons. Comparing this with head No. 20 shows that little or no loss of weight can have taken place under the operation. There can be no doubt of the great importance of this subject to every agriculturist, more especially to grass farmers. One of my correspondents in Ireland says that he and his father had 300 acres of meadow to save last summer ; and, owing to the extraordinary wetness of the season, a great portion was lost. To such gentlemen silos wUl be the greatest boon imaginable. They can cart to them all the grass from shady and damp places round woods, &c., leaving that on the more open and upland places to be made into hay. Being urged by some friends to ofEer my services in connection with this question as far as my duties here will permit, I shall be glad to arrange for furnishing plans and particulars for silos, and also to give instructions and personal superintendence when required. Thos. Easdale. Estate Oflce, Pepper Arden Hall, East Cowton, Northallerton. Since the foregoing particulars were published, Mr. Copley has con- siderably added to and altered his silo, as will be seen by comparing the plan given on page 202 with that of the improved structure shown in the chapter on Silos, in the early part of the volume. A second and larger pit has been made and a new roof erected, extending 3ft. beyond the edge of the pits on each side, thus forming a bench or platform whereon the weights can be placed when taken ofE the ensilage ; and at other times the space is found convenient for various purposes. One side and the two ends are enclosed with feather-edged boards, and at the front are double doors made of the same material ; so that the building besides acting as a roof for the sUos, forms an excellent store shed. The smaE pit (the original sUo) is 12ft. long, and the new one ISft. long ; both are 7ft. wide, and 10ft. in depth, 8ft. being below and 2ft. above the surface of the ground. Appendix. 207 MR. STOBART'S SILOS AT PEPPER ARDEN, NORTH- ALLERTON, YORKSHIRE. [The following contains the most material parts of several letters from Mr. Easdale wHcli have appeared in the Field during the latter part of 1883 and the beginning of 1884. A plan of Mr. Stohart'a double silo (which has been converted out of a large seldom-used building in a corner of the farmyard) is given in the chapter on silos in the earlier part of this volume.] The large silo at this place — of 100 tons capacity — was opened on Oct. 22, and tlie improved " Cowton" silo on Nov. 10, and in both cases the contents were found to he in an excellent state of preservation. We cannot any longer allow the question to be considered problemati- cal as to whether " the thing can be done," since with us it is an accom- plished fact in two successive years. Both at Cowton and here (within one mile of each other) can be seen ensilage chopped and unchopped — made of meadow grass, oats, clover and rye grass, tares, and prickly comfrey, and all well converted. The silos at this place are each fitted with a small pipe, from their lowest part inside to a tap outside, for the purpose of drawing off whatever juice may have collected at the bottom. This juice is of the consistency of oil, and comes from the tap of a bright amber colour. It has been drawn regularly since the last week in September, and given to the pigs, mixed with their ordinary food. These animals have become so exceed- ingly fond of it, that some of them do not care to take their food unless they have with it their " gill of juice ; " it has, moreover, proved of undoubted benefit to their general health and appearance. A litter of sucking pigs, immediately they were able to feed from a trough, took to this juice with avidity, and their attendant states positively that a skin irritation, which at the time troubled them, disappeared within a week, and they are now (Nov. 17) the picture of health, and doing well. The entire cost connected with the work this year has been carefully calculated, and we find that the labour portion (including weighting operations) will not exceed 3s. per ton; the charge on the cost of adapting the building, 6d. per ton ; and the charge on the cost of iron weights, 9(i. per ton ; making the whole cost per ton to be not more than 4s. 3c?. We cannot speak too highly of the convenience and adaptability of t;he iron weights that are used to obtain the compressive power. They were cast to 'a model specially designed by ourselves with a view to secure even pressure throughout the entire surface and convenience of handling, both of which objects have been obtained to the entire satisfaction of the owners. Mr. Stobart's large pit (27|ft. long and llift. wide) is being pressed with twenty-four tons of iron weights. With the assistance of three 208 Silos for Fodder Crops. men and our patent hoist, we lifted these 480 blocks a height of ten feet, and packed them away carefully in three hours and a quarter ; and after a day's filling, these same blocks were removed from their places, lowered a depth of six feet, and placed in position in one hour and five minutes. In other words, each ton was raised in eight minutes, and lowered in two and a half minutes. Mr. Stobart, having taken a great practical interest in the question, was anxious to obtain, by experiment, a trustworthy test of the value of ensilage as food for fatting cattle. For this purpose, twelve beasts were taken (eight steers, two cows, and two heifers) ; four steers and two cows were placed on one side, and four steers and two heifers on the other side. All alike were given the same quantity of meal and cake : plus this, one lot received daily for each beast 2441b. of best quality hay and 951b. of turnips, while each beast on the other side received, besides meal and cake, 751b. of ensilage. No other food than what is mentioned was given. This diet was commenced on Nov. 10, and on the 17th the cattle were weighed separately. They were again weighed on Dec. 8 with the following result: No. 1. Steer N cwt. ... 10 ... 9 Hat ov. 17. qr. lb. 3 1 1 3 AND Turnips. Dec. 8. cwt. ar. lb. 11 .... Advance, cwt. qr. lb. 10 2. „ 10 2 14 .... 3 14 3. 9 9 3 7 .... .. .. 2 7 4. „ 7 8 ...0 3 5. Cow ... 11 ... 11 11 2 14 .... 2 14 6. ,, 12 1 2 Total No. 1. Steer ... 59 Nov. 17. c\vt. qr. lb. ... 12 2 .. 12 ... 10 2 14 .. 11 1 7 .. 10 ..927 63 1 7 Ensilage. Dec. s. cwt. qr. lb. 13 2 4 17 Advance. cwt. qr. lb. 10 2. „ 12 3 7 .... 3 7 3. „ 11 2 7 .... 3 21 4. „ 12 14 ..037 5. Heifer 10 2 7 .... 2 7 6. „ 10 21 .... .. .. 2 14 Total . .. 66 70 3 4 3 Showing a balance of 491b. in favour of ensilage. It will thus be seen that ensilage can supply the place of both hay and turnips, and have a considerable something to spare. The cows and heifers did not do so well as the steers ; this may be accounted for in the fact that the cows 5 and 6 in the first lot were already well up in condition, and, being older, would not lay on so fast as the young animals. The heifer 5 in the second lot was suffering from a cold when housed, and has been dosep with medicine several times since ; while her mate No. 6 has aU along partly refused to eat her oilcake. Pepper Arden Silos. 209 TMrty-six stalled and sixty -seven lean cattle are getting ensUige as a portion of their food every day, and it is calculated that the two pits hold sufficient to last, at the same rate of consumption, until the middle of April. The experience of others as well as ourselves shows conclusively that, besides meadow grass, clover and rye grass, tares and oats by this method of preservation make excellent cattle food. That being so, I would take the liberty to call the earnest attention of all owners and occupiers of heavy or clay land to the subject. Let them take note of the experiment recorded in this letter, and let them feel assured that every one of them (unless their land is rotten with water, and consists of nothing but barren clay to the very surface) can grow in abundance the same kind of material, and quite as good, as that by which these results were obtained. Mr. Stobart's flock of Cheviot in-lamb ewes have been getting a small daily allowance of ensilage since the middle of November, the object aimed at being to get the animals used to the new food before the severe weather set in or the lambing season came about. So far, the effect on the sheep has been most excellent, their health being everything that could be wished, with bright eyes and springy gait, and that nervous alertness so indicative of vigour. They wiU not touch the hay in the racks above so long as there is any ensilage in the troughs below. It may be added that a small quantity of oats is mixed with the ensilage, in the proportion of 101b. of the former to 601b. of the latter. A letter has been received from Mr. John Nettleton, of Northallerton, the veterinary Surgeon who has professional charge of the entire collection of Mr. Stobart's live stock, and he says, under date of Feb. 4, 1884 : — " I am happy to say we have had far less disease amongst the cattle at Pepper Arden since they have been fed on ensilage than at any time pre- viously whilst they have been under my charge ; in fact, we have not had a single case of indigestion, constipation, or any disease that could be attributed to feeding — which is very remarkable, considering the large number of stock." The many comments made on the subject of compressing ensilage since Mr. Jenkins's visit to the " silos of the north " show that consider- able interest has been excited in connection therewith ; and as the " iron blocks " so frequently referred to originated here, you will perhaps allow me to offier a few remarks illustrative of their practical application. These weights are reported as "huge blocks;" but, seeing that each of them contain no more than the merest fraction above one quarter of a cubic foot, I venture to think the term " huge " is calculated to convey an exaggerated idea of their size. Their dimensions are ISin. long by Sin. deep and 5in. broad, and they are as nearly as possible lewt. each. This weight does not exceed that of pig iron bars, which, as is well known, are handled by thousands of men daily, monthly, and yearly with- out complaint ; whereas in silo work these blocks need not be raised and lowered on more than six separate occasions in any one season. Note P 210 Silos for Fodder Crops. also that one layer of them (not two as reported) gives the desired pressure. The manual labour, moreover, is with us much diminished by the use of the excellent patent hoist, which is peculiarly well adapted for the wort ; in fact, the assistance of this hoist is essential. It is to be feared, however, that those practitioners who complain of excessive clumsiness and laboriousness in the matter should really, in some degree, blame themselves for a want of foresight in not providing suitable convenience. All those gentlemen who have visited the silos at Cowton and Pepper Arden wiU have noticed that a bench or platform is provided at one or both sides of the pits, on which all weights rest while filling operations are being carried on, so that when wanted they are close to that part of the pit on which they are to be laid, and, with the hoist mentioned above, they can be lifted and laid with comparative ease. The result of this arrangement here is that the entire labour of moving the weights off and on the large pit (holding from eighty -five to ninety tons of ensilage) did not cost Mr. Stobart more than 30s. from first to last. Under the searching examination of Mr. Jenkins and other gentle- men who accompanied him, it was satisfactorily proved that the cost of Mr. Stobart's ensilage when ready for feeding, and inclusive of rent and taxes and every other charge against it, did not exceed 14s. per ton, and that its feeding value was from SSs. to 40s. per ton. Considering this in conjunction with the other generally admitted fact that the quality of the ensilage here is second to none in the country, it may, I think, be reason- ably claimed that the method by which this end was obtained has been fairly successful. Thos. Easdale. Pepper Arden, Northallerton. MR. C. G. JOHNSON'S LEYER-PRBSSUEE SILO. The bmlding is of brick, aU above ground, with slated roof. It is 28ft. high up to the eaves, 10ft. by 18ft. inside, 9in. walls, with the exception of the front end, around doorway, which is 14in. work ; and is designed to be filled to 22ft. high of ensilage, leaving the remainder for working room. I began to buUd about the 1st of September, and the fodder intended to be saved (second crop seeds and clover) must be all in before, say, the second week in October, consequently there was no time for lime to dry ; and being ignorant also as to the amount of lateral pressure to be expected from within, I thought it safer to have the walls up to 22ft. from the ground set in cement. Experience proved there was no lateral pressure observable. My next silo wiU therefore be either sheet iron, wood, or 9in. brickwork set in lime. Mr. Johnson's Lever- Pressttre Silo. 211 The bottom of the silo consists of a framework of rough wood, upon which the ensilage rests, and which, taken hold of by two rods communi- cating with one end of the lever -beam, enables the weight of the ensilage to be used as the fulcrum from which to inflict the pressure upon itself — thereby giTing it a double squeeze from both top and bottom, and saving the necessity of heavy masonry, which would otherwise have to be pro- vided to keep down the short end of th^ lever. The crop is at first thrown in through the large folding doors at the bottom, which are made wide enough to admit a cart to back into the silo to remove the ensUage. As the grass rises, this space is made up by loose boards (in my case old railway sleepers), one on the other edgeways. When it has risen above this aperture, it is forked off the cart by one man on to a scaffold, and from thence by one man standing thereon through the long-shaped window, which, as the grass rises, is also made up with loose boards as before described — ^the latter being in this case to- save unnecessary forking until the stack has risen. I may here mention that, though I did not fill up the interstices between the boards (which I could easily have done), the ensilage was just as free from mould as at any other part of the wall sides; and further, it may be mentioned that V 212 Silos for Fodder Crops. Mr. Johnson's Lever-Fressure Silo. 213^ u z 3 z o z o p u 111 CO I '\ I "-U 214 Silos for Fodder Crops. when the pressure was first applied from aboTe, the air could be heard hissing out through these spaces. When the day's filling is complete, the top covering of boards is laid on with longitudinal and transverse timbers to receive the pressure ; the hydraulic jack (which it may be seen is at the weighted end of the lever) then comes into play, and lowers the wrought iron cradle and transverse timbers, which are attached by chains to the lever beam on to the longi- tudinal timbers, and a strong round iron bolt is then adjusted into one of the holes in the cradle according to the height of the ensilage. The whole force of the weight of the boxes full of stones at the out end of the lever — ^which is about four and a half tons multiplied by the length of the lever — then comes on and inflicts a pressure of about 2 cwt. per square foot (including weight of beam, cradle, boards, and everything) ; this at once presses down the grass about two feet, which is the extent of travel the lever gives at the point of pressure. The hydraulic jack is then worked by one man or very easily by two, and, having a stroke of about six feet, quickly raises the weighted lever ; the pin in the cradle is with- drawn, and put in so many holes higher, say two feet. On comes the pressure again, and this time, the grass having become so far solidified as to be able to bear the weight, the beam is kept up at, say, half stroke, and there hangs the weighted lever, preserving a continuous pressure of about sixteen tons resting upon the grass. Or, if the attendant is not satisfied, and has reason to fear that there is not sufiicient travel left to allow for the sinking of the grass .before he comes again next morning, he raises it again to full stroke ; and it is found that this is ample to last well into the next day, and thus secure continuous pressure. Next morning we generally found the ensilage sunk about another foot ; the lever is raised by one man in a few minutes, and the weight left hanging in such a position that it must sink about two feet before it need agaiu be adjusted. This is not generally for some days ; and shortly, as it becomes settled, need not be looked to for weeks. It will be seen in the accompanying sketch that the cradle upon which the beam rests its pressure does not appear long enough to reach the grass when only a small first day's work may have been put in. This, however, is provided for, as, though not easily shown on so small a scale, it is made telescopic, and lengthens out to follow the ensilage. It will also be observed that the chains which are attached to the cradle and transverse timbers are carried over two pulHes at top of beam, and thence, after passing through two snatch-blocks fastened to the wall, can be hooked on to the lever beam, and then, by working the jack through its full travel of 6ft., they are raised about 8ft. out of the way of the people treading the grass. When it is desired to remove the ensilage for consumption, the hydraulic jack raises the cradle, boards are taken ofP as far as required, and the weight put on again — ^the cradle retiring towards the out-end of the lever as each section is cut. Thus the same uniform continuous Mr. Johnson^s Lever-Fressure Silo. 215 pressure is maintained, the weight on the cradle being reduced by the shortening of the leverage in proportion as the area to be pressed is diminished. Near the top of the silo there is a shelf which is for the piling away of the coTering boards, and for the man to stand on to work the jack. I believe my silo when full holds 90 to 100 tons. The weight of a cubic foot of ensilage 6ft. from the bottom was 601b. Of course, the somewhat unusual height of the building is to save first cost, as the expense of pressure is the same for a high silo as a low one. Also, the deeper the ensilage, the more pressure from its own weight, and tthe more f uU days' work at filling — not so much time being lost in starting and stopping as is the case with the small fillings for so many toppings •out. This, to my mind, more than compensates for the wages of the man who forts ofE the scaffold, or for an elevator, if the latter be preferred. I prefer silos above ground because it saves excavating ; and, after all, you cannot have less than 9in. work, and in most cases the earth would require more to keep it up. Again it is much cheaper to fork off a <3art in the long days of summer than out of a deep hole every time you fodder the cattle in winter, as will be found when this new feed gets into the wholesale scale of every-day practice. Besides, there is the risk •of water oozing through your cemented walls and making tea-leaves of the ensilage. I may add that for the last two months I have been feeding sixteen bullocks and heifers of the largest size on nothing but ensilage and 61b. daily of cake and meal ; and the result is, I consider, at least a dead heat between them and similar bullocks on the same allowance of cake and meal, and turnips and hay ad lib., instead of ensilage. I hope to put up another silo of about 100 tons to be ready for the spring. Like you, I at present do not believe in light pressure or no pressure. The weight of evidence goes to prove, the greater the pressure the better the ensilage — the limit being that point at which the juices begin to squeeze out. Up to that weight it pays in quality of product, and quantity stored in given space. C. G. Johnson. Oakwood, Croft, Darlington, Jan. 18, 1884. [Mr. Johnson subsequently informed us that the total cost, including roof, windows, covering boards, &c., was about 1601. ; of which sum 651. was for the masonry of the building, and 40Z. for the pressing apparatus. " At this figure," he remarks, " I have no reason to be dissatisfied, as I believe it compares favourably with the cheapest construction on the dead weight principle, even where only stones are used for weighting." The weighting apparatus, however, would have cost more had an engineer been engaged to do the work, but Mr. Johnson employed men under his own supervision. — Ed.] 216 Silos for Fodder Crops. MESSRS. BRODERICK'S SILOS, AT HAWES, N. YORKSHIRE. (Agricultural Gazette, Feb. 12, 1883.) The foUowing is an account of an experiment made by my brother and myseK last summer, hoping thus to help in deciding the real value of the system. I had long looked for some discovery which should insure the farmer against the heavy losses sustained by the bad harvesting of forage crops consequent on our uncertain climate, and some ten or twelve years since I made some small experiments by hermetically sealing grass pressed into tins, but was discouraged by the condition in which it came out, and the bad smell given ofE, though I now find that it had some resemblance to ensilage. When I heard of M. GofEart's trials and success in Prance, and those of his followers in America, I determined to try it at once. Last year (1882) the Earl of WharnclifEe kindly offered to buUd us a silo, and we came to the conclusion that the easiest and cheapest method would be to make it an existing stone barn. We selected rather an old one, and excavated the rock to about 6ft., in order to get sufficient depth for the pit. From the bottom of this excavation we built thin inner walls — excepting in the front, which was very bad and was rebuilt — filled with grout or thin mortar, our object laeing to get solid air and waterproof wall, and also straight and perpendicular ones, as the old ones were not so. We thus saved the expense of building an entirely new barn and roof, and cattle shed or lean-to which is attached. The walls are faced with cement, nd the floor is constructed by laying a thin cover of 2in. or 3in. of lime concrete coated with cement, and the whole white-washed two or three times with cement without sand. This is important, as it gives a very hard, smooth, waterproof surface. The silo thus constructed would have been 29ft. long by 14ft. wide, but we thought it best to divide it, for convenience in fillin g, by a partition wall a foot wide — of course faced with cement on both sides. This gives us two pits, each 14ft. square by 15ft. deep. On Aug. 12 (a dry day) we put in as it was mown, unchopped, a very heavy crop of natural meadow from about five acres of land. We had three or four men inside tramping and spreading the grass evenly ; it however, fiUed both pits to the top. On this we placed some bad hay, and then weighted with about 30 tons of stone (equal to 12 or 13 cwt. per square yard) without boards or planks. Next morning it had sunk about 6ft., and went on sinking for about a fortnight. In about a week after filling it had begun to ferment, and was slightly warm, but never attained a high temperature. We opened it in the beginning of January, and, except a few inches on the top, it is perfectly preserved quite to the wall sides and bottom, some near the wall sides being nearly as green as when put in. The bulk of it Yorkshire Silos. 217 is about the colour that slightly sweated hay would be if wetted. It is perfectly clear of mould, or any signs of putrefaction, and quite cold ; but if lightened and exposed long to the air, will again begin to ferment and heat. Thus, if the weight is taken ofE the edge where it has been cut away from, it will begin to heat and smeU like sweating hay, and the cattle seem to like it well when warm ; but it will shortly begin to dry, and mould. We are feeding it to seven cows which calve early in the spring, and are therefore naturally fast losing their milk ; yet they improved consider- ably for three weeks after coming from hay. The milk has a slightly altered flavour from that of hay ; but the butter is very good in flavour and colour, much better than hay butter. The cattle are extremely fond of it, and this is a good test of its quality. They all ate it without hesitation from the first. Horses will generally eat it at once, and sheep after a short time. I think it at any rate equal to, if not better than, the best hay, though I should certainly hesitate to say that it is as good as green grass. With our ordinary horses, hands, and machinery, we put in silos about five acres of heavy grass, and did some haymaking as well in a day. The rest of our hay, about 100 acres, took us five weeks, and a lot of it got spoiled into the bargain, though last hay harvest time was considered better than an average. At the rate of ensilage we should have done in less than three weeks, as most of our land had much lighter crops. Other things equal, the saving of labour, and loss by bad weather would certainly be a very great saving in favour of ensilage. I do not think it at all necessary for the silos to be entirely sunk in the ground; and they would be quite as effective if entirely out of it, if strongly built and cemented. Nor is any concrete necessary; and I should say that nothing would make a better floor than bricks paved in mortar and coated with cement ; stone or flags would also do. A great advantage may be gained for filling thein by building them in hiH sides, so as to bring the top level with the ground at the back side, and it also affords fall for drainage of the walls. Many existing stone bams can be converted into silos by simply cementing the walls and laying down fioors. It is also quite unnecessary to chop grass for ensilage ; a little more pressure will do just as well. The object of chopping is only to make it pack closer, or, in the case of maize, to make it more eatable. Hawes, North Yorkshire, Feb., 1883. Geo. Beoderick. Since I wrote on the subject of ensilage last year, my brothers and I have had two more barns converted into silos, and we thus have had this year the experience of four silos, with an estimated weight of between 200 and 300 tons of grass. Through having existing barns, the investment has been small in com- parison with those who have built entirely new silos ; yet the result may 218 Silos for Fodder Crops. be interesting to those wlio, like oiirselTes, have stone or other barns, and may think of converting them. The two we had made in 1882, with a capacity to hold about 150 tons, cost about 50Z. ; the second one, capable of holding about 70 tons, about 20Z. ; and a third one, with a similar capacity, about lOL I beUeve many of the experimental silos I have seen have been made to cost a great deal more than necessary, through want of a proper know- ledge of what was really required. This is necessarily the case with anything in an experimental stage, and therefore any estimates of costs, whether of building sUos or filling them, at present made, though very instructive and useful, ought not to be regarded as correctly representing the cost of the system when the experience of a few more years may have brought it much nearer perfection. There seems to be the most room for improvement in the methods of weighting, and for experiment on the amount of weight, or other manner of compression, required to obtain the best result. The latter point is of special importance, but does not seem yet to have been satisfactorily solved. It would make a considerable difEerence in the cost of filling if it were found that a comparatively light weight will make as good ensilage as a heavy one. There have been various methods of mechanical pressure tried with varying success, but we have as yet mainly used stone, iron, and other manufactured dead weights, costing, in some cases, as much as the silo itseK, being far too costly for general use. A great point is to have the silo deep, since the same weight presses a quantity of ensilage varying in proportion to the depth. One hears of silos from 7ft. to 12ft. deep, with lateral dimensions of perhaps 17ft. by 40ft. This is altogether out of proportion, and would take three times as much weighting as one, say, 15ft. by 20ft. by 25ft. deep, which would hold more ensilage and would have far less waste on the top and sides. Of course a good deal depends on the nature of the ground as to the depth they can conveniently be made. If a steep hillside can be taken advan- tage of, a sUo can easUy be made 30ft. deep. It is stated by some that the weights should be put on every night whilst filling ; but this entails a lot of labour, especially where the process is slow ; and we have not found it at all necessary. If grass be filled in to a depth of 8ft. or 10ft. one day, it will not take any harm before next morning, when the filling can be recommenced, and another depth of 8ft! or 10ft. put in — which is sufficiently heavy to press that previously put in ; and so on till the pit is full. Of course, if the filling is interrupted for more than a day, the weights wiU have to be put on. When the weights are put on, a great shrinkage takes place, making room for more fodder. But where dead weights are used, it seems questionable whether it would not be cheaper in the end to make the silo large enough to hold the whole crop at one filling and weighting, saving the labour of handling the weights so often. It may look an easy matter enough to people experi- menting with 10 or 20 tons of ensilage in a small silo to toss a few tons Yorkshire Silos. 219 of weights on and off half a dozen iimes ; but in practice, where 200 or 300 acres have to be siloed, it would become a serious matter. The best shape for a silo, I fancy, is long, or oval, with the door for emptying at one end, so that the least amount of surface wiU be exposed while cuttiag away. It is often stated that exposure to the air does not afEect the cut face of the ensilage ; but if anyone will take the pains to cut a slice 2in. thick from a face that has been exposed a few weeks, and perhaps become mouldy, he will find that it has become darker coloured and of an insipid smell, showing a considerable deterioration in quality. To save the expense and trouble of having a mason to wall up and cement the doorways each year, we have had loose wooden doors made, which fit the doorways, and are placed flush with the cemented wall inside. They are then supported behind by two upright doorposts, which are held firmly in their places by wedging top and bottom pieces tightly in between them. The crevice left between the door and the cement is then plastered up with cement or good clay. All that is required to open the door is to strike out the top and bottom pieces from between the upright doorposts, and the whole thing will come out. It is not necessary that the doors should be so very strongly fixed, as there is practically no lateral pressure in ensilage [when the grass is not chaffed. —Ed.] It is not necessary to chaff the finer grasses for ensUage, but those who have power and machinery may do so if they choose. We have pitted grass in dry weather when it was free from external moisture, and also when it was dripping wet, with no material difference in the preservation resulting, except that when it is put in wet there is more soakage at the bottom — which should not be wasted — and less heating during fermentation. With ordinary grass I think it is better to err on the wet side, if either. If it is allowed to dry in the sun for a feWrhours, the heating in the silo wiU be much greater. The cost of stomg green crops may be anywhere between ten and twenty shillings per acre, according to crop and circumstances ; but, on the whole, I am inclined to think it is cheaper than making hay. The question of emancipation from the effects of the weather in securing forage crops, which has so long exercised men's minds, has been abso- lutely solved by this system : and this, I dare say, is its main advantage, though I think it has others. Meadow grass will lose from 76 to 80 per cent, of its weight by drying to hay.* How much it will lose by conversion to ensilage I cannot say, but it cannot be much, since by artificially drying ensilage I find that it loses over 75 per cent, of its weight. Now, I have been feeding milk * The amount of water in grass varies considerably in different localities, and in North TorksMre the percentage is evidently very high. "We hear there of ensilage weighing from 581b, to 601b. per cubic foot ; whereas, from drier parts of the kingdom, we have received samples weighing only about 301b. per cubic foot, so little moisture did they contain. — Bn. Q 2 220 Silos for Fodder Crops. cows entirely on ensilage, and others of similar age and size entirely on hay, and I find that those on hay eat on an average 281b. per day each, and those on ensilage eat 661b. per day, and thriTO better than those on hay. The 281b. of hay on the above calculation represents 1121b. of grass, and the ensilage, I should think, at the outside, not more than 701b., showing a gain of over 30 per cent. These figui-es are rather startling, but they seem to be fuUy borne out by the extra number of cows that will winter per acreage on ensilage. It may seem incredible at first that the same material can produce such different results by diflrerent methods of preservation. But it should be remembered that the chemical analysis of a feeding stuff is not a true guide to its value as a food ; for a succulent food is more readily assimi- lated than a dry one, and will therefore produce a better result, though it may not show a higher analysis. Also that, in the conversion to ensilage, certain woody substances are rendered more digestible ; but, by a process of drying, they are rendered less so. Certain stimulants are also formed by fermentation, as alcohol, aldehyde, &c., which probably assist, to some extent, the process of digestion. If anyone will take notice of a grass crop mown before it is ripe, he will find that, during the few days that it is drying, a very rapid ripening process takes place, and probably a considerable portion of the nutrient constituents of the plant are converted into woody fibre, or transferred to the seeds, which, when the hay is dry, appear to be quite ripe, and in great part shake out. "When all these things are taken into account, it becomes apparent that it may be quite possible for a diiference of 30 per cent, to exist in the value of the two products. Some chemists will tell us that, by the conversion of grass into good hay, practically all the nutritious substances are preserved. But the practical farmer knows that a very considerable part of the feeding value is lost. It is not diificult to prepare cattle for the butcher on a good pasture without the assistance of any artificial food. But who would think of doing so on hay, even on the very best quality P And it is only necessary to look at the diflierence of the milk yield and the quality of butter, between hay and grass feeding, to convince one whether grass loses value by desiccation. This settled, it follows that, i£ ensilage is a nearer approach to grass than hay, it is of more value per acre ; and this it evidently is, though it is far from proved that it is equal to green grass. Perhaps it approaches nearest to grass iu the quantity and quality of milk and butter produced from it. There are a few other minor points of advantage over hay. Along with being placed independent of the weather, one can cut the crop when in the best condition, which was not always the case by the old method. Being able to get the crop ofE the land at once, the aftermath, or second crop, can begin growing at once, without being interfered with, which it could not always do with hay. In fact, it is sometimes very seriously damaged by the hay being tossed about on it for perhaps a fortnight or Yorkshire Silos. 221 three weeks. Though I have not tried it, ensilage might be expected to be good for horses that have bad teeth or are broken-winded. The most disagreeable feature about it is the smell, which, though not offensive, hangs about a good deal, and might not be pleasant about a homestead. On the whole, however, we are so well satisfied with it that we shall probably build three or four more silos this year. There is a considerable outlay in the first place, and this will no doubt be a serious question with many tenant-farmers and others wishing to adopt the system. Our land- lord, the Earl of Whamclifie, very kindly buUt us those we have on his property ; and it is probable that many landowners will be very willuig to facilitate the adoption on their estates of a system which promises to be so very beneficial to the occupiers. It is, at any rate, a good invest- ment, and one which will bear good interest; and I believe the land loan companies will now advance money for the building of sUos. Hawes, North Yorkshire, March 3, 1884. Geo. Beodeeick. REV. C. H. FORD'S SILO, BISHOPTOF, CO. DURHAM. [As tlie cost of Mr. Ford's silo was considerably increased, owing to the troubles arising from its being built in ground liable to the invasion of water, we repeat the original estimate, for comparison with the statement of actual outlay.] Estimates for building a silo must vary, to a certain extent, in every locality, and must necessarily depend on the cheapness or dearness of materials. The land in this neighbourhood consists principally of strong clay, and ironworks exist where slag can be generally obtained gratis. I have obtained estimates which I think may be useful to those situated, as I am, within reach of such material. The size I have fixed upon is 15ft. in length, 7ft. in width, and 8ft. in depth, but arranged in such a manner as to be able easily to double it if necessary. The contract price is as follows : 1. If Built of EtrBBLE Slag, Sand, and Cement. £ s. d. 55i cubic yards excavating, Is. per yard 2 15 6 49 superficial yards of slag rubble, mortar composed of fine cement and ground slag provided by contractor, 2s. Gd. per yard 6 2 6 llj floor, lOin. thick, 2s. per yard 13 4 50i yards of skimming to walls and floor, with cement plaster, 8(Z. ... 1 13 5 105 square feet 2in. battens, to cover ensilage 1 15 Eoof, including wall plates, 187 square feet, 6d. per foot 4 13 6 Concrete blocks for weighing ensilage, bolt and eye to each block, 12 tons weight 11 Patent block and sheave running on iron rail ^ *' n Cartage of materials ° ^ *' 40 3 3 If excavating and carting be done by owner, less 8 15 Total ^31 8 3 222 Silos for Fodder Crops. 2. If Built op Concrete Wails 15in. Thick, akb Flooe 12iN. Thick. £ s. d. Concrete walls and floor 9 2 6 " (The other charges the same) Total cost in concrete ^£34 4 11 3. If Built in Bbick. £ s. d. Excavating less quantity owing to thinner walls 2 3 62f yards Gin. brickwork inside course, walled in cement, at 4s. 6d. pSr yard, including bricks 14 2 50 yards in cement plastering, at 6d 1 5 Boards to cover ensilage, carrying weights 1 15 Eoof 4 13 6 Concrete blocks 11 Sheave, patent block, and iron rail 5 Cartage 4 43 18 6 Less excavating and cartage 6 3 Total .£37 15 6 That these prices are not imaginary, I may mention that the contractor will build a silo for any one at the price given above. Having studied the difficulties of weighting, and the expense thereof, I have determined to make my weights of concrete. At the ironworks you can always get what are known here as " runners " — that is, where there is a large mixture of iron in the slag. These lumps are very heavy. I intend to put one or two of these into each square of concrete. I shall have each weight made about 5cwt. They wiU have an eye let iu below the surface of concrete block so as not to protrude. Over the centre of the sUo, say 6ft. high, I shall fix a common railway rail double the length of pit, on which will run a sheave, to which wiU be attached a patent block. Bach weight, when raised above bank, will be run along iron plate on sheave clear of silo, and packed one on the top of another out of the way. The roof will rest on brick wall on the top of one side of silo, raised say 3ft., and will incline like a cucimiber frame, so as to keep its water at a safe distance from sUo. Ohas. Henet Ford. Bishopston Yicarage, Ferry Hill, Co. Durham, Jan. 27, 1883. On the Srd of April I commenced bnUding a sUo, 6ft. below ground, 4ft. above ; soil, stiff and tenacious clay. Owing to interruption caused by sowing spring corn, the excavation was not completed untU April 11. Depth, 6ft. 4in.; length, 18ft.; width, 12ft. 4in. ; total cost, 11. 15s. 3d. A field drain 4ft. deep was cut across ; this was taken up and diverted ; not a sign of water was visible — not even a dampness at 6ft. 4in. April IV, began concreting the bottom of pit with 12iQ. of concrete. April 26, finished concretiag wall, ISin. thick. April 30, mason came, and began walling on the top of concrete ; finished walling May 3 ; roof The Bishopton Silo. 223 put on. May 4, fixed crane to lift weight ; cemented inside of sUo, 2in. on sides. Sin. on floor. May 8, after a wet nigM, water spurted through the concrete floor 17in. thick. May 9, water standing several inches deep on floor; immediately set men to work to expose the walls of concrete below the foundation, and filled all round the outside walls with 2ft. well-puddled clay, at a cost of 21. 18s. Hd.; re-cemented the floor with an additional l^in. of cement. I hoped for the best, and that my troubles vjere now over. Futile hope ! May 29, water again came in ; so I determined to sink a well 6ft. below the foundations, on the N.E. angle of the silo; completed the well June .5, at a cost of 11. 2s., and drove a channel into and under the foundation of silo. This relieved the water supply, and diverted it into my weU. No sign of water till June 28, when I was about to fill the pit with cut grass. Lo and behold ! the water reappeared in sma^ quantities ; so at all hazards I determined to cure it. I therefore broke up the floor so as to admit a 2in. pipe, and made a drain communicating with the well right under the foundation, with a branch to each corner of pit, filled it with stones, and re-cemented it. July 2, the well was walled at a cost of 14s. for labour, and on the following day (July 3) water again reappeared. Perseverance is the motto of every Englishman ; so I broke up floor under south and north end walls below the foundations and put in a 2in. drain, communicating with the draias already put in. This has cured it — at last. Strange to say, my troubles were not yet over. I colbo ed myself with the thought that I had at, any rate got a good supply uf water for the cottage at my buildings, when, lo and behold, I find that the liquor from the ensilage has found its way through the cement into the drains, and so into the well, and makes it smell very unpleasantly. At any rate, my silo is dry. Tour readers will exclaim, " "What a fool you were not to drain the pit first ! " The configuration of the ground was such that I should have had to cut a drain 9ft. deep, through a field drained 4ft. deep, for 300 yards, before I could get an outlet, the drains of which would, of course, be injured ; so I preferred the well as the least costly. I engaged a professional concrete maker, and I think that there can be no mistake about the concrete being good. It consisted of seven con- tractor's barrows of broken slag and sand, both quite clean, and 2cwt. of best cement. No pains were spared to produce the very best article, and the man who made it is one of the most experienced practical working men in concrete work in this county. On reviewing the cause of the water coming in, I am inclined to think that it arose thus : On April 18 the fioor of siLo was laid; on the follow- ing day the concrete walls were commenced. Did the. concrete of the walls, and that of the floor, become homogeneous; or was there an interstice left ? The hardness of the concrete was so great that it was only broken through with immense labour. Steel wedges, held by black- 224 Silos for Fodder Crops. smitli's tongs, and driven by a sledge hammer, accompanied by a heavy iron bar, sharpened at the point, just chipped it away. Owing to the invasion of water my silo has cost 10/. 4s. more than I estimated in your pages last spring ; but it is a foot more in breadth and depth than I at first intended. It is now 16ft. by 8ft. and 9ft. deep. Labour, including exoavationa, concrete, exposing walla, 2ft. puddled £. s. d. clay, sinking well 12ft., walling ditto, levelling, &o 13 17 4 Crane and carriage 3 2 8 Sand 12 Mason 4 3 10 Feltforroof 15 7 Joiner 11 10 7 Cement, with carriage 10 15 8 Blacksmitli ironwork 18 4 Pump, lead pipe, and fixing 2 13 3 WeUbrioks 18 Total ^£50 7 3 I think it right to say that this sum does not include the services of my farm man and two carts and horses, nor any charge for superintendence. I filled the silo on July 5, up to 9ft., with grass not out into chafF. In three days the mass had sunk 4ft., having been loaded with 2001b. to square foot. July 12, filled it again with grass to the top, 9ft. On July 23 I reopened and refilled, and find that I have now 6ft. of ensilage. Filled up again to the top, and have now about 3ft., which wiU, I believe, hold at two cuttings and weightings my second crop of clover — a poor crop. The cost of making ensilage I have found to be about 10s. an acre, I have kept a strict account of the men's time and the wages of each. I have used no salt and no chaff cutter ; and, now that the men are getting accustomed to the work, the shifting 10 tons dead weight took exactly fifty minutes. I calculate that I have put into my silo about twenty tons of fresh- cut grass and clover. It was not possible in my case to weigh it as it went in ; and if two cubic yards of ensilage weighs a ton, I must have nineteen tons of ensilage, which Mr. Jenkins, secretary to the " Royal," pronounces to be a first-rate sample. Chas. Hbnet Ford. Bishopton Yicarage, Ferryhill, Durham, Aug. 28, 1883. From the 6th to the 13th of November I fed my three cows on grass in a good pasture, with the addition of hay, cotton cake, and poUard. The average produce for the above time was 11 quarts in the morning and 9 quarts in the evening. The quality, as ascertained by analysis on the I3th, was that of fair average country milk. From Nov. 20 to Dec. 10 the cows were fed on hay, cotton cake, and about two stones of ensilage each daily. Ensilage was first offered to the cows on Nov. 13. One ate it from the first, the other two ate very little, The Bishopton Silo. 225 and it was not till the 20tli that they could he said to eat it clean up without waste; so I calculate this experiment did not fairly begin till the 20th of November. The milk, to my astonishment, sank to 10 quarts in the morning, but still remained at 9 quarts in the evening. This may have been caused, first, by change of food ; secondly, by the weather pre- venting their grazing in the pasture ; but such was the fact. The butter made from their produce was excellent in colour and taste, with a marked improvement in both. The analysis showed also an improvement in fatty matter. Prom Deo. 10 to Dec. 17 the cows were fed on ensilage and cake only. They ate as much as they chose, no waste being allowed. The quantity of milk was maintained, not increased, as I expected : the cream and butter were excellent, and the analysis showed an increase of fatty matter, and, not to use technical terms, the quality was improved. From Dec. 17 to Dec. 31 the cows were fed on hay, mangolds, and cake, the mangolds as much as they could consume. The quantity of milk was still maintained, but the analysis showed an increase of one-fourth in the fat. I may here state that my cows are bred by myself, and are useful, common country cows. I consider a severe test of the several experi- ments that one cow has calved twice (the last calf dropped on May 8), and the other two calved their first calves respectively on June 3 and Sept. 10. Consequently they might be expected to drop their milk very much at this time of the year. The result of these experiences, to my mind, is to show that ensilage has not increased the quantity of milk as I expected, but that it has maintained the quantity given by two heifers during the depth of winter, and improved the quality of their produce at a period of the year when one might reasonably expect them to fail considerably. It is to my mind very unusual to see cream, at this time of the year, so thick as, to be clotted and to leave the cream jug with difficulty; and, if you calculate the cost of ensilage, it will show a favourable comparison with any other food whatever. My five calves, living on ensilage and hay only, are in remarkably good, healthy, and thriving condition ; and the other animals, fed in a similar manner, are in a better condition than I had them on this clay glebe farm during twenty-five years' experience. Chas. Hbnet Foed. Bishopton Vicarage, Ferry Hill, Jan. 15, 1884. 226 Silos for' Fodder Crops. MB. A. H. GRANT'S EXPEEIEIsrOES IN HAMPSHIRE. [In the following article, Mr. Grant has supplemented the information contained in his letter published in the first edition of this book, by adding thereto the results of his experiences during the past season.] Hating read of the ensilage system, as practised in France and America, I thongM that, as gooseberries are preserved in bottles of water, so grass under pressure in cemented tanks would practically be under water, on aooount of the quantity of water pressed out of it, and filling the space between each blade. This, I beHeve, is really what occurs in ensilage. In the autumn of 1881 1 ensilaged 4| acres of hop clover and Italian rye grass. It was a miserable third cut, but it made capital fodder after preservation in a small experimental silo, 6ft. by 6|ft. by 6|ft. deep. I think it weighed about 6 tons. Encouraged by this success, I ensilaged, in the summer of 1882, about 70 tons of meadow grass with perfect success ; of this quantity, the produce of 5 acres was cut and carried in very heavy rain, purposely for experiment. This portion was perfectly preserved, but it came out of a much darker colour than that ensilaged in fine weather. The stock con- sumed it all, but I fancy they preferred the fine-weather sample. I likewise pitted a few loads of Trifolium incarnatum. Some of this was carried in rain. The cattle ate it all, but it was put in my small pit and with insufficient weight upon it, and therefore was not as good as my other samples. My pits are oblong, and of the following dimensions : 6ft by 6ift 15 „ 11 15 „ 11 20 „ 15 16 „ 15 and I am building others which wiU be : 20ft by 15ft 20 „ 15 21 „ 18 9 „ 9 by .... ... 6Jft. deep. )J ... 10 J) ... 10 3J ... 10 )j ... 10 by ... .... 10ft. deep. 3, ... ... 10 „ J, • • 10 I prefer a depth of 10ft. to a greater or less depth ; 10ft. gives depth sufficient to store a large quantity, and is not too great in depth for a man to pitch the grass out with a pitchfork. I also doubt if ensilage of a greater thickness is as good at bottom as higher up. The various sizes are to suit the " mows " of old barns, &c. ; and the two small silos are made out of disused liquid-manure tanks, and wiU chiefly be kept for experimental purposes. My soil is gravel. This gravel is of considerable value when dug, and it requires only a very slight retaining waU, thus greatly reducing the cost of digging and building. Sampshire Silos. 227 The walls wMct I put up are of 4Jiiicli brickwork, run over very thickly with cement — cross walls between two pits are of 9in. work. The roof is of corrugated iron, built in one case as a lean-to to the cow- house wall ; a door leads into the feeding passage in front of the cow- staUs. Two of my pits are roofed with " WiUesden " paper roofing, but I do not care about it — it is perfectly water tight, but in filling a silo men are apt to strike the roof with their prongs, and the paper, of course, will not stand rough treatment. Two of my new pits will be placed under the thatched roof of. a barn. My weights are chiefly rectangular blocks of concrete, 9ui. by 9in. by 18in. (but Sin. by Sin. by 12in. would be more handy). Mine weigh from about 1001b. to 1201b. each. Before commencbig to fill a pit I build the blocks aU round on the top of the walls to a height of, say, 3ft., so that I get that much additional pit-room at merely the cost of the time and trouble spent in stacking the blocks. I then fin the pit as fast as possible with fresh-cut grass to the top of this temporary wall. My pit is 10ft. deep ; the temporary wall 3ft. I thus get a depth of 13ft. I then lay on a few planks and some weights, say 301b., to the superficial foot, but merely thrown on as quickly as possible. Next morning I find the grass will have sunk about 4ft. I again fill to the top of my temporary wall, but securing a total depth of grass, altogether of, say, 17ft. I now place on the top of the grass about 3 inches of fern, straw, hedge-row trimmings, &c., &c. The surface is sure to decompose, and you may as well lose refuse as good fodder. On this refuse I place 2-inch boards, each as long as the pit is broad. This use is merely to give the weights a level bearing. I carefully place a row or two of weights aU round the outside of the boards, and throw on earth, iron, stones, and anything to make weight. The mass at once begins to sink, and as soon as the surface of the weights sinks below a tier of blocks in my tem- porary wall I roll that tier on to the boards as additional weight, and so on until I have about 1501b. to 2001b., and in the corners 3001b., to the super- ficial foot. The 17ft. of grass will sink to about 7ft. In perhaps two months, if I have a later cut of grass to ensilage, I remove the weights and boards and proceed as before, getting in as much as possible. In cutting out the fodder, I remove, say, a width of 2ft. of boards and weights, and then proceed to cut a vertical slice from top to bottom, as in a hayrick, and with a hay knife. The surface of a cut will keep sound about a fortnight, but this depends somewhat on the amount of weight used, and consequent solidity. I will again borrow Mr. Easdale's tabular arrangement of questions and answers. n xj. t 1. Kind of grass.— I have ensilaged (1) hop clover and Itahan rye- grass ; (2) meadow grass ; (3) trif olium incamatum ; (4) spring vetches and oats. I have now growing, for 1S84 ensilage, hop clover and Italian 228 Silos for Fodder Crops. rye, common rye, ■winter vetches, and oats, and I shall probably try green buckwheat. Spring vetches and oats make perfect ensilage, but I prefer Italian rye-grass, either with or without hop clover, to anything else. I believe that anything green wiU make ensilage. (See also remarks about maize in No. 16.) 2. State of grass when put in pits. — Generally dry, but some very wet. I prefer it dry. 3, 4. Sow put in and how much at once. — I tip the carts and let the grass fall into the pits, carrying as much as I possibly can in the day, and treading it well, especially close to the walls and in the corners. 5. Use of weights. — 1 put on some whenever I stop work, and, when the pit is full, as much weight as possible. I think I can scarcely have too much. 6. Kind of weight. — Concrete blocks 9in. by 9in. by ISin., also earth, sand, both loose and in boxes, old iron, paving stones, bricks, &c. For the future 1 shall make my weights Sin. by Sin. by 12iu. They wiU be handier. 7. Covering boards. — Common deals or Scotch firs 2in. thick ; in length they equal the breadth of the pit. The moisture from the ensilage very soon destroys these boards. I think they will not last above three seasons. 1 shall therefore split with a steam^saw a number of small Scotch firs, of the size one generally sells for pit-props ; these will be cheaper than boards. 8. Straw between grass and boards. — As above stated, I think some straw saves some fodder, as the surface is sure to become mouldy. 9. Hoiv long between each filling ? — Immaterial, if the weights are on. 10. Amount of sinhage. — Yery great — nearly two-thirds. 11. Foreign substances. — I have tried bran, but I thought it useless. It came out apparently the same as when mixed with the grass, though, of course, wet. I now mix nothing at all with the grass. I have tried sprinkling the ensilage with salt, after cutting it out from the pit and shaking it up, but without any appai'ent effect on the cattle. My cattle, however, always have a lump of rock salt in each manger. 12. 13. If airtight and how is air excluded ? — There is nothing to make the pit airtight, except compression by the weights'. 14. Heating. — None observable, but there must be a little at first, as there undoubtedly is fermentation — ^probably before the compression is complete. 15. Chopping of material. — Chaff-cutting is certainly unnecessary, and therefore a useless expense, with all the grasses, &c., which I have men- tioned above. It is probably necessary with maize and other woody foods, from which the generality of American and French ensilage has been made. Even in the mild climate of Hampshire I cannot make maize a success. On wonderfully rich and carefully -worked soil, saturated with manure, I have grown maize seven feet high, and with very thick strong stems, but the first heavy wind from the south-west blew it all down, and Sampshire Silos. 229 in the fields it grew fairly well, say five feet higli, and very thick, but the same fate overtook it. A neighbour of mine tried it in a fairly good field, but it was useless as a crop. I may mention that my seed was specially sent over from America by Mr. John M. Bailey, of Massa- chusetts and Virginia, U.S.A., one of the earliest ensilagists, if not the earliest, in the States. 16. How long closed? — Various times — from two months to eight months. 12. Colour. — Pale yellowish green ; that carried in rain is dark greenish brown, almost black. The flowers of hop clover remain bright yellow ; the red of Trifolium inoarnatum turns dark purple. The smell is much like that of a brewhouse, and wiU cling to one's boots, clothes, hands, &c. 18. How much removed at once 7 — When I had only a few cows I cut enough for, say, three days' use ; now, with a large herd, I cut every day, except Sunday. 19. How left after cutting ? — Just like a hayrick. 20. Quantity of grass put in. — I cut and carry as fast as possible. 21. Quality of grass. — I have always had a very good quality of grass, as I cut it when very young (even for hay), long before it begins to get woody. 23. Construction and material of buildings. — ^Pour and a half inch brickwork, and, for very small silos, bi'ioks set on edge, run over with very thin cement. The floor must be strong, to prevent, as happens in some soils, an accumulation of water beneath the floor, which, exerting an upward thrust, bursts the floor and floods the silo. I have had this happen in two silos, to the great detriment of the water-logged ensilage. To prevent this, I now brick the floor of my silos, dishing them so as to form an inverted arch, and I lay these bricks in mortar, " grouting " them in with cement. 24. Is the silo sunk 1 — Mine are altogether beneath the level of the ground, for convenience in tipping the grass out of the carts. 25. I have no drainage at all. — It is, I think, essential to keep outside water out, and to keep the nxitural moisture of the grass in. These points and heavy weights are, I think, the three essentials to really good ensilage. Ensilage which cattle, especially dry cattle, wiU eat, may be made without attending to these points; but the best ensilage to make reaUy high-class butter, and plenty of it, cannot, in my opinion, be made without the greatest care in these three particulars. I particularly draw t Je reader's attention to this point, as in my letter published in the first edition of the " Silos for Preserving British Fodder Crops " (published in 1883), I said, "I should drain into a dead well if the nature of the soil permitted." I meant to have said, " I should drain the soil surrounding and outside of the walls of the silo into a dead weU, if the nature of the soil permitted." On reading over the proofs of my letter I carelessly over- looked this omission, which I afterwards noticed when writing a later 230 Silos for Fodder Crops. letter to The Field. I am draining the ground surrounding a new sUo as in tlie annexed drawing, this, of course, only suits particular localities. a. Dead well, to collect water from the surronnding soil, with no connection with the silo. hole into the sand nnder the gravel. 26. Should the floor he level ? — I now make the floors of my silos dished to give the strength of an inverted arch in case of water collecting beneath, and I give them a slight run towards one end ; and I make a small dipping place near that end, as shown in the section lengthwise. I find that a certain amount of ooze comes out of the ensilage, and if it is collected in a dipping place it will save some incon- venience to the men who cut the ensilage. Otherwise the portions of the fodder which fall to the floor in the process of cutting out get very moist, and then the men's clothes become wet in throwing the grass out of the pit with the fork. 18 inches deep by 20 inches square is quite large enough for this dipping place; in fact, it should be just large enough to receive a bucket. 27. How covered in ? — I prefer corrugated iron. Hampshire Silos. 231 28. Cost of construction. — I do not know how muoli my silos cost, as the men were continually taken off for other work ; and the cost much depends on the local price of labour, the nature of the soil, and the thick- ness of the wall necessary to retain the soil. I am now making a silo in a bam. I shall not therefore have to charge for the cost of a roof, as the barn, when the silo is filled, will be just as useful for storage of com, &c., as before. The gravel which I have dug out (about 6L worth) just iDalances the cost of digging. It has been used for roads, &o., and some of it, being of very good quality, for garden purposes. The silo will be about 21ft. long by 16ft. wide by 10ft. deep — of which depth 7ft. will be excavated, 3ft. filled up to the level of the old bam floor. Bricks and bricklayer's labour, cement, and lime, will cost about 152., and weights perhaps 8L more ; rough fir slabs 2Z. I thus get a large silo complete for 25Z. ; but this cheap construction can only be obtained under very favourable circumstances. 29. Cost of filling. — I cut and carried in 1881 five acres at 7s. 2(£. per acre. In such a season as 1881 was in Hampshire haymaking a like crop would have cost \l. per acre. I thus saved a rent on this rather poor land. In 1883 I cut and ensilaged a rather light crop for 7s. QA. per acre. 30. Rations per cow. — ^About 501b. — that is, roughly, one cubic foot. 31. Quality of butter. — Very good, and wonderfully good colour. I tried once three cows, feeding on crushed oats, linseed cake, and particu- larly good hay. When fed on half the quantity of oats, and ensilage ad lib., but no cake, they gave 25 per cent, more butter. 32. As stated by Mr. Easdale, of Pepper Arden, near Northallerton, silos perform three operations — making hay, stacking, and thatching hay. I find the buildings very useful, whether empty or not, for storing chaff, lay, straw, com, &c. 33. Analysis. — Mr. F. Woodland Toms sent me the following analysis and notes : Volatile Matters ; Water 70-37 per cent. Aoetio acid (free) 0'20 „ Alooliol 0-08 „ Solid Matters : Albumenoids* 4'14 „ Patty matter 0"80 „ Soluble Carbo-liydrates : Sugars 0'55 „ Starchy matters 3'58 „ Peotoua oomponnds (gum, mucilage, &c.) 8'56 „ Insoluble Carbo-hydrates (fibre) 9'49 ,. Ash 2-23 100-00 * Equal nitrogen (all calculated as albumenoids), -654 per cent. Mr. Woodland Toms remarks that "This Romsey ensilage is, like the French, a very valuable feeding stuff. In composition, its dry matter 232 Silos for Fodder Crops. closely resembles that of hay of good quality; indeed, the albumenoids, or flesh-formers, are considerably higher than in Dr. Voelcker's averaged analyses of hay — doubtless owing to the fact that it was cut so young." In the following table, furnished by Mr. Woodland Toms, is stated the average composition, as given by Dr. Voelcker, of absolutely dry hay deduced from twenty-five analyses ; and Mr. Toms compares it with the Romsey ensilage from my pits, and also with some from those of the Vicomte de Chezelles, iu France. The three columns show the com- positions of the dry substance in each case : Albumenoids Ammonia Non-nitrogenons extractive matter., viz., Acetic acid Alcohol Sngara Starchy matters Gum, mucilage, &o Fibre Fatty matter Ash Hay, average of 25 samples. 9-88 48-09 31-80 2-99 7-24 100-00 Grass ensilage, grown at Eomsey. 13-97 (43-77) 0-67' 0-27 1-86 12-08 28-89 32-03 2-70 7-53 100-00 Clover and grass ensilage, from the "S^icomte de Chezelles. 18-35 0-12 (37-22) 2-41~ 3-62 5-92 4-49 20-78^ 28-87 4-15 11-29 100-00 Such are, in my opinion and practice, the details of ensUage and the method pursued in making it. From a more general point of view, I would point out the great utility of the system in securing late second cuts of various green foods, such as lucerne, giant sainfoin, seeds, &c., &c., at a season of the year when there is little chance of successful hay- making. There is also the very great advantage of clearing the ground at once. There is no fear of the second crop of, say, Italian rye-grass gro-vring up through the rows of the mown grass, as we sometimes see in a showery haymaking time. Neither shall we see the long lines of yellow grass from which the mown grass, after remaining some time in the rows, has been turned. I seize a favourable chance one fine day, and I cut a certain acreage ; by nightfall that amount of my winter fodder is safe under cover. I have no turning, and turning, and turning again of grass, only to see it damaged every time in a greater degree by successive showers, each one of which seems to fall just when the hay is fit to carry. In a word, the anxiety, trouble, and, I may add, beer-drinking, usually con- nected -with the saving of the grass crops, are by the system of ensilage very greatly reduced. I would also notice the increased time the system of ensilage gives to get in, fairly early, a second snatch crop. For instance, I have now (Feb. Hampshire Silos. 233 1884) 25 acres of winter Tetches and oats, sown early in October, 1883, and now looking very well. If tlie season proves an average one I shall mow these 25 acres for ensilage about the 15th of May. I shall then have plenty of time to plough the ground and sow it with buckwheat (which grows well on my poor gravel soil, and makes capital pig-food when ground). "With the buckwheat I shall sow Italian rye-grass for ensilage in 1885, manuring during next winter. Again, I have 30 acres of rye. This probably wiU be ensilaged about the middle or end of April. Some of the land will be sown with swedes, kohl-rabi, and turnips in succession ; some of it, like the vetch ground, sown with buckwheat and Italian rye-grass. Even on my "seeds," some of which I shall cut only once and then plough up, I find the advantage of ensilage, as I can get the ploughs to work at least a week earlier than if I made the crop into hay. As I have said before, both in the columns of The Field and else- where, ensilage is by no means a royal road to agricultural success. It is a great help to our previous ways of securing our grass crops ; but it demands care, attention, "trouble," a considerable outlay of capital, and a great amount of over-loooking at the time of cutting and carrying. The American estimates of ensilage may be true enough as regards that country. Ensilage cannot, in my opinion, be of equal importance ia England. The demand for good hay in England is enormous, and as our towns iacrease it is likely to grow. I have had some correspondence with gentlemen who wish to make ensilage into saleable bales or trusses ; but I cannot say I think the project feasible. There is to be contended with a great ignorance of ensilage; and, when first seen, the smell and appearance of ensUage are not always in its favour. Horses, as far as my experience goes, will eat rye-grass ensilage readily, but not vetch ensilage — ^why, I cannot say. ^ A truss of hay will keep any reasonable time; a truss of ensilage would, I think, heat in a short time ; and a truss of ensilage, if cut the same size as an ordinary truss of hay, would be very heavy and awkward to handle. On a farm, conducted as mine is, seUing nothing but butter and meat, consuming all the grass crops, the straw, roots, and corn on the land, and, indeed, buying straw and cake in considerable quantities, ensilage is an unmixed boon; but to those who have a good market (with a reasonable certainty of getting their money) for their hay and straw and com, I would say " do not meddle with ensilage." If you have ensilage you must have cattle to eat it, and this (say you farm a moderate extent— 200 acres) means a large expenditure of capital in buying those cattle. If you make hay, you can seU it to the neigh- bouring towns and bring back manure ; saving the labour, anxiety, and, in these days of imported foreign disease, the risks of a considerable herd of cattle. 234 Silos for Fodder Crops. I may add that I have never had any diflBcxilty in getting cattle to eat ensilage, and I have never found any liad effects from its use. I think some nitrogenous food, such as crushed oats, cake, &c., ought to be given with it. ' A. H. Gbant. Abbotswood, Romsey, Hants, Feb., 1884. MR. WILLAN'S SILO, THORNHILL PARK, HAISTTS. Sib, — As the question of what a silo may cost to construct in different localities is one of general interest at the present time, you may think that the actual cost of one I have just completed may be worthy of publication in the columns of the Field. I excavated, at the beginning of March, in the bay of a roomy barn, a pit of the cubic capacity of 76 yards, Two of my labourers undertook the job at 8d. per yard, and I carted the greater part of the gravel which came from it with my own farm carts. We were fortunate enough to begin with about 2ft. of sharp gravel, which was put on one side to make concrete blocks, to be used as weights. We then came on a quantity of red gravel, which continued to the bottom of the pit, and which, though rather sticky, with too large a proportion of clay, was of fine binding quality, and was certainly worth more than the trouble of carting a short distance, to cover a yard and several paths which needed repair. I had by me a quantity of old bricks from some cottages which I had puUed down, and with these I commenced to build the walls of my silo. The pit was dug at one end of the bam, leaving room for a similar pit alongside of it ; and, with a view to its future construction, I had the inside built of 9-inch work, and perpendicular, in order that it might serve as the parting wall of two pits. The other three walls were of only 4i-inch work, which was considered quite sufficient, as the sides were so sound and solid ; and they were constructed with a slope or batter of 2in. in the depth of the pit, which was 10ft. It wiU be seen, therefore, that in length the pit was 4in. shorter at the bottom than the top, and in width it was 2ft. narrower. The bottom was covered with a layer of four inches of rough stones, which had been screened from the concrete gravel first excavated, and this was again covered with a layer of bricks. This floor was then grouted in and covered with cement, the sides also of the pit being cemented up to the top. The total cost has been : £. s. d. Excavation, 76 yards, at 8d 2 18 Bricklayer, 12 J days, at 6s 3 15 Labourer, 18 days, at 3s. 3(Z 2 18 6 7 casks 1 bushel cement 5 5 7 loada of sharp washed sand 2 16 6 loads of pit sand 18 Total .£18 10 6 Sampshire Silos. 235 The dimensions of the sUo now that it is completed are (at the top) 16ft. 4m. long, lift. 4in. wide, and 10ft. 2in. deep, and the capacity is within a small fraction of 1850 cubic feet. This capacity will, at 50ft. to a ton, be 37 tons, and the cost comes to 10s. per ton, and a little oyer 251^. per cubic foot. The work is good and solid, and the pit gives every promise of being perfectly dry. I have procured twenty deal battens, 9in. by 2in., with which to cover the ensilage, and their cost was 50?. These have been screwed together with coach screws, and divided at intervals of 18 inches with pieces of board ; and being placed on the barn floor, we have just completed our first batch of concrete blocks in them. These blocks measure IBin. by 9in., by 9in., and weigh, when dry and hard, just 1201b. I have given you my experience in making this pit for what it is worth, but of course a similar pit in a different locality may cost more or less. At any rate it is not likely, 1 think, being Well buUt, to suffer much from decay ; and the small sum chargeable annually as interest on the outlay and for depreciation will be amply compensated for by the saving in the labour of turning the green fodder into ensilage instead of hay. ThornhUl Park, Bitterne, April 18, 1883. Tkank Willan. MR. SCOTT'S SILO, ROTHERFIELD PARK, HANTS. SiE, — I inclose you the analyses made by Dr. Voeloker, F.R.S., of the produce of the same field of clover and rye-grass. The hay was made in the beginning of July from the first cut, the ensilage in the beginning of September from the second cut. The hay was got up in showery weather, and was consequently not of first-class quality. The ensilage was cut and pitted the same day without being chopped, and I have been feeding it to J.'U r I, The silo was filled with coarse grass in October, 1883, and the beam screwed down daily for about three weeks. What was the pressure put on it is not known with any certainty, but when the silo was opened, in the second week of January, the ensilage was found "as hard as a cheese." Next to the sawdust about half an inch of the grass was a bright, green ; this smelt very strongly, and was thrown away. This was the only waste. Cattle and horses did not seem to care about the very top^ but eventually every animal to which the ensilage was offered ate it freely, especially the cows ; and the horses seem to do very well indeed on it. 244 Silos for Fodder Crops. MR. WILLS'S SILO, BLAGDON, SOMERSET. Mk. "W. H. Wills, of Coombe Lodge, Blagdon, writing to the Agri- cultural Gazette, says : " I built a silo, 14ft. by 12ft., and 13ft. deep. The ground was a natural slope, causing 8ft. of excavation at one end. This inTolved a little quarrying, owing to the outcrop of a bed of limestone. We made the walls 2ft. thick of rubble masonry in brown lime. The floor was made watertight, and covered with rough flagging from my own quarry. The walls were topped with an A roof, covered with tiles. The cost of all this, done by my own men, I estimate at 361. for labour and materials. On July 3 we began to cut 44 acres of clover, which we reckoned would have given about If ton of clover-hay to the acre, as the crop was not a heavy one. As the clover was cut it was hauled to the bam, which adjoins the sUo, and there cut by steam into Ifin. lengths, thrown into the silo, and firmly trodden in successive layers by half a dozen labourers. On July 5 the silo was entirely full, though sinking a little daily. "We then covered it with a layer of straw, Sin. thick, over which were laid common deals close together, but with lin. space at each end. Above these was piled quarry rubble, about 3owt. to the square foot. The mass continued to sink until the solid material was reduced to a little over 7ft. On Nov. 3, after four months packing, we opened the sUo, and, with the exception of a very small quantity, perhaps 2cwt. (just inside the doorway, which had been bricked up, leaving a recess of 1ft.), the whole mass was perfectly sweet and good. The colour was something between grass and hay, and the smell rather like fresh grains. "We have been giving it daily both to young stock and to milch cows, aU of whom eat it with great relish." MR. KEMBLB'S SILO, EAST HARPTEEE, BRISTOL. On Sept. 9, 1882, 1 commenced cutting twenty-five acres of oats (Black Tartars). Owing to the wet season, I was unable to harvest this crop, and therefore determined to adapt and fiU. a silo with oat-sheaf chaff. On Nov. 6 I began to fill the pit, cutting the straw to chaff about lin. in length. By this time the oat sheaves were in a thoroughly sodden con- dition, and the corn in them had so generally " sprouted," that apparently all was worthless except as manure. "We continued cutting and filling at intervals, and trod in the final chop on Nov. 11. Nine loads were cut up in this way, which I estimate at 13i tons. "While filling the pit I mixed with this wet chaff 3cwt. of salt and 1001b. of " Simpson's spice." Having filled the pit, I had a layer of dry straw laid on the chaff, then boards, over which I spread layers of sawdust and oat cavings to exclude the air, then, by way of pressure, I placed several tons of freestone on Somerset Silos. 245 the top. The silo in which I made this experiment is a stone and brick- walled room with concrete floor, measuring 16ft. by 9ft. by 10ft. East Harptree, Bristol. 0. A. Kbmble. On March 14, 1883, this silo was opened ; and, after the coyering boards, &c., had been removed, it was found that a little of the preserved fodder was fusty, and this only so slightly that it need not be wasted. Breaking further into the pit, a fragrant odour soon pervaded the home- stead in which the experiment was tested, for a cloud of hot vapour escaped from the ensilage, and reminded one, by its smell, of a newly heated hayrick. A thermometer was plunged as far as a man's arm could reach towards the centre of the mass, and registered 110°. Some of the ensilage was immediately carried to cattle and horses, and was readily eaten by them. An average sample was drawn by Mr. Kemble, and immediately packed in an air-tight tin and sent for analysis to Mr. Bernard Dyer, P.C.S. The ensilage, Mr. Dyer states, had a pleasant aromatic smell and a pleasant, though very distinctly acid, taste. Its percentage composition was as follows : Water 48-08 Oil 2-13 *All3uminouB oompounds 3'15 Sugar (glucose) 0'50 Free acid (calculated as acetic acid) 0'83 Mucilage and digestible fibre 26-34 Indigestible woody fibre 15-70 fMineral matter (ash) 3'27 100-00 *ContainiD.g nitrogen 0-50 f Containing silica 1-66 Mr. Dyer adds an expression of regret that he had not an opportunity of analysing a sample of wet chafi before it was put iato the pit, as the analysis of the ensilage alone throws, at the best, but an uncertain light on the question of the loss that may have occurred by fermentation in the sUo. — Agricultural Gazette. SILO AT NORTH CURRT, SOMERSET. The Rev. R. 0. Lathom-Browne had an experimental silo constructed in the side of a shed, all being above ground. Its dimensions are 9ft. by 9ft. by 7ft. ; two sides are rough walling, and the other two sides are made of liin. pine planking, tarred at the joints. The grass was taken from a rough orchard, carried dripping wet in July ; the time occupied in filling was about ten days. The pressure was about lacwt. of large rough stones per square foot. When opened in January the ensilage was not badly preserved for such coarse wet grass, though rather unpleasant in smell. 246 Silos for Fodder Crops. LORD TOLLEMACHE'S SILOS AT PEOKPOBTON. Lord Tollemachb of Hblmingham being impressed witli tlie value of ■ensilage as food for dairy cattle, and believing tliat it would be of considerable- advantage to bis tenantry, determined to carry out some experiments on his Peckf orton estate, wMeb is situate in tbe heart of the cheese-making district of Cheshire. Accordingly he had an open bam converted into four silos by bricking up the spaces between the pillars, as shown in the plan already given in the chapter on sUos. Three of these silos are 8ft. deep, 15ft. long, and 12ft. broad ; No. 4 is lift. deep, and goes 3ft. underground — this being for the purpose of testing the difference of effect of the earth on the ensilage. In each case the wall is lined with cement, the floors being of concrete. Inside each sUo there is a mark entirely around it at every 2ft. of its height, so that at any time it can be seen what is the height of the fodder within. About ten yards from the corner of No. 4 silo, an engine of 4 horse-power nominal is stationed, and beside it a chaff-cutter. Closely adjoiniug the silos are two pieces of common meadow land, which usually produce about 80 tons of hay, and the machine was put into one of these on the 13th June. As soon as mown the grass was carried to the cutter, and cut into chaff, and while this operation was on, 21b. of common salt per cwt. was mixed with it. The chaff was then wheeled through the doorways (a) into the silos, as much as possible being got in in this manner, after which the shutters above (6) were opened and the doors fastened by being screwed to the jambs, and afterwards bricked up on the outside. The grass chaff was frequently levelled and rammed down. On the silos beco'miug filled np to the level of the shutters (shown by the mark d), ten wooden shutters, each three feet wide and six feet long, were placed on the top of the ensilage, and the whole then covered with bran. Lord Tollemache having at hand a number of boxes which had contained tins of gaseoline (used for lighting Peckforton Castle), these boxes were filled with gravel and used for weighting the silos. The quantities of forage put into the silos were as follows : No. of Silo. Date of flUing. Material. Weight. Acreage. Sinkage when re-flUed. Weight put in to refill. Total Weight. tons. cwt. a. .- p. ft. in. Tons. tns. cwt. 1 Jnne 20 f Upland ■) \ Grass J 17 3 2 July 25 2 6 8 25 2 June 27 do. 17 3 2 2 20 „ 25 2 1 7 24 3 3 July 3 do. 18 10 2 2 „ 26 1 8i 6J 25 4 July 4, 5 fOataandl iVetolies.J 35 6 2 3 37 „ 26 1 9i 8 43 6 Land mown for refilling silos 4 Total weight... Total acreage 15 2 17 117 9 Lord TollemacJie' s Silo. 247 The grass put into No. 1 silo at tlie first filling was a light crop of a,bout 4f tons per acre, mown and carried two hours after a night's rain ; K"o. 2 was filled with a fair crop of about 6i tons to the acre ; that in No. 3 was a good crop of about 7^ tons to the acre ; and that used for refilling also weighed about 7^ tons to the acre. The oats and vetches put in No. 4 silo weighed about llf tons to the acre. The capacity of silos 1, 2, and 3, is 1440 cubic feet each ; No. 4, being 3ft. deeper, has 2060ft. capacity. On the 28th of NoTember one of the silos was opened, and in order that visitors might see the result of the experiment in the best possible manner, a pathway the width of the door, and from the bottom to the top of the silo, was cut through the mass of ensilage. Several visitors were thus able to get in the sUo at once, and abundant opportunity was given everyone for .judging the contents. The ensilage had the appearance of a compact mass of dark, yet bright, brown colour, and it had a fresh, slightly pungent, and rather agreeable odour. There was considerable moisture in the mass, but it was evenly distributed, and was not more apparent at the bottom than at the top. The ensilage had sunk two feet from the point at which the shutters were placed upon it, and for about an inch and a half below the shutters the ensUage was black and discoloured; but beyond this, there was nothing in the experiment that could be described as unfavourable. Lord ToUemache told his visitors that he expected a thicker layer than this to have been spoilt, as the part nearest the external atmosphere usually went wrong. The same thing were found in Lord Walsingham's silos at Merton, in Norfolk. As a matter of fact, the large number of persons present agreed that the experiment must be put down as a great success. " But," it was said by some of the farmers, " wiU the cattle and horses eat it P" Here Lord ToUemache took a handful of the ensilage and offered it. to a young, pure- blooded mare that he had di-iven from the castle. This animal, fed with the best com in the Peckforton stables, took the ensilage greedily, and some young cows in the yard were also offered the new food, and ate it up with great relish. After this, however, " No. 3" silo was, by Lord Tollemache's direction, bored. This silo was filled on a dry day, and thus contained only the natural moisture of the grasses, plus the salt used. The whole mass was much drier than the one opened, and its contents were not so well liked by the farmers present. During the morning Lord ToUemache made some explanatory speeches on the general subject of ensilage, and his own in particular. His lordship said that undoubtedly ensilage was spreading. La-st year a friend of his had made 40 tons, and this year he had preserved 120 tons. In the Peckforton silos the contents were got off land yielding between seven and eight tons per acre, for he found that a cubic foot of his own ensilage weighed 481b. In estimating his silos as containing 118 tons, he had only reckoned on 421b. per cubic foot, so that he had saved 248 Silos for Fodder Crops. more from Ms land than lie had expected. He was convinced that in preserving ensilage great regard must be had to the quality of the food to be made, and therefore care must be taken in its preservation. A great thing was to exclude all external air from the sUo, and to allow the internal air to be expelled by weighting properly. To help this operation it was much better to cut the grass into small pieces at the time it was packed in the silo, as by this means less room was taken up, and the mass was likely to assume a compact form sooner than if the grass had been put in without being made into chaff ; and when this was done there was not so much internal air to be expelled. Although the mass was so moist, not a drop of water was found in the pit — it was so evenly distributed iu the ensilage. On the future of ensilage Lord Tollemache said that his object had been to demonstrate its practicability on ordinary farms, and he thought he had shown them enough to make farmers persevere further in utilising this agency in stock feeding. Subsequently, when the cows came to be fed regularly upon the ensilage it was found that the large amount of salt mixed with the grass had the effect of diminishing the milk supply considerably; and the quantity of of ensilage given to the animals was accordingly reduced from 301b. to 161b. per day, and mixed with chaffed hay. Upon this being done, the cows again began to give their usual supply of milk. About three months after the opening of the silo Lord Tollemache issued to his tenantry a circular giving a series of "questions and answers" somewhat similar to those appearing on page 172, relative to silos and ensilage, and embodying the results of his personal experience. He afterwards invited his tenants to meet him at Peckf orton Castle on the 17th of March, so that he might learn their opinions on the subject, and their wishes as to the construction of silos upon their farms. At this meeting he proposed to build silos for all those who wished to have them, on the condition that if the making of ensilage proved of advantage, they should pay 5 per cent, on the outlay; but if it proved the reverse, notwithstanding every care had been taken in the filling of the sUos and properly weighting them, they should pay nothing ; and in case of any difference of opinion arising on the subject, it should be left to arbitra- tion. This offer was at once accepted by a number of the tenantry, one of whom, in returning thanks, described it as the most liberal offer it was possible to conceive. On April 2 Lord Tollemache opened his sUo which had been filled in the previous June with wet grass. Rain had been falling heavily during the night, and the grass was taken to the chaff-cutter full of moisture. An American, who had been present at the filling of sUos in America under similar conditions, told Lord ToUemaohe that his ensilage would be worthless, as it would turn out to be rotten. His predictions have been falsiRed, for when the silo was opened it revealed the ensilage in a sweet and sound condition, and, in the opinion of the practical farmers present, better adapted for dairy stock, from the moisture it ' contained. Cheshire Silos. 249 than either of the other silos. In the course of conversation, Lord Tollemache said that he had given orders for the construction of two silos on each of his ten farms in Cheshire. His lordship added that he should now have no hesitancy in filling these silos in any weather ; if at all, he would undoubtedly give preference to grass containing moisture. LORD EGERTON'S SILO IN TATTON PARK. The opening of this silo, which had been filled in July, 1883, took place on the I2th of February, 1884, in the presence of a considerable assemblage. The following sketch of the silo and details of the experiment have been supplied by Mr. J. T. Smith, Lord Egerton's agent. The original drawing gave several views of the silo at different stages ; but it will suffice here to reproduce the one representing the pit at the end of the second day's filling (July 5). On July 27, the contents having sunk to 8ift., a further filling took place, again raising the height to about 12ft. On Aug. 20, the level of ensilage stood at 9ft. 6in., having sunk 2ft. Sin. since last filling. When opened on Feb. 12 it had sunk 1ft. Gin. more, being then 8ft. in height. An old icehouse in the park was chosen for the experiment. The walls on the inside were plastered with cement, the original entrance being blocked up, and a new entrance made in centre of dome, as shown by the plan. The size of the house is : Diameter, lift. 6in. ; height to square, 12ft. 6in. ; area, 104 square feet. A portion of the park, fenced in and near icehouse, and which had often been mown without a fair return of keep, was chosen as suitable to supply the crop, and, though amongst it there was a proportion of fine grass, the greater quantity was rough and coarse. On July 3, the portable engine, chafE cutter, and aU other necessaries were on the ground. On July 4, at 8.15, the mowing machine started, and at nine the first load of grass left for the sUo, the chafEcutter being got to work at 9.15. State of grass when put in silo was as follows : first 2ft. wet with dew; next 4ft. sun-dried; and last 2ft. wet with rain. The first hamper when cut weighed 431b. ; the same hamper, when filled with whole grass weighed 381b. This quantity took forty seconds to chop. If the grass were cut wet the weight of hamper would be 661b. This day 370 hampers were fiUed in, and our average weight was 531b., giving a total of 8 tons 16cwt. Iqr. 101b. put in sUo. In addition to this, salt was added at lib. to the cwt., 176ilb., or Icwt. 2qr. S^lb. Every tenth hamper of cut grass was weighed. The grass was cut into lengths from half to one inch. One man and two horses were employed in mowing ; one man sharpening and assisting to fill carts ; two men, carts, and two horses carting grass from field to silo ; two men and two women in field S 250 Silos for Fodder Crops. Lord JSgerton's Silo. 251 TaMng and clearing ground and loading carts. At the sUo, man driTuig «ngine ; one man feeding chafE cutter, one man supplying him ; three men treading cut grass in sUo; one man spreading grass and salting; two men and one boy fiUing hampers and removing same from chaff cutter, weighing same, and also salt, and lowering all into silo. Stopped work at 7 p.m., 8ft. of grass having been put in silo, and weighed to 8 tons 16 cwt, Iqr. 101b. During the day stopped three hours for meals, and the work aU day proceeded only slowly, as all information had to be accurately taken, and much time was therefore lost. Trom 7 to 8 p.m. the weights were put on, a|ter covering the surface with IJin. boards. The weights were thirty boxes, made of l^in. wood, with handles of rope, each box being 1ft. lOin. long, 1ft. Sin. wide, 1ft. 5in. high, and contained "thirty bricks, each box and bricks being in weight about 2icwt. ; total weight, with boards, about 4 tons. 2^ acres of grass were mown this day. July 5. Weights lifted out of silo in half an hour ; mowing commenced at eight ; first load of grass at sUo at 8.20. This morning we found the ensilage had sunk during the night and with the weights a foot. Refilling therefore began at 7ft. ; same mode of operation as before, 169 hampers, averaging 581b., being put in silo, and giving a total of 4 tons 7cwt. Oqr. 181b., which added to July 4 total, gives total weight of grass in silo 13 tons 3cwt. 2qr. Salt used this day lib. to the cwt. of grass — 871b., added to 1761b. put in on the 4th, gives a total of 2631b., or 2cwt. Iqr. 111b. Mowing machine stopped at noon, and chaffcutter at 8 p.m. ; li acres mown this day ; same number of hands employed at silo, but three extra hands in field loading grass ; boards put on as before, afterwards 6in. bran, costing 31. 10s., and then the boxes of weights. Crops realised about 3 tons Icwt. per acre, and if made into hay it would have realised about IScwt. per acre. Total weight in silo — grass, 13 tons 3cwt. 2qr. : salt, 2cwt. Iqr. 111b. ; total, 13 tons 5cwt. Sqr. 111b. July 6. At noon grass level was 10ft., showing a sinkage of 2ft. 6in. On July 7, at 8.30 a.m., it was 9ft. 6in. ; and on 14th it was 8ft. 6in., having then sunk 4ft. July 27. Boxes of weights and bran cleared out of sUo ; mowing again commenced at 9.30 ; ensilage was found to be brown and quite sweet, tjiough it was slightly warm ; same mode of operation as before ; grass mown, about li acres ; weight put in silo, 3 tons 5cwt. 2qr. 61b., and fib. salt to each cwt.— 331b. ; 151 hampers, averaging 481b. The first portion of the grass put in this day was quite dry, and the remainder strong and juicy, and damp with dew. The total weight of grass now in silo was 16 tons 9cwt. 61b. ; salt, 2cwt. 2qr. 161b., making altogether 16 tons llcwt. 2qr. 221b. The total acreage mown: July 4, 24 acres; 5th, li acres; 27th, li acres— 5i acres. s 2 252 Silos for Fodder Crops. Cost of riLLiNO Silo, Tatton Park. July 4, 1883. _ £ s. A. One man driving, and hire of engine 13 6 One man feeding chafE-eutter 3 6 One man supplying liim 3 6 Three men in silo treading and ramming 12 One man in silo spreading and salting 4 Two men and one boy placing and removing hampers, 7 16 weighing grass and salt, and filling silo )0 7 One man and two horses mowing, and machine 15 Two men and two horses leading grass from field 14 Two men getting grass together in field 7 Two women raking, &o., in field 4 6 July 5. One man and engine 13 6 One man haK a day feeding chaff-cutter 16 One man half a day supplying him 16 Three men in silo three-quarters of a day 6 9 One man in silo spreading and salting 2 3 Two men and one boy as ahove ■<„ . One man and two horses mowing, and machines Jialf a day ... 7 6 Two horses and two men carting 7 Two men loading grass field 3 Two women ditto 4 Three men ditto, and rating , 4 6 291b. cheese, at 84d.,lL Os. ep.; 561b. bread, at l^d., 7s. ... 1 7 64 36 gallons beer, at 8d 14 July 27. Engine and driver 12 Four men in sHo 14 Seven men in field 110 14ilb. cheese, 10s. 3i(J. ; 281b. bread, 3s. 6* 13 9^ Beer, 12 gallons 8 Mowing machine half a day 7 6 4 6 Total ^13 10 54 Wten the silo was filled in July the side entrance vras blocked up as already stated, but the side door was opened in February for the removal of the ensilage, which was out with a hay knife, taken out in baskets, and portions of it handed round amongst those present, and a number of horses attached to the carriages and gigs were tried with it, and most of them ate it readily. To the depth of from six to nine inches it was clogged and mouldy, but the ensilage below was found firm, moist, and sweet, giving forth a pleasant odour. Owing to an unfortunate outbreak of foot and mouth disease in the neighbourhood, no cattle were on the ground ; but. Lord Egerton's agent announced that for the purpose of thoroughly testing the nutritive qualities of the ensilage eighteen feeding bullocks of average size^ind quality had been set apart, and carefully weighed, half of which it was iutended to feed with ensilage in addition to the ordinary com and cake, and the remainder with hay and turnips in place of the ensilage. Cheshire and Derbyshire Silos. 253 SILO ON THE OREWB SEWAGE FARM. On tlie recommendation of the Earm Committee, the Corporation of Crewe determined to test the value of the ensilage system for the pre- servation of fodder. Use was made of an old unoccupied building, which, after some alteration, was adapted for the end in view. Its internal dimensions are — length, 18ft.; width and depth, 12ft. The bottom is 9ft. below ground. The walls are of nine-inch brickwork, and the inside lined with cement. The bottom has been drained, and is formed of con- crete. The operation of fiEing began on Aug. 14, 1883. The grass used was a second crop of Italian rye-grass in seed, and free from any moisture except its own sap. Twenty tons of grass were chopped and deposited. In the topmost layers Icwt. of salt was sprinkled. The grass was then covered with IJin. boards, without bran or straw, and weighted with nine tons of stone, the pressure being about 1201b. to the square foot. In a week it had sunk a yard, and a few weeks later the silo was again filled to the top with chopped rye-grass and covered and weighted in a eimUar manner. A wooden roof protected the ensilage from rain. On New Tear's Day the sUo was opened. The Mayor and most of the members and officers of the Town Council were present, accompanied by numerous visitors. After a careful inspection, it seemed to be the general opinion that the experiment had been highly successful. The discolouration only extended for a few inches from the top. The mass was perfectly sweet, and emitted an odour far from unpleasant. The only apparent effect of the use of the salt was that the portion in which it had been used seemed somewhat more humid than the rest..— Crewe Guard/ian. MR. LOWE'S SILO, CHAPEL-EN-LE-ERITH, DERBYSHIRE. A LAEGE number of landowners, farmers, and others were present at the opening of a silo on the premises of Mr. J. W. Lowe, Ridge Hall, Chapel- en-le-Prith, on Feb. 25. The silo is 27ft. long, 17ft. wide, and 10ft. deep, all above ground, being formed of the stone walls of a bam, coated with cement. About three weeks were taken in the filling of the silo, during intervals of haymaking, a few loads being put in every day, and no ■covering or weights applied until completed. Mr. Lowe explained that "the ensilage was eaten greedily by his dairy cows, and also by the pigs. He said it was unnecessary either to chop the grass, to use salt, or to cover with bran, each of these being a needless element of expense. He weighted heavily with pig iron. Judging from his own experiences, he was quite confident that the system would eventually prove a grand success. He hoped landlords would construct silos for their tenants, as by doing so they would benefit their own interests as well. The farmers present expressed their opinion that the experiment was a substantial success. 254 Silos for Fodder Crops. TWO STAPPORDSHIRE SILOS. Me. Bouene, of Hilderstone Hall, near Stone, had a silo constructed in a Dutch barn. An excavation was made 31ft. long, 12ft. wide, and 12ft. deep. It was walled and double-bottomed with bricks and mortar, the sides and bottom being cemented. Being under a Dutch bam no roof was required. The cost of making it, including the planks to cover the ensilage, was 48L 13s. The silo not being completed earlier, it could not be fiUed until July 31, by which time the crop had become older than it should be. It was chaffed until the spiudle of the chaff-cutter broke, when three loads of long grass were put in to fill the silo. Planks were then laid over it, and heavy stones put on to the amount of 1201b. to the square foot. In fourteen days the grass sank 5ft. Vin., when the stones, planks, &«., were removed, the sUo filled up, replanked, and weighted. This process was gone through a third time, after which strong planks were laid across the walls of the silo, and three corn stacks were built on them. One of the com stacks having been threshed, this silo was opened on Dec. 118. The temperature on Dec. 24 was 56°. The sample of ensilage sent to me is good in colour, and has a vinous smell. The cows took to it from the first, and Mr. Bourne's bailiff writes : " "We give the cows 601b. each per day ; they are very fond of it, and are much improved in themselves, as well as give more milk. One barren cow gives five pints per day more than she did with hay. We have tried the cart horses with it, and they seem as fond of it as the cows are. I am sure our silo will prove a boon both to them and our cows." A silo was also made by Mr. John Bourne, a son of the gentlemen who built that mentioned above. A space 30ft. long by 15ft. wide, and 9ft. deep, was excavated in rocky marl on high ground. This cost 51. Over this excavation a light wooden frame was covered with corrugated iron, at an expense of 61. ; the total cost therefore of making the sUo was 161. Mr. John Bourne commenced filling it with long grass in the beginning of July. It was three times fiUed up, and was finally closed at the end of that month. It was covered with 2in. boards, small spaces being left between them to emit the air. On the boards were placed soap boxes filled with marl, well pressed in, and placed so close together as to entirely cover the sUo. The weight per square foot was 601b. This silo was opened on Dec. 1, the temperature being 80°; the animals took to it readily. The sample sent to me was far above the average, and, after being in my room for more than a fortnight, still continues good. It was not so wet as the general run of ensilage, but its smell was, and still is, like very sweet hay. I look upon the sHo as one of great interest, as it proves that first class ensilage can be in an inexpensive earth sUo. No bricks and mortar, no masons' bill, no expenses beyond the excavation of the ground, and the erection over it of some cheap covering to throw the wet off.— From a letter by Major Fitzgebald {Field, Jan. 12, 1884). Warwichshire Silos. 255 THE EARL OF WARWICK'S PRIZE ENSILAGE AT THE DAIRY SHOW, 1883. The honour belongs to the British Dairy Farmers' Association of having first devoted a prize in London to the best sample of ensilage exhibited in competition. In doing this, the management have shown spirit and discernment, recognising the value of ensilage for dairy cattle. The silver medal at the Agricultural HaU has been awarded to the specimen eent to the show by the Earl of Warwick from Heathcote Farm, Warwick, through his farm manager, Mr. Tough, from whom I had a verbal description of the successful experiment which resulted in pro- ducing so excellent a specimen truss of ensilage, that would be fit and welcome to the cattle of any stockyard in the kingdom. The forage was sound, of good colour, and had the right appetising smell which should belong to properly-made ensilage, and which is altogether distinct from the rank, fetid eflB.uvium that emanates from those foul masses of spoiled forage which sometimes pass under the name. The Earl of Warwick's Exhibit, No. 702 in the catalogue, was made from second-cut clover and a mixture of rye grass, furnished by Messrs. Carter, of Holbom, for a two-years' lay ; and here I may note that such a mixture of herbage and strong artificial grasses appears one of the most suitable for making into ensilage. The prize sample has not been chaffed. The ensilage exhibits attracted much attention and comment, and hand- fuls were asked for, to be sent offi by parcels post. The class for silos and ensUage, may be here given as a guide to other associations making up their prize list: "The entry must consist of a sample of ensilage (weighing about 561b.) the cohtents of a silo being the property of the exhibitor ; together with a model or drawing of the silo from which it is obtained, with a description of the method employed, time of harvesting, condition of season, &c., for insertion in the catalogue." Better terms than these could scarcely be put in a short paragraph. The entry from the Earl of Warwick, had a rough but complete draw- ing of the silos, with written description. They were constructed out of an old bam, the walls of which were strengthened where required by buttresses, and cross walls were built in 14in. brickwork. Across one bay thus formed, a 9in. wall made the division. Thus three silos were formed, the undivided bay holding 45 tons ensilage, reckoning 401b. to 2520 cubic feet; whilst the opposite bay, divided, would hold about half in each section. The centre of the silo would be the threshing floor of the bam. The interior walls were built 10ft. high, and cemented fin. thick. The large silo was floored with brick, the smaller silos had six inches of concrete in one case, bricks in the other. The large silo was fiUed in June with sewage-grovra rye grass, and not yet opened. No. 3 silo was unfilled. 256 Silos for Fodder Crops. No. 2 silo was filled July 23, 24, in overcast weather, but with tempera- ture at 70°, from a crop cut on the 23rd, and from this the prize sample was taken. On the first day 13 tons 7 cwt. of forage were put in ; on the second day SJ tons were added to fill the silo. The total weight of green clover was 18 tons 17cwt., and the cost (exclusive of horses) was "32 12s. 3d. — for machine man, 2s. 7(£. ; three men loading, 6s. Id. ; four boys driving, 3s. 7d. ; eight men treading 16s. ; three women raking clover together, 3s. ; labour in filling 13s. ; two sacks bran to cover top, 12s. ; Jib. salt to each 1 cwt. of grass Is. &d. ; beer, 9s. ; labour in placing weights, 5s., which were 1 cwt. to square foot. — Invicta, in the Field). Ensilage Feeding Expeeiment. SlE, — AU questions connected with the uses of ensilage have now so much iuterest for agriculturists, that I need not apologise for troubling you with the result of an experiment which has just been completed on the Earl of Warwick's Heathcote farm. At this farm there is a dairy of fifty cows, and we were anxious to ascertain what effect a certain proportion of ensilage with their food would have upon the milk. In order to test the matter fairly, Mr. Tough, who manages the farm, selected two lots of four cows each. The milk from each cow had been weighed daily beforehand, and the cows were put in two lots, so that the total yield from each lot should be as nearly as possible the same. The whole of the cows were receiving daily 401b. of mangold pulped, and mixed with 151b. of hay chaff, and 61b. of palm-nut cake and bean flour mixed. No. 1 lot were kept on this food for the three weeks the trial lasted. No. 2 lot had from 201b. to 301b. of ensilage in the place of roots. This was the only difference. We found that the cows on each ensUage varied a good deal in their appetite for it, some days eating 301b. and others only 201b. Total Percentage Total No. 1 Lot. MDk. of Cream. No. 2 Lot. Milk. of Cream. First week , . 791ilb. 69i rirat week . . 9751b. . .... 53 Second „ .. Sllilb. 56 Second „ .. 9941t. . .... 51J Third „ .. 767ilb. 56f Third „ . . lOOOilb. . .... 53J Samples of the milk were sent to Dr. Bostock Hill, of Birmingham, the county analyst, to test. He reports thereon : — The following are the results of my analysis of the two samples of milk received : No. 1 Lot. No. 2 Lot. Solids, not fat 9'62 9-40 Fat 3-81 !!!.'." 3-94 13-43 13-34 Ash 0-76 0-72 Both samples are of excellent quality. TFarwicksMre Silos. 257 I may mention that the ensilage was made from rough meadow grass. It was put in long, with Jib. of salt to the hundredweight. It came out in excellent condition. After several experiments, I prefer this propor- tion of salt to a larger one. The ensilage was chaffed along with the lay, which will be found to prevent the clogging of the knives, of which some have complained. The trial promises well for the future of ensilage, and when the relative cost of this and roots is taken into account, the result is even more satisfactory than appears at first sight. "Wm. T. E. Fosbeet, Warwick, April 9, 1884. Agent to the Barl of Warwick. MESSRS. TBEPPLIN'S SILOS IN WARWiCKSHIEE. Messes. Teepplin farm something over three thousand acres, which for the greater part lie round the picturesque old ruin of KenUworth. The land is split up into twelve holdings, the buildings of which are antiquated and decidedly inferior. It is necessary to mention this to show that the appliances which have here been used to produce ensilage are within the reach of any agriculturist. The Messrs. Trepplin, at a very small outlay, have utilised the present buildings to the best advan- tage. In 1883 they comme'nced to build three brick sUos — two dug out of the side of slopes, and one erected against the end of a barn. In building one of the former they unfortunately dug to water, and, as time was pressing, the task was relinquished, and the bays and floors of the bams were requisitioned. Thus these gentlemen have preserved over Jive thousand tons of fodder. At ViUiers Hill the barn was filled with rough meadow grass, clover, and sewage grass, carried at different intervals, and in all weather, even when it was raining hard. The grass was not passed through a chafE- cntter, but unloaded into the sUo as it came from the fields, the mowing machine going round the crops and the carts following it. The means adopted to prepare the bam for its contents were very simple. There were no drains inserted, nor was the floor, brick or soil, meddled with; in fact, nothing was done except to fill up the cracks in the walls where it was thought necessary. These were shored on the outside ; but this was found to be unnecessary. Horses were used to tread the grass as it was thrown in. The grass was stacked at harvest time, and as it subsided was fiUed tip again for a period of a week or more. Notwithstanding this it sank fully 5ft. after the weights (which consisted of boards and stones) were placed upon it for the last time. The side at one end was open, yet it presented no material difference from the sides close to the ■ wall. There was but little mould apparent, certainly not an inch thick at ■the edge, about a couple of inches or more at the top, while the bottom appeared to be sound. That which had been carried wet was black, where 258 Silos for Fodder Crops. it had been carted dry it was brown, while some of the sewage grass was a f aiat green. The smell was by no means unpleasant, strong and vinous,, and not sour. The mass was still hot and moist almost to wetness. Everything upon the farm partakes of ensilage, it being cut up into chaff" with straw which somewhat dilutes its pungency of aroma and renders it most appetising. Mr. Trepplin states that the feeding stock on first being brought in from the fields were greatly given to scouring, a complaint which ensilage has entirely eradicated. At the East Ohase farm was perhaps one of the best samples of ensilage. It was clover of a light brown colour, and appeared to be very sweet. It was in the bay of a barn and had been subjected to great pressure. The front was left bare ; but the top had been covered with loose sand. There was very little mould observable. The other side of the barn was occupied with more ensilage, but in this case no pressure had been resorted to beyond that which the filling necessitated. Tet the mass had sunk eight feet. It was merely covered up with straw, though the side which under ordinary circumstances would have been bare was boarded up. On trying to get a sample from the top we found a few inches had rotted. Underneath was a faint green coloured sample, of good odour. This was meadow grass, and was ricked early in September. At the Eernhill homestead the thrashing floor of the bam had been filled, together with the bays, and a section was cut from the doors; consequently one side had been exposed to the air for nearly a month. This had rotted to the extent of a few inches, but beyond that was perfectly sound, and although quite black was eaten. It was clover got in July, and carried on some of the most rainy days. Nevertheless even in this state the part exposed to the air will not decompose or become mouldy for quite a week. At Goodrest there was just a truss left on the threshing floor of the bam. This was meadow grass gathered in September. It had had no pressure placed upon it, and was, as the sample under similar conditions above, of a faint green colour. Even this smaU portion stiU retained its. moisture, and was highly scented. Mr. Trepplin has demonstrated that many a crop of grass which in September is practically worthless, and which more often than not is trodden into the ground, can with little labour be converted into valuable fodder. In his case no expensive silos have been erected, but the ordinary buildings of every farm have been found sufficient for the purpose. Messrs. Trepplin milk two hundred cows and they are all fed with- ensilage, as also are the cart horses. Their condition testifies that it does not disagree with them, but as said before it is given them with straw as chaff. [The above is condensed from a long article in a local journal, the name of which was not mentioned on the extract sent to us. A question having been asked in The Field as to the ensilage made without being- weighted, Mr. C. Trepplin replied that, " The herbage was short grass,. Gloucestershire, Sfc. 259 cut in September, in meadows shut oJBE late. Being carried damp, it settled down qiiickly, and, after being coTered with some old hay or a few boards, it turned out as good as the ensilage made in the summer and weighted heavily." — Ed.] LORD PITZHARDINGE'S SILOS AT BBEKELET. LOBD ElTZHAEDlNGtB and a large company of gentlemen and tenantry assembled on Dec. 12 at the home farm, Berkeley Castle, to witness the opening of one of three silos which his lordship has had constructed. The silo was built of brick in a barn, cemented inside ; it is 12ft. Sin. long, by 7ft. 6in. wide, and 10ft. lOin. deep. On June 9, 15 tons of newly- mown grass was cut up with the ohafC-cutter and placed in the sUo, 21b. of salt to the cwt. being added, and sprinkled over the grass as it was being put in. This was closed up till Aug. 13, when it was opened and filled up with 12 tons of clover, put in green in the same way as the grass. It was then planked on the top and pressed down by placing 2 tons 12 cwt. of bricks on the top (about 631b. to the square foot), after placing a layer of bran all over to keep it free from air, and was not opened tiU Wednesday. On being cut, the top layer of the ensilage was found to have a strong and very unpleasant odour, but lower down where the density of the ensilage had increased, the unpleasant odour diminished. With this exception it was perfectly fresh. Mr. J. Peter, the farm stewa,rd, gave some to the cows, who ate it freely, but th» horses would not eat it. A good many expressions of opinion were given both in favour of and adverse to the use of ensUage. — The Farmer. At a meeting of the Gloucestershire Chamber of Agriculture, on Jan. 12, 1884, Lord Fitzhardinge said he believed he was the only person in the county who had carried out the system of ensilage, and he read a short report of the results. The food of the dairy cows had been varied, ensilage being given with and without dry hay chaff and certain quan- tities of oatmeal, and records kept of the yield of milk. The result appeared to be that there was little, if any, difference in the quantity of milk produced; but his lordship said the cream was a good rich colour, and the butter excellent, when the cows were fed on ensilage. — Live Stock Jcmrnal. MR. CUNARD'S SILO, KEVILL HOLT, MARKET HARBORO'. Mk. Cttnaed had a sUo formed by walling ofE a portion of an old barn, and cementing the inside. It was filled with clover, carried immediately on its being cut, chopped up with a chaff cutter, and mixed with 21b. of salt to every Icwt. of grass. After being well trodden down, shutters were put on the top, and weighted with large blocks of stone. When opened in January it was in good condition, and the beasts ate it greedily.. 260 Silos for -Fodder Crops. LORD WALSINGHAM'S SILOS AT MERTOJST. [In the Wayland Hall, Watton, Norfolk, on Feb. 5, 1873, Mr. Henry Woods, of Merton, delivered a lecture on " Ensilage : its Origin, History, and Practice," * to a large assemblage of landowners and tenant farmers. After speaking on the origin and history of the process, and what had been done in other countries, and in various parts of England, Mr. Woods related what had occurred within his own experience :] In the montli of July, 1881, we had a small silo constructed on the ground floor of a granary. Its internal measurements were 8ft. 4in. long, 4ft. wide, 4ft. 4in. deep. In August we made our first experiment, which was a sharp and trying one. The chaff with which I experimented was made in equal parts from second-crop red clover and rank-grown succu- lent grass, out from a pasture which had been heavily folded with cake- fed sheep. The grass and clover were both cut and carted in a drizzling rain. The chaff when made was at once put into the silo. It was salted at the rate of lib. of common field salt to Icwt. of grass chaff, and was trodden down as firmly as possible. A layer of salt, in thickness about an inch, was placed on the top of the mass. It was covered with two wood shutters, upon which we spread a layer of bran, 9in. in depth. The whole was weighted with large stones, weighing together about three- quarters of a ton. After the lapse of about three months we opened our little silo. We found some of the contents to be useless. The upper portions of the ensilage, to the extent of a third of a foot, were in a state of decomposition, and unfit for feeding purposes. Decomposition was also at work at the bottom of the silo. Its extent was some four or five inches, But beyond these upper and lower layers, although so wet that water could be squeezed out of it very easily, the chaff was quite green and fresh, and had a strong aromatic and acid-like smell. At the outset the cows when offered the food did not take kindly to it ; but in the course of two or three days they manifested a fondness for it, and ate it freely. Our success was only partial ; but other experiments, on a much larger scale and somewhat different plan, w ere arranged, and we determined to profit by the lessons of our first trial. We converted one bay of a clay- built barn, at Merton, into sUos. Across the bay front we put up a 14in. brick wall to within 3ft. lOin. of the tie beam, and two division walls of the same description, which gave us three silos, each 14ft. 4in. in length, 6ft. Sin. in width, and Oft. Sin. m depth. The barn floor was laid with asphalte some years ago, and there- fore the silos required no new bottom. We covered the walls with cement plaster, composed of Portland cement and well-washed road sUt, in the proportion of three of cement to one of sUt. This coating, which was * This lecture has since been published with additions, and plana of the buildings, by Messrs. Stevenson and Co., Market Place, Norwich. Lord Walsingham^s Experiments. 261 about half an inch in thickness, answered well in every respect, and showed, I think, that even clay-huilt bams are easily convertible into good silos. To prevent the brickwork being displaced in the filling process, a 2iin. plank, 14in. wide, was properly secured to the wall tops, and to facilitate the emptying of the silos a well-made l^in. boarded door, pro- tected by a coating of hot tar and pitch, was inserted in one corner of the front wall of each silo. The frames of the doors were set on the inside, so that the doors opened inwards to the partition walls, and the apertures were hermetically sealed by means of 4in. brickwork on the front sides. The total cost of these three silos did not exceed 30?. It was my serious intention that the experiments we made should not err on the side of leniency. With this object I used coarse common grass for the test. (Referred to in the Analysis as No. 1.) Two of the silos I directed to be filled vrith grass taken from an oak wood, known as Merton Wood. For some years I was in the habit of giving the grass to any respectable person who liked to cut it for litter. During the past few years no one has cared to have it. They have said, " It is such poor stufE, if it once gets wet after being cut there is little chance of getting it dry again ; it is then useless even as litter." Tou may therefore con- clude that if the ensilage system, when applied to grass of this coarse and common character, has been at all successful, much greater things are to be gained from a finer and better sort of material. The ensilage in the third silo, I may add, was from grass grown in a rough meadow. (Referred to in the Analysis as No. 2.) The silos were filled uninterruptedly, in the course of three or four days, early in July. Although the weather was dull and sunless, there was no rain. The grass was loaded on to waggons as it was cut, and conveyed direct to the chaff-cutter. Amongst each cwt. of chafE 21b. of common field salt was distributed.* Let me here say, once for aU, that a great deal depends upon the treading and ramming process. The more effectually this is done the better will be the ensilage. When the silos were quite filled, the chaff having been as well-trodden and rammed down as possible, the contents were covered with wood shutters, and over these we spread a bed of coarse bran, about eight inches deep. For weights we used a lot of clean flint stones, in wicker skeps, which cost a shilling apiece, and which win last for years before requiring to be renewed. The pressure, which we carefully distributed over the whole surface, was little more than a ton and a half in each sUo, which contained about fourteen or fifteen tons of cut grass. Three weeks after the filling of the silos the ensilage had shrunk to about a third of its original depth. We then removed the weighted baskets and bran covering, again fiUed the silos to the top, and replaced. the boards, bran, and skep-weights. Little labour and no difficulty attended this operation. The skeps were lifted on to the partition walls, while the bran was put temporarily into sacks. An accurate and detailed account of aU the expenses incurred for the filling * Mr. Woods has since reduced the salt to about fib. per owt. 262 Silos for Fodder Crops. was kept by the farm bailifE. The amount did not exceed 8s. 6d. per ton, or 12s. 9d. per acre, the crop averaging about one and a half tons per acre. There was but slight heat, and no mouldiness visible when the shutters were removed to refill the silos ; and it is also a fact worthy of notice that in the ensilage now used from them there is nothing to indicate where the later filling began. With regard to the cost of making ensilage of grass, as compared with that for the same weight of hay, we had no actual data to guide us to a definite conclusion. But I was desirous of getting some reliable practical estimate, and through the kindness of Mr. W. BiddeU, M.P., of Lavenham HaU, Suffolk, and Mr. T. Gayford, of Wretham, Norfolk, gentlemen of great experience and ability as valuers, I have received particulars which enable me to state that in tfa average season the cost of making one and a haH tons of grass into hay, stacking, and afterwards cutting into chaff, is from 25s. to 26s. per acre. From this it will be seen that our ensilage was produced at a saving of 60 per cent, on the cost of ordinary haymaking and chaff cutting. Five months elapsed (Dec. 11) before we opened No. 1 silo. On removing the covering the thermometer registered 61°. This temperature obtained to a depth of about two feet, when there was a considerable fall, and still lower down it was quite cold. We fetched the ensilage over the top, untU we had cut down a section sufficiently large to admit of the sealed door being opened; after which it was carried out through the doorway in the usual manner. Now, as to the quality of the ensilage. The grass we packed was very inferior to that used for the small Trial Silo in 1881-82 ; yet there was such a marked superiority in the quality as to strike aU of us with surprise. This improvement I attribute to three causes, viz. — ^not having cut or carted the grass in a wet state ; using about 21b. of salt instead of lib. to each owt. of grass ; not putting a layer of salt beneath the shutters before closing the silos. This year the ensilage is nicely moist ; but no water can be squeezed from it, and it is quite free from mould. Whegi first given them, the horses, cows, and young stock ate it readily, and have since continued to do so. The horses, to which we give one-third ensUage to two-thirds chaff, are doing remarkably well. Value op Ensilage' toe. Daiey Cows. In order to ascertain the effect of ensilage on the cows. Lord Walsingham suggested, shortly before opening the silos, that the milk and cream, before and after the ensilage feeding, should be carefully tested, and the results tabulated. For this purpose 1 selected five pedigree shorthorn cows, which dropped calves on July 27, Oct. 27, Nov. 24, and two on Nov. 30, 1882. Previous to giving ensilage, each cow was daily fed with 61b. of crushed oats and 31b. of bran, mixed with chaff (composed two- thirds of barley straw and one-third hay). The five animals yielded, on Dec. 10, 68 quarts of milk, which the lactometer showed contained 12 degrees of cream. We commenced feeding with ensilage on Dec. 11, Lord Walsingham's Experiments. 263 And the following tables give the daily diet and yield from Deo. 14 to Jan. 10. Besides the proportions of ensilage and chaff, the oats and bran were given as before in each instance. i Ensilage, | Oliafl. J Ensilage, J Chaff. f Hhsilage, i Chaff. 1 Ensilage, i Chaff. S .hi 1 S -3 a s i i 1 •H a § a D fl S i o a g o 1882. Qts. Deg. 1882. Qts. Deg. 1882. Qts. De^. 1883. Qts. Deg. Deo. 14 70 13 Deo. 21 71 14 Dec. 28 72 15 Jan. 4 78 16 „ 15 70 13 „ 22 70 14 „ 29 72 15 „ 5 80 16 „ 16 70 13 „ 23 70 14 „ 30 74 15 „ 6 80 16 „ 17 70 13 „ 24 71 14 „ 31 1883. 74 15 „ 7 81 16 „ 18 70 13 „ 25 70 14 Jan. 1 76 16 ,. 8 82 16 „ 19 70 13 „ 26 70 14 „ 2 76 16 „ 9 82 16 „ 20 70 13 „ 27 71 15 „ 3 77 16 „ 10 82 16 I will be observed that on Deo. 14, three days after the ensilage was first given, the nulkhad increjdeed by two quarts with a rise of one degree in the cream. This went on until the 20th. On the 21st the cows gave seventy-one quarts of milk with fourteen degrees of cream, the latter showing another rise of one degree. On the 22nd and 23rd, and the 25th and 26th, they seem to have fallen back to the extent of a quart of milk per day, which was probably owing to the cold wet weather which we experienced at that time ; but, on the 27th, the lost quart was recovered, "the supply again reaching seventy-one quarts and the cream making a further advance to fifteen degrees. The quantity rose on the 28th another qujart (seventy -two quarts), and on the 30th and 81st seventy-four quarts -were registered, with no change noted in the state of the cream. New Tear's day brought us seventy-six quarts and sixteen degrees of cream. On Jan. 4 another quart was gained ; on the 5th and 6th eighty quarts vrere given ; on the 7th, the return rose to eighty-one quarts : and on the 8th to eighty -two ; these figures continuing to be recorded down to Jan. 10, when the test ended, and when the greatly improved quality of the cream had undergone no change. When the month's trial concluded we had raised the milk return by fourteen quarts per day, and the quality of the cream to the remarkable extent of four degrees. The tables also show that the increase in the quantity of milk and improvement in the quality of the cream correspond witt an increased amount of ensilage given to the cows. Milk Analysis. We were naturally anxious to test the quality of our ensilage milk by analysis, and on Jan. 9 we sent two samples to Mr. Francis Sutton, P.O.S., of Norwich, who, besides holding the position of County Analyst, is Analyst to the Norfolk Chamber of Agriculture, and whose high attain- ments are bo widely known that I need not say another word about his 264 Silos for Fodder Crops. qualifications. No. 1 sample was the milk of cows not ensilage-fed ; No. 2 came from the five cows, the subjects of the test. The following is Mr. Sutton's report : — No. 1. PTirefat 2-76 .... Sugar, casein, albumen, &c 9 '37 "Water 87-87 .... No. 2. 311 9-82 87-07 100-00 100-00 Mineral matters (ash) 0-70 0-75 Specific gravity at 60° 10-30 10-32 This analysis, you will observe, is in favour of the No. 2 (ensilage) milk in every respect. Whilst in pure fat there was an increase of 0-35, and in sugar, casein, albumen, &c., of 0'45, there was a decrease of '80 water. Mr. Sutton also -writes to me as follows : " From my examination of the ensilage, so far as it has now gone, I should be quite prepared to beheve in its value as a milk-producing food owing to the great proportion of soluble nutrition in it. These results have fairly surprised me, and when you get them I feel sure they will have the same effect upon yourself." It is a striking fact, not to be passed over, that two cows which had been fed with ensilage, on being deprived of the food for a couple of days, gave three quarts of mUk less each day. Analyses of the Ensilage. As to the constituent properties of our ensilage, it would be beyond the pro-vince, and also the competency, of a layman to speak. Lord Walsing- ham, gratified as he might well be with the milk -pail returns of the cows, was extremely anxious to get as full and exhaustive analyses of the ensilage as possible. We therefore sent two sets of samples of the food to Mr. Sutton, and samples of hay made from grass of the same description as the ensilage, for the purposes of comparison. The first set (Nos. 1) consisted of ensilage made from grass, which I have described as grown in the wood, and hay from the same kind of grass. The second set (Nos. 2) comprised ensilage made from the coarse grass grown in the meadow near the wood, and hay made from grass cut in the same meadow. The results of the analyses are set out in the following table : General Composition— Natural State. Dried at 212° Fato. Hay No.l. Hay No. 2. Ensi- lage. No.l. Ensi- lage. No. 2. Hay No. 1. Hay No. 2. Ensi- lage. No. 1. Ensi- lage. No. 2. ■Water 22-20 8-21 4-05 61-04 4-50 24-90 9-75 8-16 58-50 3-70 74-80 6-24 1-78 16-91 0-77 6S-95 9-17 1-88 22-18 0-82 10-56 5-20 78-50 6-75 13-00 4-20 77-85 4-95 24-28 6-92 65-80 300 Soluble organic matter 27-00 5-55 65-06 2-40 100-00 100-00 100-00 100-00 100-00 100-00 100-00 100-00 Jbord IV alsing ham* 8 J^xperiments. 265 Detailed Composition— Natural State. Dried at 212° Fahr. ^ater 22-20 0-78 603 7-48 1-29 20-80 33-92 4-OS 4-50 24-90 0-88 7-09 8-87 1-34 19-80 30-27 3-15 8-70 74-30 1-60 1-41 4-64 0-72 8-28 6-50 1-78 0-77 65-95 2-12 1-43 7-06 0-89 10-62 9-24 1-88 0-82 0-94 6-46 9-61 1-54 26-73 43-74 6-20 5-78 1-17 9-46 11-85 1-80 26-85 40-25 4-20 4-93 6-32 6-49 18-06 2-80 32-24 25-26 6-93 8-00 Albumen and protein Bubstances soluble in water* Insoluble protein compoundsf... Sugar,gum,and extractive matter 6-23 4-20 20-73 Oil, wax, and chlorophyll, Ac. ... 2-60 31-17 Indigestible woody fibre 27-14 6-63 2-40 100-00 100-00 100-00 100-00 100-00 100-00 100-00 100-00 0-115 0-796 0-910 6-760 0-140 1-120 1-260 7-970 0-256 0-221 0-476 3-010 0-336 0-226 0-562 3-557 0-149 1-020 1-169 7-400 0-186 1-490 1-676 10-63 0-992 0-860 1-862 11-72 0-990 0-66S Total percentage of nitrogen . . . Equal to total protein compounds 1-656 10-47 I take it that the satisfactory nature of these results is plaiu to the meanest capacity. But Mr. Sutton has rendered us, and I may say the whole agricultural community, essential service by appending a singularly lucid and able report to his analyses. The importance of his conclusions, in their probable bearing upon the ensilage controversy, could scarcely be over-rated. As to what those scientists who have formed hasty and dog- matic opinions upon confessedly insufficient data may have to say to it, and how far they may hereafter be constrained, by the hard logic of facts, to modify their views, we have nothing to do. They are matters into which it is not needful, nor would it be profitable, for us to enter now. In giving publicity to this report, all I would venture to observe, by way of note or comment, is that my practical experience in the management of live stock, extending beyond a generation of time, thoroughly confirms what Mr. Sutton has so intelligently expressed. "Rbpoet on the Analyses of Hat and Ensilage. " County Analyst's Office, Eastern Counties Laboratory, London-street, Norwich, Jan. 17, 1883. " The two samples of hay consisted of a variety of grasses, many of them of a coarse description and of poor quality, and were destitute of the sweet smeU and taste which always accompanies weU-made meadow hay of good quality. " The texture of No. 2 was, however, preferable to No. 1, and the grass of a somewhat finer description. " Both specimens of ensilage were, on the contrary, highly odoriferous from the development of the essential oils peculiar to the various grasses, and had also a vinous smeU accompanied -with a slight but pleasant acidity. " The smell of essential oils was so persistent that after handling the ensilage for some time it became very difficult to remove the smell by washing. On distilling some of the material with water, these essential flavours were carried over into the distillate, but, though powerful, the quantity of actual oil was too small to be separated. 266 Silos for Fodder Crops. " The hay treated in precisely the same maimer gave no trace of essential oils, or any flaYour whatever except that of decaying grass. " In addition to the detailed analyses recorded in the tables, the ensilage Nos. 1 and 2 were both examined for the amount of acidity; this was found to be very much the same in both samples, and, taking it as acetic acid, the proportion was found to be respectively 0'34 and' 0'36, or about one-third of a per cent. " The alcohol was estimated in No. 2 ensilage, and amounted to 0055 per cent, by weight, or about one-tenth of a per cent, of proof spirit. " These proportions are very small, and they arise, of course, from the conversion of a small proportion of saccharine matter in the original grass, but their development is open to no objection when kept withia moderate limits ; on the contrary, they add to the fragrancy and taste o the substance, and undoubtedly render it more acceptable and probably more digestible as a food. " If the effects of the silo were only to render what would otherwise be a tasteless, dry forage into a fragrant, appetising, and succulent food it would be a decided step in advance ; but the analyses will show tha much greater changes of a beneficial nature occur during the process. These changes are especially shown in the large proportions of soluble flesh-formers and fat-producers as compared with the hay. " For instance, in the case of No. 1 ensilage, the soluble albumenoids (or flesh-formers) are increased more than six times, and in No. 2 more than five times ; while, in the case of sugar, gum, and extractive matters, the proportion is nearly doubled in both instances. The digestible fibre is also increased fully 20 per cent, in both samples of ensilage. " These facts are of great importance, and well worth the attention of all stock feeders, as it is evident that the occurrence of these nutritious constituents in a really soluble form is so much labour of mastication and digestion saved to the animals who are fed on such food, as compared with dry hay. " The change induced by the silo is, in fact, a partial digestion or limited fermentation ; and undoubtedly such food will prove much easier of digestion and assimilation than crude hay. " There are apjparently two anomalies in the figures of analysis which it may be proper to notice. The first is the apparent increase in fatty matters in the ensilages as against the hays ; this probably arises from matters like chlorophyll, &c., which are converted into a less soluble form in the process of drying through which the hay has passed. The second is the amount of nitrogen in No. 1 ensilage as compared with its hay. " The total protein compounds (flesh-formers) are recorded as beiag 4 per cent, higher. This can hardly be the fact, as, of course, the silo has no power to originate nitrogenous constituents ; it can only modify them. The difference probably arises from one of two things — either that the sample of ensilage taken for analysis contained rather more of the seed vessels or other richer nitrogenous portions of the plant than the corre- Lord Walsingham' s Experiments. 267 spending sample of hay, or it may be due entirely to tlie dijEBerent periods of growth. " In conclusion, it is abundantly evident, so far as these analyses can show, that the sUo has produced a succulent, easUy digestible food, fuU of aroma and nutrition, from a very poor quality of grass. " Peancis Sittton, " Chemist to the Norfolk Chamber of Agriculture." A Teiai, with Ewes. [A few weeks later Mr. Woods sent the following letter to the Meld.'] Desiring that the independent opinion of some reliable person should be obtained as to the effect of the ensUage on in-lamb ewes, I induced Mr. Thomas G-ayf ord, of "Wretham, near Thetf ord, who is widely known as a thorough man of business and as an eminently practical flockmaster, to undertake a trial on ten ewes, which were, with one exception, taken indiscriminately from a lot which had been selected from the general flock because they were low in condition. The ewe which formed the exception referred to was a notoriously bad milter, and it was desired to see what efPect the eusUage would have on this particular ewe. I am glad to be able to report that the result of the trial has been most satisfactory; and I venture to think that it would be almost impossible, judging by the facts elicited by Mr. Gayf ord's experiment, to over-estimate the importance of ensilage to flockmasters, and particularly in a severe winter, or in a late sterile spring, when ewes urgently need a succulent, palatable food. Writing one day last week, Mr. Gayford says : " The effect of the ensilage food on the miLfc of the ewes is most decided. The two which first lambed were (to use the shepherd's own words) ' smothered with milk ' ; and another, which I examined just after she had lambed, had a famous bag ; and the milk was as golden in colour and as rich looking as if it came from the udder of a fresh-calved Alderney cow. The remainder of the ewes under trial all did weU, and it is particularly noteworthy that the ewe which had always given so little milk on her previous lambings improved so much under the ensilage food as to give as much mUk as any ewe in the general flock fed in the usual way. " The extremely satisfactory result of feeding the ten trial ewes on ensilage, as regards their milking condition, has made me, as a flockmaster of thirty years' standing, to feel what a boon this new food will undoubtedly prove to be to flocks of breeding ewes on large tracts of light land in the eastern counties, and doubtless in other counties also. The large quantity and rich quality of the milk of the ewes under trial, after the past excep- tionally mild winter, surely indicates how great will be the value of ensUage in a severe winter, when we are at our wits' end to j)rocure a minimum supply of succulent food for our ewes. I have known many winters and springs when there has been unavoidably heavy loss and expense incurred from the impossibility of providing any succulent food, and outU now nothing has been foimd to supply this indispensable T 2 268 Silos for Fodder Crops. requirement for nursing ewes. It appears to me that this introduction of ensilage comes most opportunely, for never, during the present century, has the success of light-land farming depended so much upon sheep as now, nor have sheep ever been of more, if of so g^eat, value." With regard to the financial side of the question, my practical corre- spondent writes : " When the fact is generally understood that ensilage can be secured at about two-thirds of the cost of hay, that its production is almost wholly independent of the weather, and that the grass on the parts of the fields near the fences may be converted into ensilage, leaving the better drying portions and centre for hay, surely it will be true wisdom for flockmasters at least to give the matter a fair trial during the coming season." On the cost of sUos Mr. Gayford adds : " I was talking yesterday at Bury St. Edmunds market with a very practical man, who held, like many others, the erroneous idea that sUos must be made either underground, or vrith very strong thick walls to withstand the swelling from the supposed fermentation. This is one of the errors that lead farmers to suppose that sUos are extremely costly in their con- struction, and the more widely your pamphlet is read and this nonsense dispelled, the better." Seeing that breeding sheep are the sheet anchor of the light-land farmers, that it is only on these they can rely with any hope of success in these most disastrous times for agriculture, the foregoing testimony of Buch an experienced flockmaster to the merits of ensilage as a succulent food for sheep seems to me to be of great importance. Merton, Thetford, Norfolk, March 20, 1883. Hbnet Woods. On Monday, March 17, 1884, a lecture was delivered by Mr. H. Woods, at South Kensington Museum, on the influence of ensilage on British agriculture. The lecture, which was one of a series arranged by the OounoU of the Institute of Agriculture, was honoured by the presence of H.R.H. the Prince of Wales, who took the chair on the occasion. After some remarks on the depression of the agricultural interest, and the ever-increasing importation of wheat from foreign countries, the fact that the poor lands now going out of cultivation were growing nothing but coarse grasses that could only be profitably utilised in the silo was insisted on, Mr. Woods stating that the grass from under the trees in an oak wood, which in the recent state was useless as food for either horses, cattle, or sheep, made excellent ensilage, which was advantageously used for milch cows in November. The employment of a movable super sUo 30in. in depth, to obviate the necessity for re-opening the silo to make good the loss of bulk through shrinkage, was described. And a great reduction in the amount of salt originally advocated by Mr. Woods was now insisted on. The lecturer stUl advocated the employment of bran as a covering to boards placed on the ensilage. The amount of weight used at Merton was stated to be 701b. to the square foot, Lord Walsingham's JExperiments. 269 being applied by means of boxes filled with gravel, each box being 24in. by lOin., and ISin. in depth. These hold about 2cwt. of stones, The desirability of chaffing the materials employed was strongly urged by the lecturer. With regard to the relative value of ensilage and hay, the follow- ing were the remarks of the lecturer : " To test the relative weight and value of grass as ensilage and hay, we put into the silo an acre of heavy meadow grass. It weighed 12f tons and- produced 12 tons of ensilage. An acre of the same made into hay weighed 2 tons 7cwt. Take the value of the ensilage at 11. 6s. ^d. per ton, only one-third the value of hay, which I am aware is much too low an estimate, but I have adopted it in this and the other calculations which I am about to bring under your notice, being desirous of keeping well within the mark and of allowing, beyond all question, a margin sufficient to meet any possible contentions on the part of sceptics ; then deduct the incidental expenses, including an aUowanoe of 6L 12s. 4:d. per cent, on the cost of building a silo, and of 35s. an acre for rent and tithe, together amounting to SI. 4s. 9A., and we have a balance to our credit of lOZ. 15s. 3d. Deducting from the return of the 2 tons 7cwt. of hay (valued at 91. 8s.) Zl. 8s. 2d. for mowing, making, stacking, chaffing, and rent and tithe, we have a net balance of 6Z. 19s. Kid., showing a sum of U. 15s. 6d. per acre in favour of the ensilage as against the hay." In the case of buckwheat, the balance was regarded as 2Z. 8s. Zd. per acre in favour of the ensilage. In the case of green oats out in July, the balance in favour of the ensiled crop, was regarded aa 4L 19s. lid. per acre in excess of the grain and straw if harvested when ripe. The cultivation of spurrey as an ensilage plant for light sandy soils was strongly insisted on as being adapted for soils which are otherwise perfectly sterile, not growing either grass or clover. Spurrey (Spergula arvensis) is an annual plant of the pink family (OaryophyUacese), and is largely cultivated in different parts of the Continent. It yields a rapid crop of succulent herbage. "When ripe, the pods burst, and shed a great number of black seeds, which are said to be equal in nutritive value to rape cake. These seeds are bruised and given to horses and mUch crows, and have the effect of increasing the quantity and improving the quality of the mUk. Abounding on inferior light soils, the plant is greedily eaten by sheep and cattle, and is described as an eminently nutritious herbage, yielding a better pasture than red or white clover; the cows giving more and better milk. The experimental crop of spurrey at Merton yielded most excellent food for sheep and cattle, although grown on blowing sand, so poor that its cultivation had been abandoned. When cut it yielded 5i tons per acre, and produced such exceUent ensilage that 120 acres are to be grown this year. The seed cost 45s. per cwt., which is at the rate of 5s. lU. per acre ; and the total expenditure per acre on account of seed, cultivating, ensiling, and 270 Silos for Fodder Crops. all other incidental expenses, including interest on silo building, amounted to 2L 8s. 6d. In its natural state the spurrey weighed 5i tons, and when ensiled 5 tons per acre. On the already adopted basis of one-third the value of hay at 4?. per ton, it produced 6L 13s. 4(Z. per acre. Deducting the incidental expenditure, allowing for rent 3s. (the price at which the land, now unlet, was valued to a tenant some years ago), the net profit amounted to 4:1. 4s. lOd. per acre. The utility of maize ensHage, and its high value as compared with swedes was then insisted on. A test of the relative feeding value of maize compared with swedes showed important results. The trial made with two cows extended over a month. One cow had a daily aUowance of 421b. of ensiled maize, with 101b. of straw chafE, 81b. of maize meal, and 2Ib. of bran, and the other precisely the same allowance of food, except that 701b. of swedes were substituted for the ensilage. While in the former case the supply of milk rose from a daily average of 11| quarts to 14 quarts, and the cream from 11° to 13f ° ; in the latter case the increase of milk was only from 11 quarts to 12^, and the cream from 11° to 12f°. The ensilage-fed cow also gained 4st. in weight, the other but 2st. A similar improvement in condition having been noted in the case of the other cows fed with ensilage, the bailiff reduced their daily allowance of maize meal by 21b. each. Equally satisfactory evidence was given of the suitability of ensilage as a food for sheep. The employment of cask-made ensilage for cowkeepers in town and on ship board was recommended. A 60-gallon cask will contain 31st. of ensilage ; a quantity sufficient, with a little hay or chaff, and maize meal, to feed a cow nine or ten days, and the animal would require much less water than when fed on dry food — a most important consideration on board ship. The complete lecture, together with analyses, &c., has since been published by Messrs Hamilton, Adams, and Co., Paternoster-row, London. MARQUIS OF BRISTOL'S SILO, lOKWORTH, SUFFOLK. The silo was built with 14in. brickwork, with piers and stout oak planks, and iron rods to prevent the building from bulging by lateral pressure. It is in two compartments, each 18ft. long, by 9ft. wide, and 10ft. deep ; rendered inside by Portland cement fin. thick, and the floors are con- crete rendered with Portland cement |in. thick. It was filled on July 19 and following days with rough grass cut into fin. lengths. The grass was very wet, as it was raining heavily at the time. It was rammed down close by manual labour, covered with 6in. of bran, and weighted by planks upon which bricks were laid. The doors were closed and bricked up with 9in. brickwork on July 23. Salt was applied in the proportion of lib. of salt to Icwt. of grass. On being opened on Jan. 18, there was no mould, with the exception of a very small quantity by one door-post,, and the mass of ensilage appeared in an excellent state. Suffolh Silos. 271 THE DUKE OF HAMILTON'S SILOS AT GREAT GLENHAM. The Pound Farm, consisting of about 320 acres, is hired and literally worked, in so far as giving orders and finding tlie money are concerned, by the Duchess of Hamilton. Two silos have been built ; one was filled in the early part of the summer and the other in September, the former being first opened. A field had been laid down with rye-grass, clover, and a few other seeds. The crop was carted direct to the bam, cut into chaff, placed in the silo forthwith, and rammed down with wooden rammers, l^lb. or 21b. of salt being added to each cwt. of stuff. When feeding experiments were commenced the results were eminently satis- factory. The cattle ate ensilage greedily, mixed with beet-root. The com with which they had been previously fed was taken off, and the animals have since thrived on this ensilage, apparently none the worse — on the contrary, if there is any difference it is for the better. Mr. Smith found the quantity of salt excessive, the tendency being to cause the animals to drink too freely, and it is his intention to reduce the quantity of salt in future. — Ipswich Journal. COLONEL TOMLINE'S SILO, ORWELL PARK, SUFFOLK. Mk. Henby Woods, in his Norfolk lecture, gave the following particu- lars of Colonel Tomline's silo: "In the early part of 1882 a sUo, 26ft. in length, and 12ft. in width and height, was built under the side of a hiU, with an opening at each end ; one for filling, on the ground level, and the other for extracting the fodder. The walls and floor were of concrete (the former a foot or more in thickness). In July, the produce of eleven acres of oates, in the green state, was passed through the chaffcutter, and stored in the sUo; eight men being engaged in the work, which was carried on in showery weather, and completed on Aug. 12. The covering consisted of three loads of grass and one of straw, and planks weighted with boxes filled with stones, bricks, and shingle— about 15 tons altogether. On Dec. 1 the silo was opened. The outer coating of the ensilage was mouldy and rotten, but beneath it was bright, cool, and moist, and gave off a strong alcoholic odour." Mr. H. Stevenson, thefai-m baUifl, reports as follows : " The ensilage was given to the milch cows mixed with a small portion of chaff. The quantity of milk very much increased, cream thicker, and the butter a rich colour and a fine flavour. I had two beasts feeding upon the ensilage ; commenced giving them 71b. each per day, mixed with 61b. of cut clover hay, each per day, and increased the ensilage to 3^ stones each per day mixed with 61b. of cut clover hay, each per day. By the end of April they were fat without cake or roots. The horses did well upon it, and also the sheep. The crops were considerably better where the ensilage was eaten upon the land by the sheep. 272 Silos for Fodder Crops. SILO AT HEATH FARM, LITTLE LIYERMBRE, SUFFOLK. Feom a report made by Mr. William BiddeU, M.P., upon the erection and working of a sUo, placed by direction of the Hon. J. St. Vincent Saumarez on his estate at Heath Farm, Little Livermere it appears that the structure is one of LasceUes' " portable concrete silos," measuring 24ft. by 18ft., and 12ft. high, made of concrete slabs, 3ft. by 2ft., and l^in. thick, kept in position by timber uprights, 4fin. by Sin. The floor is of similar slabs, and the roof of corrugated iron ; the cost, including 9Z. for carriage, was a trifle under 501. From June 25 to June 30 it was filled with green sainfoin, three-fourths being cut into chaff and the remainder unchopped ; some of it being well trod in the same day as cut, the other the day after. The ensilage was covered with boards, weighted with bricks, amounting to 1201b. pressure to the square foot. Subsequently, the sides bulged, and had to be strengthened by props. On Oct. 18 the silo was opened, and some of the ensilage was offered to horses and cattle, which readily ate it ; pigs did not care about it. The sides and top were decayed and mouldy to the depth of 6in. to 9in. The ensilage, originally 12ft. deep, had sunk down to 74ft., and weighed 351b. to the foot ; 60J tons being the calculated weight of ensilage arising from what was estimated to weigh 21 tons if converted into hay. The portions from the chaffed sainfoin and that from the unchopped portion were equally well preserved, emitting a sweet, and, to some extent, spirituous odour. On Dec. 18 the sUo was again examined (there was stfll heat in it), when the face of the cut made for testing it on Oct. 18 was in a most unsatisfactory state, as mould and decay had penetrated a foot into it, rendering a considerable portion useless except for manure. From the fact of the cut being so decayed, Mr. BiddeU is of opinion that the less exposure after cutting is begun the better, hence a long sflo would be preferable, though a square one is less costly, proportionate to its capacity. Where easily drained, he thinks the sUo had better be half underground, the 6ft. of earth from below supporting the sides above; thus arranged, probably 9in. brickwork, with griers every 6ft., would be sufficiently strong. It woiUd be easily fiUed, and less affected by changes of temperature. On the cost of this sUo there should be a gross return of 6 per cent., or SI. per annum, as rent, which, calculated up in its 50 tons capacity, gives Uid. per ton. As to comparative cost, he thinks that the saving of sUoing has been greatly over-estimated. In haying, the cost of cutting (in the eastern counties) is 4s. ; making, 7s. ; carting, say, half a mile, and stacking, 8s. ; thatching and straw, 4s. In sUoing the cutting is 4s. ; carting and weighting, say, 4 tons, lis. ; rent of sUo, say, 4s. ; in aU, 19s. per acre, nearly the same as in haymaking. Mr. BiddeU considers the value may be taken as foUows, calculating upon, say, one ton of hay crop per acre : Value, if favourably hayed, 70s. ; less 15 per cent, for depreciation by bad weather, 10s. 6d. ; net value of Essex Silos. 273 hay, 59s. 6d. The value if siloed, being 10 per cent, more than if well hayed, is 77s., the difference thus working out to the result that, in siloing, a crop may be secured of more value by 2S per cent, than if hayed in average seasons. Pursuing these calculations on a farm of, say, 300 acres, where 33 tons of hay or stover are generally made, and that is worth 3Z. 6s. 8(i. a ton to the farmer, there is an increased value amounting to him of 25 per cent. On lOOZ. it amounts to 25i., that is, if his landlord wiU build him silos which will hold 100 tons of ensilage, which, it must be borne in mind, is not a saleable commodity like hay. This scheme, Mr. Biddell adds, looks remarkably weU on paper, but should not advise any tenant farmer going too far with it, though we have most abundant evidence to justify small experiments. MR. B. GIBSON'S SILOS, SAPFRON WAIDBN, ESSEX. A COVEEED yard, in itself one of the best agricultural economies of recent adoption, is, in the instance to which we are about to refer (as an example of a still more recently advocated economy) inclosed on two adjoining sides by a cow byre ; and immediately adjoining this, along one side of the square which we are describing, there are a succession of five cubic tanks, made of concrete, each of them 12ft. by 14ft., and 12ft. deep. They cost ISOZ. altogether. The concrete, some 6in. thick, provides a ceiling as well as walls and floor, and there is a manhole in the centre over each. These tanks are so many silos. A crop of rye, just coming into ear in June, about 80 tons in all, was cut into chaff (about fin. stuff) in the field, bagged and brought to these tanks, there filled in as rapidly as possible, and trampled down by man and boy as the work was going on. The whole took seven days to do, and the manholes were well covered up with puddled clay, after as much as possible had been crammed into the sUos. When we visited the farm last Tuesday (Nov. 14, 1882), one of the silos had been emptied. Twenty-four cows had been having a bushel a day apiece of the ensilage, along with a couple of cartloads of white turnips, spread on the pasture where they were daily turned, and a truss of hay to every four in the covered yard where they lay at night. The cows looked well, and were doing well, yielding various quantities of milk, from fifty- two pints a day (P) just newly-calved, to little more than a gallon as they were drying off, after being nine months at the paU. The second silo — there is a doorway in the separating wall of concrete — was then being used, each being gradually emptied over its whole surface from the top downward. The day's portion had been taken out, and was lying on the fioor of silo No. 1, as we could see by the light through its manhole, which had been opened. It looked like chop of rather heated hay : it handled as straw- chaff which had been damped, and got nearly dry again, might handle : it 274i Silos for Fodder Qrops. smelt most disagreeably of the slight fermentation it had undergone ; and it tasted — well ! — the cattle had just had their feed, but they were stiU standing before their well-cleaned troughs, and a step of the stufE being placed before them they readily, after an experimental sniff, and greedily attacked it. The whole contents of the tank, except about Gin. of the top layer, when first opened is good fodder. That and some 2in. or Sin. round the waU was mouldy : the rest was wholesome, palatable fodder. There was no heat in the mass, though any quantity of it loosely thrown together heated readily enough. Dr. Voelcker's analysis of the ensilage in this case shows that there is rather more than 72 per cent, of water still present in the stuff, and only 2'13 per cent, of ash ; thus indicating that no great loss had taken place since the month of June, when the pits were filled. The presence of 8 per cent. (? 0'8) of lactic acid was, we presume, the most noteworthy illustra- tion of the change of composition that had been experienced. There was 2 per cent, of albuminous compounds containing 0'3 of nitrogen, and there was 12-8 per cent, of mucilage and digestible fibre, and 9'7 per cent, of woody fibre. — Agricultural Gazette. Mr. E. Gibson writes, Oct. 15, 1883 : — " I opened one section of my largest silo last week in the presence of Mr. H. M. Jenkins, secretary to the R.A.S. It contained chaffed clover, and, with the exception of about 2in. on the surface and somewhat more immediately round the sides, for a short distance downwards, it proved to be perfectly preserved. I only find it necessary to use sufficient weight upon the surface of the battens which cover the ensilage to insure close contact with the fodder, as it is cut with chaff and well trodden at the time of filling. About fifty head of cattle, chiefly milch cows, are now eating the ensilage. It is, I consider, much better to cut the green food into chaff at the time of filling, as less fermentation takes place than when put in whole. I have used 15 acres of rye for ensilage this summer in addition to 35 acres of clover, sainfoin, and grass, making in all about 400 tons. Of course, the clover, &c., is much superior to the rye; we mix them together." — Farmers' Almanac. MR. BATEMAN'S SILOS, BRIGHTLINGSEA, ESSEX. At the Lodge Farm, Brightlingsea, three silos (or, rather, one sUo in three divisions) were constructed last year for Mr. John Bateman, the builder being Mr. E. Olark, of Great Bentley ; and on the 30th of January, 1884, at Mr. Bateman's invitation, a large number of persons assembled to witness the opening. The silo is solidly built of concrete, and separated by concrete walls into three distinct compartments. The total length is 47ft., the width 17ft., and the depth 134ft., the length being divided by two transverse internal walls. The general structure is, Essex Silos. 275 very similar to that silo represented under the title of "The Kentish Silo," in a previous chapter. The cost of the silo was 160?. ; and this might have been reduced somewhat had it been built origiually without the divisions, which, we understand, Mr. Bateman intends to have removed. The first compartment — ^that farthest from the entrance — was filled on June 18 with red clover, partly in chafE, partly unchopped, the latter forming the upper layer. The clover was very wet when pitted, and it was weighted by means of a stack of hay, built on the top of two or three layers of bricks, placed in the usual manner on transverse boards, the pressure being estimated about 1001b. per square foot. The clover, although cut when the intermixed grass was rather woody, was a very fair sample of ensilage. The second division, or sUo was filled with coarse, marsh grass, which was pitted partly very wet and partly dry. This was salted, but the addition is regarded by Mr. Bateman as quite unnecessary, and conse- quently useless. The silo was filled on July 6, and the contents were pressed with 1301b. per square foot. The resulting ensilage was a most admirable sample— very sweet and fragrant. The third division was filled with chopped maize, which was cut and pitted on Sept. 6. A biting gale on Sept. 1 had stopped the growth and withered the tops, and when about 701b. pressure was put on the chopped maize, floods of juice exuded from the sUo ; and when the silo was opened the ensilage had passed into the acetous stage, evidently from iusufficient expulsion of the air. This maize ensilage was not used for the horned cattle, but kept exclusively for the breeding ewes on the farm. The stock generally have been for some time fed on ensilage from other silos, which they eat greedily, and it is found that the cows so fed yield a larger quantity and better quality of milk. The butter from the farm was on view and was rapidly bought up by the visitors at Is. Id. per pound ; it was excellent both in colour and flavour. Mr. Bateman is so satisfied with the result on the Lodge Farm that he intends building larger silos on two other farms. The experience gained during the past season wiU lead to improvements in the future arrange- ments ; it is proposed to substitute for the heavy sliding iron roofs, which are now used, lighter and consequently less expensive constructions covered with WiUesden paper ; and in place of the concrete barrels now employed to produce the requisite pressure, it is contemplated to utilise Potter's hydraulic jacks and channel standards built into the inner waUa of the silos . The attendance, despite the exceedingly unfavourable weather, was large, and the general impression produced was one strongly in favour of the system. The coarse grasses which are produced by the low-lying, salt marshy land of the district, were admirably preserved, and afforded a good sample o£ the value of the process of ensilage. 276 Silos for Fodder Crops. ENSILAGE AT THE ST. ALBAPT'S DAIRY FARM. (rrom the Live Stock Journal.) In the year 1882 I erected two pits for storing grains, and filled them last year with 100 tons of grains, which came out first rate ; this year, wishing to be in the fashion, I re -named the said grain pits, and they are now called sUos. The two sUos are made of bricks, cemented inside, and roofed with galvanised iron, and they cost a few shillings under 50Z. I inclose a £.oi}f C(yveyid vjith Comtgated Iron. \ :, :, 1 :. :. :. :. :. . A \ ^ 71 "" ^ 1 / ^ ^ s = "n T—, Tm ^ ^ ^ ^ -^ [/ 1 1 -- ^ ^ ^ ^ \ J=l GKOrND PLAN. plan and section, which will give the size, &c. They drain into a small cesspit outside. One silo would therefore cost 25Z., and this amount, to be repaid within twenty-five years by equal annual payments of principal and interest at 5 per cent., would incur an annual payment of \l. 16s. Si. St. Allan's Dairy Farm. 277 Three years ago I laid down 30 acres of arable land with grass seeds. The crop this year was very poor, not more than one load to the acre, and almost entirely bents, there being very little undergrass. I decided to fill one of the silos with this grass, and accordingly commenced cutting on the 14th June with two mowing machines, and on the 15th the grass was carted and cut into chafE by a steam engine. The work was commenced at 9.30 a.m., but in consequence of a severe storm, the machine was stopped at 11.30 a.m., the sUo being not quite half f uU ; the 16th was wet aU day, and therefore the machiue was not started; the 17th was Sunday; and on the Monday, the 18th, the machine commenced at 9.30 a.m., and the sUo was completely filled by 2 p.m. Twenty-three men were engaged, both on the 15th and 18th, as follows : — 1 men treading silo ; 7 filling sacks and carrying to pit (about 10 yards) ; 1 unloading the cart ; 2 feeding chafE machine ; 1 engine driver; 1 waterman; 7 loading carts and dragging. The men were engaged for three hours on the 15th and four and a half hours on the 18th at id. per hour. Three horses and carts were employed. It took 64 acres of the grass to fill the silo, and the grass weighed 15 tons 5 cwt., 21b. of salt being added to each cwt. of grass. Cost of Fillino and WEioHTrNa the Silo. June 14, 1883. £ s. 3,. Mowing 6i acres of grass with machine, including beer for men, but exclusive of horaea, Is. 8ci. per acre 10 10 Baking three rowa into one, putting into small cooks for carting, and breaking salt, including beer for men, 2s. Sij0ottng, Wtmifi, '€xuM, gactting, ^c„ USEFUL FOR COUNTRY GENTLEMEN, TRAVELLERS, ETC., PUBLISHED BY HORACE COX, "THE FIELD" OFFICE, 346, STRAND, LONDON, W.C. %* Orders for any of the following works, with postage stamps or post-office order {payable at the Somerset House Branch Money Order Office) for the amount, should be sent to HORACE Cox, Publisher, at the above address, or they may be obtained by order of any bookseller. PREFACE. o5 VI ^wmw€^ PEN AND PENCIL. FRANCIS FRANCIS and A. W. COOPER. CONTENTS. The First of September. A Day in a Punt. Mark Cock ! Treating. Long Tails and Short Ones. Paying the Pike. Rabbit Shooting, Roaching. Grouse Shooting. Salmon Fishing. Snipe Shooting. Grayling Fishing. "THE field" office, 346, STRAND, W.C. A CATALOGUE OF BOOKS A PRESENTATION VOLUME FOR CLUBS. 4fo., bevelled boards, gilt edges (500 pages), with appropriate illustrations, price One Guinea, by post £1 2s. J\d. THE English Game of Cricket : COMPRISING A DIGEST OF ITS ORIGIN, CHARACTER, HISTORY, AND PROGRESS, TOGETHER WITH AN EXPOSITION OF ITS LAWS AND LANGUAGE. BY CHARLES BOX, Author of " The Cricketers' Manual," " Reminiscences of Celebrated Players," Essays on the Game, " Songs and Poems," "Theory and Practice of Cricket," &c. CONTENTS. Chap. TO > Introductoiy. \ V1.3 CLANCES AT THE PAST AND PRESENT STATE OF COUNTY CRICKET. VII.— Middlesex. VIII.— Public School Matches. IX.— Kent. X. — Hampshire. XI. — Surrey. XII. — Sussex. XIII. — Nottinghamshire. XIV.— Yorkshire. • Intercolonial Matches. Chap. XV. — Warwickshire and Derbyshire. XVI. — Gloucestershire. XVII. — Lancashire and Leicestershire. XVIII.— The Eastern Counties. XIX. ■) XX.) XXI.— School and Village Matches. XXII. — Curiosities of Cricket. XXIII.— Cricket Grounds. XXIV. — Laws of the Game. XXV.^ — Poems, Songs, and Ballads. XXVI. — Glossary of Words and Phrases. Postscript. — Shakespeare and Cricket — An Enforced Dissertation. OPINIONS OF THE PRESS. " The most complete and interesting work on cricket ever published. No expense has been spared in making that which is really useful a very handsome volume." — Bell's Life. " We welcome with heartiness a writer like Mr. Charles Box, who has so pleasantly united in the splendid volume before us the old order (of cricket) with the new." — Sporting and Dramatic News. " This work will prove interesting to all lovers of cricket." — Times. 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The author, himself a well-known amateur, is fully competent to speak with authority on the game, having had the opportunity of studying the play of the best Continental, in addition to that of the best English, masters, and,, therefore, may be taken as a safe guide by learners. I. — ^Tennis Abroad. II. — Tennis in England. III. — The Court and. Imple- ments. CONTENTS. IV.— The Laws History. V. — The Game. VI. — Appendix. and their Second Edition. Large post 8vo., price 5*., hy post 55. 2^. .A. n^ O- Xj I IST C3-- FRANCIS FRANCIS. Author of "A Book on Angling," "By Lake and River," "Hot Pot," &c. Preface. Chap. I.— The Art of Angling. II.— Mid-Water Fishing. III.— Surface or Fly Fishing. IV.— The Gudgeon, the Pope or Ruff, the Bleak, the Roach, the Rudd, the Dace, the Chub, the Barbel, the Bream, the Carp, the Tench, the Perch. Chap, v.— The Pike. VI. — Trout Fishing with Bait. VII.— Fly Fishing for Trout. VIII.— Trout Flies. IX. — Grayling Fishing. X. — Salmon Fishing. XI.— Salmon Flies. XII.— On Tackle Making. Addenda. Post 8vo., in cloth, price ^s., by post 5Jr. \d. HOT-POT. MISCELLANEOUS PAPERS BY FRANCIS FRANCIS, Author of "A Book on Angling!' "By Lake and Ri'ver," " Anghng," &c. "THE FIELD" OFFICE, 346, STRAND, W.C. A CATALOGUE OF BOOKS Demy 8vo., with folding plates and full-page illustrations printed on toned paper, price 2\s., by post 2\s. gd. MODERN WILDFOAA^LING. BY LEWIS CLEMENT, " WiLDFOWLER." Punting. — Introduction. Chap. III.) Muzzle-loading Punt Guns (Flint, Percussion and Copper Tube Ignition. CONTENTS. Chap. XXVII XXVIII XXIX, III IV. V. [ Breechloading Punt Guns. VI.) VII.— VIII.- X. XI.— Loading Punt Guns. Aiming and Firing Punt Guns. The Setting of Punt Guns. Recoil and After-recoil Appa- ratuses. XII. XIII. XIV. XV. XVI. XVII. XVIII.— XIX.- XX. XXI. XXII. XXIII. XXIV.- Punts. XXV. XXVI :] Launching Punts and Canoes. Punting Accessories. Punting. ■My First Single-handed Punting Trip. Amateoir and Professional Punts- XXX XXXI XXXII XXXIII, XXXIV, XXXV XXXVI.- XXXVII ;l Shoulder Guns. •Flapper Shooting. . — Inland Duck Shooting. . — Sailing to Fowl. > Decoying to the Gun. , — Decoying in America. . — American Blinds. •American Canvas - back Shooting. XXXVIII.— Shore Shooting. XXXIX.— Flighting. XL. ■) Curious Wildfowl and Sea- XLI. 5 fowl Shooting Expedients. XLII.— Close Time and Wildfowl and Sea-fowl Acts. XLIII.— " Wildfowler's " Table of Loads. XLIV. — Netting Plovers and Snipe Snaring. XLV. — Snaring and Hooking Sea- fowl on the Continent. XLVI. — Decoying into the "Pipes." XLVII.— Flight Ponds and Rock Fowling. XLVIII. — Concluding Remarks. OPINIONS OF THE PRESS. . "An excellent work indeed, and full of capital illustrations, is 'Modern Wildfowline;' to recommend It anght I should have, if I were clever enough, and it did not already exist, to invent the famous phrase, a book no gentleman s horary should be without. — Truths March 17, 1881. , ," This book deals not only with the various modes of approaching, or decoying, and killine wildfowl of all kinds, but enters into minute details upon the construction of punts, both single and double handed-, sails; punt pns, muzzle-loading as well as breechloading; recoil apparatus; and shoulder guns of all patterns, with the varying loads required for different bores. 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Large post Svo., price 6s. 6d., by post 6s. lod. OF LIFE, SCENERY, and SPORT IN NORV/AY. Rev. M. R. BARNARD, B.A., Author of "Sport in Norway and Where to. Find It," " Life of Thorvaldsen," and Translator of " Private Life of the Old Northmen," and a " Summer in Iceland," &c. 'THE FIELD" OFFICE, 346, STRAND, W.C. '^JV A CATALOGUE OF BOOKS Just Published, &V0. pp. 463, with 32 illtistratiofis, price i6s,, by post 16s. lod. ESSAYS ON SPORT AND NATURAL HISTORY. By J. E. HARTING. CONTENTS : Shooting — Hawking — Fishing — Training Hawks — Lark Mirrors — Plover Catching — Fishing with Cormorants — Decoys — The Irish Wolf- hound—The Badger— Wild Turkeys— The Great Bustard— Seals— Wild Swans, &c. Thirty-eight Essays : concluding with Practical Hints on Bird Preserving for the use of Travellers and Collectors. Large post Svo,, price 6s., by post 6s. ^d. RAMBLES AFTER SPORT; OR, TRAVELS AND ADVENTURES IN THE AMERICAS AND AT HOME. BY CONTENTS. A Week's Duck Shooting at Poole — That Sheldrake— Quail Shooting^in California — Bear Huntinir in Mexico— Bear Shooting in California— My First Elk— My L^t Bear— Round Cape Horn, Valparaiso, Santiago— Andacollo, Lima, Panama, Jamaica— Country Sports and Life in Chile — Shooting in Chile — Two Days' Fishing in Chile— "^Toling " for Ducks in California— Up the Sacramento— The White Elk of Astoria — Sport in the Coast Range Mountains. In large post 800., limp cloth, price 2.S. 6d., by post 2S. 8d. COLORADO: ITS AGEICULTUEE, STOCEJEEDING, SCENERY. AND . SHOOTING. BY S. NUGENT TOWNSHEND, J.P. ("ST. KAMES.") In One Map, bound in red cloth, mounted on canvas, size 2^in. by 2^in., price 4s. 6d., by post 4s. 8d. THE "FIELD" HUNTING MAP (PRINTED IN COLOURS), GIVING THE NAMES AND DISTRICTS OP EACH PACE OP HOUNDS PROM CARLISLE TO LAND'S END. "THE FIELD" OFFICE, 346, STRAND, W.C. o PUBLISHED BY HORACE COX. Now ready VOLUMES I. and II. (containing Paris I. to VI. J, in crown 8vo., red cloth, price 6s., by post 6s. 6d. THE HUNTING COUNTRIES or ENGLAND, THEIR PAGILITIEg, GHARAGTER, AND REQUIREMENTS. A GUIDE TO HUNTING MEN. By "BROOKSBY." COnSTTZBIsTTS. Introduction. The Belvoir. The South Wold. The North Warwickshire. The Pytchley. The Woodland Pytchley. The Atherstone. The Billesdon or South Quorn. The MeynelL [Hunt. The Bicester and Warden Hill The Dulverton. The Stars of the West. Mr. Luttrell's. Lord Portsmouth's. The Essex and the Essex Union. The Hertfordshire. The Whaddon Chase. PART I. The Brockleshy. The Burton and The Blankney. The Fitzwilliam. The Quorn. PAKT II. The Heythrop. The Old Berkshire. The South Oxfordshire. The South Nottinghamshire. The East Kent. The Tickham. The Vine. PART in. The Vale of White Horse. The Cheshire and South Che- shire. The Blackmoor Vale. The Cambridgeshire. The Duke of Grafton's. The Holderness. The Cottesmore. The Puckeridge. The Old Berkeley. The South Berkshire. Mr. Garth's. The H. H. The Tedworth. Lord Ferrers'. The Warwickshire. The Oakley. The North Herefordshire. The Duke of Buccleuch's. The Tynedale. Lord Percy's. The Morpeth, The Rufford. Also now ready (VOLUME II.). The Badsworth. The Southdown. The East Essex. The Bramham Moor. The East Sussex. The Essex and Suffolk. The York and Ainsty. The Old Surrey. Mr. Richard Combe's. The Burstow. The Hurworth, The Cattistock. The Suffolk. The Shropshire. Lord Middleton's. The Sinnington, The Wheatland. The United Pack. The CJiiddiqgfdld. PART IV. Lord Fitzwilliam'S. The Crawley and Horsham. The West Kent. Sir Watkin Wynn s. The Hursley. The Hambledon. Lord Coventry's. PART V. The Earl of Radnor's. Capt. Hon. F. Johnstone s. The South Durham. The Worcestershire. The Ledbury. The South Herefordshire. The South Staffordshire. PART VI. Lord Fitzhardinge's. Hon. Mark RoUe's. South-and-West Wilts. Lord Portman's. The Cleveland. The Grove. The West Norfolk. The Bedale. Lord Zetland's. 'The Craven. The Surrey Union. The North StaSordshire. The Duke of Beaufort's. The Cotswold. The Dumfriesshire. The Albrighton. The North Cotswold. The North Durham. Braes of Derwent. The Radnorshire and Hereford. The Monmouthsliire. West Each part is published separately, price 2s. 6d. ?THE field" office, 346, STRAND,. W.C. A CATALOGUE OF BOOKS Now ready, royal &io, price los. 6d., by post lis. HOESE BREEDING RECOLLECTIONS. BY COUNT G. LEHNDORFF, Containing Notes on the Breeding of Tlioroughbreds — In-breeding and Out-crossing — Pedigrees of all the Principal Sires — and Genealogical Tables of Celebrated Thoroughbreds. Post 8vo., price js. 6d., by post 8x. J10SS torn a E0Umfl %imt : OR, MOORISH WANDERINGS AND RAMBLING REMINISCENCES. BY CHARLES A. PAYTON, " Sarcelle" of "The Field," Author of "The Diamond Diggings of South Africa." &c. Price Si. cloth, by post S*. A^- A Year of Lilberty ; or, Salmon Angling in Ireland. BY Large post i/vo., price Ss. 6d., by post gs. By Lake and River « AN ANGLER'S RAMBLES IN THE NORTH OF ENGLAND AND SCOTLAND. BY B^ 12/ jIL 2Sr O I S IFIS/JLITOIS. Author of " A Book on Angling" 6fc. "THE field" office, 346, STRAND, W.C. ^ PUBLISHED BY HORACE COX. Third Edition. , Large post ivo., price ys. 6d. cloth, by post ys. lod. FACTS AND USEFUL HINTS RELATING TO FISHING AND SHOOTING TO WHICH IS ADDED A List of Recipes for the Management and Cure of Dogs IN Disease. Edited by I. E. B. C, Editor o£ "The Gamekeeper's and Game Preserver's Account Book and Diary," &c. FISHING. Baits— Fish— Fish Hatching— Flies and Fly Making— Flights— Floats— Gut— Lines Miscellaneous— Nets— Ponds and Streams — Pcds — Wading Boots — Wax. SHOOTING. Birds and Beasts— Breeding— Coverts— Deer— Dogs— Ferrets — Foxes— Guns- Kennel— Miscellaneous— Nets— Preserving— Rabbits— Rifles— Traps — Vermin. Appendix. — Diseases of Dogs. In post 8vo., with Illustrations, price 3s. 6d. The Ppaotioal Management of Plsherieg. A BOOK FOR PROPRIETORS AND KEEPERS. By FRANCIS FRANCIS. Author of "Fish Culture," "A Book on Angling," "Reports on Salmon Ladders," &c. COIsTTElNrTS. Chap. . „. , „ 1 L— Fish and Fish Food. II.— How to Grow Fish Food and how to Make Fishes' Homes. III. — On the Management of Weeds and the Economy of Fishing. IV.— The Enemies of Trout and how to Circumvent them, v.— The Artificial Incubation of Ova. VL— On the Rearing of Fry and the Conduct of Ponds, Stews, &c. VII.— Some Hatcheries. VIII.— Coarse Fish. IX.— On Salmon and Trout Ladders and Passes. Appendix. — Notes, &c. "THE FIELD" OFFICE, 346, STRAND, W.C. A CATALOGUE OF BOOKS Now ready, quarto, price ^s., by post 5s. 6d. THE GAMEKEEPER'S AND GAME PRESERVER'S att0unt 3S00ft antr JStarg. By I. E. B. C, Editor d£ " Facts and Useful Hints relating to Fishing and ShooUng," " The Ar^ler*s Diary," &c. Its Sections comprise— The Shooting and Its Guardians. Memorandum of Agreement. Receipts and Payments. Vermin Diary — General Summary. Poultry Diary — Receipts and Payments. General Balance Sheet. Pheasant Diary — Receipts and Expenses. General Balance Sheet. Dog Diary — Kennel Names, Ages, Value, &c. Kennel Occupants at the beginning of each Quarter of the Year, Produce Register— Bitches. Stud Register. Pedi^ees. Receipts and Expenses. General Balance Sheet. Game Diary — Total Summary of the Season. Produce of the Beats or Coverts. Tenants, &c., to whom game should be given. Inventory of Appliances, &c. Stock Valuation. General Balance Sheet for the Year. In handy pocket sisse, price is, 6d.j by post is, 'jd, THE Gamekeeper's Shooting Memorandum Book FOR THE Registering of Game Shot, Memoranda of Sale, &c. By I. E. B. C, Editor of "Facts and Useful Hints relating to Fishing and Shooting," "The Gamekeeper's and Game Preserver's Account Book and Diary. &c. Crown 8vo., price is. 6d., by post 2s. gd. PUBLIC SHOOTING QUARTERS IN ENGLAND, WALES, SCOTLAND, IRELAND, AND ON THE CONTINENT. B -g- " "W I li !D IF O "W Ij E la." Author of " Shooting and Fishing Trips," " Modem Wildfowling," "Table of Loads," &c. "THE FIELD" OFFICE, 346, STRAND, W.C. .17^^^-- ■ fe^^" , PUBLISHED BY HORACE COX. 21 '^ Third Edition, Enlarged and Revised. Large post 8vo., with Illustrations, price 5i. cloth, by post ^s. 4^. THE COUNTRY HOUSE: A Collection of Useful Information and Recipes, Adapted to the Country Gentleman and his household, and of the greatest utility to the housekeeper generally. By I. E. B. C, Editor of " Facts and Useful Hints relating to Fishing and Shooting," and " The Gamekeeper's and Game Preserver's Account Book and Diary." Published Annually. In post ^0., price is. 6d., by post is. Sd. THE ANGLER^S DIARY and TOURIST FISHERMAN'S GAZETTEER contains A Record of the Rivers and Lakes of the World, to which are added a List of Rivers of Great Britain, with their nearest Railway Stations. Also Forms for Registering the Fish taken during the year ; as well as the Time of the Close Seasons and Angling Licences. By I. E. B. C, Editor of " The Gamekeeper's and Game Preserver's Account Book and Diary," &c. Fourth EditK)N. Infcap. 8vo., price is., by post is. id. GROUND GAME ACT, 1880, WITH EXPLANATORY NOTES, Indicating the various periods at which the law comes into force under different conditions, its effect on existing contracts between owners and occupiers of land, and the lessees of sporting rights, the limitations placed upon the killing and selling of ground game, and other matters included in the Act. ' " Will be a great convenience to magistrates, and to all persons affected by the Act." — Saturday Keview. Third Edition. Infcap. Svo., price is., by post is. id. WILD BIRDS' PROTECTION ACT, 1880, WITH COMMENTS ON THE RESPECTIVE SECTIONS Explanatory of their bearing as regards owners and occupiers of land, sportsmen, bird p catchers, bird dealers, &c. ; together with Notes on the Birds named in the Schedule, their provincial names, &c. " An accurate exposition of and commentary on the recent measure, and will dispel many misconceptions of its scope." — Quarterly Review. " A capital annotated edition of the Act." — Saturday Review. "THE field" office, 346, STRAND, W.C. A CATALOGUE OF BOOKS Second Edition. In demy 8vo., price los. 6d., by post lis. Estate Management: ^ Practical l^anUfiooft for ILanUlortis, Stctoar&g, antr ^Pupils, WITH A LEGAL SUPPLEMENT BY A BARRISTER, ALSO Tenant Right from a Landlord's Point of View. BY CHARLES E. CURTIS. Extract from Preface. — " He who intends to qualify himself for such interesting and responsible work as the care and oversight of landed property must, in these days of keen competition, give up the idea that he need only abandon himself to the pleasures of a country life, and that all needful information will be picked up by the wa^." * COIfJ"TEIsra?S. Chap, I. — Letting and Leases, n. — Farm Valuations. III. — Forestry. IV. — Underwood. V, — Fences. VI. — Grasses suitable for Woods and Plantations. VII.— The Home Farm. Chap. jjr' t Repairs and Materials. X.— The Blights of Wheat and other Cereals. XI. — Accounts. XII. — Useful Rules of Arithmetic and Mensuration. In crown &vo., price is. CATECHISM OF ESTATE MAMGEMENT. SECTION L LETTING AND LEASES. By CHAS. E. CURTIS, F.S.I., -Wanagement at the Colli Management, Author ( Professor oE Estate Management at the College of Agriculture, Principal of the School of EsUte r of" Estate Management, &c. Price 6d.j by post 'jd, ; or 2s. 6d. the half-dosen. "THE FIELD" DUPLICATE JUDGING BOOK Facilitates the work of the Judges at Poultry and other Shows, by a very simple method of entering and preserving a duplicate judging list. "THE FIELD" OFFICE, 346, STRAND, W.C. PUBLISHED BY HORACE COX. NEAAT EDITION, ENLARGED. " Jud published, 400 pp., demy %vo.. Illustrated, price ds., by post ds. 6d. SILOS FOR PEESEEVING BEITISH FODDEE CE0P8 STOEED IN A GEEEN STATE. NOTES ON THE ENSILAGE OF GRASSES, CLOVERS, VETCHES, &C. Compiled from Various Sources BY THE STJB-BDITOB OF "THE FIELD." CONTENTS. Introductory — Summary of Practice — Crops for the Silos — Filling the Silo — Covering up and Closing the Silo — Weighting the Silo — Opening the Silo — Effect of Ensilage on Fodders — Feeding Qualities of Silage, &c. The Chemistry of Ensilage. By F. Woodland Toms, F.I.C., F.C.S. Appendix. Now ready, price 6d. Harvesting Crops Independently of Weather: PRACTICAL NOTES on the WEILSON SYSTEM of HARVESTIITG. By "AGRICOLA," And other Contributors to "The Field." COlTTBlirTS: Losses from Wet Seasons— How to Build Stacks on the Neilson System— The Underground Air-passages— The Exhaust Fan— Regulating Rick Temperature— Treatment of Hay Crops before Stacking— Expe- riences of Mr. Neilson's Disciples— Grain and Seed Crops— The Cost of adopting the Neilson Process- Quality of Hay and Corn Crops cured by this System— Mr. Neilson's Early Experiments— Previous Inventions for Drying Crops — Concluding Remarks. "THE FIELD" OFFICE, 346, STRAND, W.C. A CATALOGUE OF BOOKS Illustrated ■with numerous Woodcuts, post Sivo., price ^s., by post ^s. ^d, THE INTERNAL PARASITES OF OUR DOMESTICATED ANIMALS; A MANUAL OF THE ENTOZOA OF THE OX, SHEEP, DOG, HORSE, PIG, AND CAT. By T. SPBITCEB, COBBOLD, M.D., F.R.S., P.L.S. In crown Sua,, price 2s. 6d., hy post zs. 8d. MANURES : Theip Respeetive Merits fpom an Economical Point of View. By A. W. CREWS, Author of " Guano : its Origin, History, and Virtues," " The Potato and its Cultivation," &c. CONTENTS. PART I. — Definition of the Word " Manure " — Nature's Modes of Applying Fertilisers — History — Classification. PART II. — The Value of Ploughing Down Green Crops — Weeds — Sea-weed — Straw — Sawdust — Tanners' Bark — Wood Ashes — Peat — Rape Cake — Hemp — Poppy, Cotton, and Cocoa-nut Cakes — Bran — Malt Dust — Brewers' Grains — Coal — Soot — Charcoal. PART III. — Dead Animals — Fish — Blood — Animalised Charcoal — Bones — Horn — Woollen Rags, Hairs, Feathers, &c. — Night-soil — Farm-yard Manure — Guano. PART IV. — Salts of Ammonia — Salts of Magnesia — Salts of Potash — Salts of Soda — Common Salt — Lime and its Compounds — " Ooze." In crown 8vo., price 2s., by post 2s. 2d. THE POTATO AND ITS CULTIVATIOlf. By A. W. CREWS, Author of " Guano ; its Origin, History, and Virtues," " IManures : their Respective Merits," &c. CONTENTS. Derivation — History — Constituents — Varieties — Sprouting — Soils — Planting- Manures— Earthing up— Disease— Scab— Storing— Forcing— Producing New Varieties— Substitutes for the " Potato "—Miscellaneous Information. "THE FIELD" OFFICE, 346, STRAND, W.C. \~w^ PUBLISHED BY HORACE COX. Demy 8vo., price 3s. 6d., by post 34. gd.. Illustrated with several Diagrams. THE PRACTICAL SURVEYOR: A TREATISE UPON SURVEYING. SPECIALLY ARRANGED FOR THE GUIDANCE OF PUPILS, STEWARDS, THE SCHOLASTIC PROFESSION, AND INTENDING EMIGRANTS. By THOMAS HOLLOW^AY. C03STTE3SrTS- CHAP. I.— The Man and his Outfit, II.— The Chain — Cautions to Beginners — Best Figure for Chain Surveying. Ill .—Boundaries. IV.— Setting-out Lines by the Eye and passing Obstructions, v.— Division of the Circle and Use of Box Sextant — Chain Angles Condemned — Cross Staff Condemned-vThe Optical Square — Measuring Inaccessible Distances. VI.— The Theodolite— Setting-out Lines with the Theodolite. VII. — Reduction of the Measure of Undulating Ground to Horizontal Measures and Table of Vertical Angles. VIII.— Measuring Lines — The Ofjset Staff and taking Offsets. IX.— To Prove the Correctness of Observations taken with the Sextant — Single Fields Measured with the Chain and Optical Square, so that the Areas can be directly Calculated. X.— To Set-out a Right Angle with the Chain- Figures of the Lines of Measurement best adapted to Irregular Fields. XI.— Equalising Boundaries, and Drawing a Triangle equal to a given Figure. XII.— Computation of Arrears of Irregular Fields. CHAP. XIIL- XIV.- -Example of a Survey of several Fields together, and the Field Book. ■Reference Numbers to Maps — To put Detached Buildings in correct Positions on a Plan by Means of Unmeasured Lines— Lines Measured on the Work^ Making Stations. -Plotting — Selection and Management of Paper — Inking In. -Surveys made for the puri)ose of Dividing Land into Stated Quantities. -Setting-out Allotments and Building Plots. ■Angles and Bearings, and Use and Adjust- ment of Circular Protractor. -Traverse Surveys. -Trespass. ■Quality Lines— Superstructures and Works Underground — Harvest and Coppice Work — Reducing Plans from a Large Plan to a Small One. -To Copy a Map— Colouring, Penmanship, &c. ■Commencement of a Parish Survey— Sur- veying to a Scale of Feet. -Town Surveying. -Testing the Accuracy of a Survey — General Remarks. XXVI.— In Memory of the Past. XV.^ XVI.- XVIL- XVIII.- XIX.- XX. XXI.- XXIL- XXIIL- XXIV. XXV. In crown Svo., with Thirteen full-page Plates, price 2s. 6d., by post 2s. gd. The Swimming Instructor : A TREATISE ON THE ARTS OF SWIMMING AND DIVING. By WILLIAM WILSON, Author of " Swimming, Diving, and How to Save Life," "The Bather's Manual," " Hints on Swimming." "THE field" office, 346, STRAND, W.C. ■ MADE ANTIQUE LACES OP ALL COUNTRIES. By L. W. This work contains the whole of the series of articles on Antique Point Lace which have been published in " The Queen." It will prove an invaluable guide and book of reference to ladies interested in Antique Lace, and, with its highly ornamental embossed cover, will form a handsome ornament for the drawing-room table. ENGLISH TRANSLATIONS OF THE CLASSICS. Post 8vo., 540 pages, price js. 6d, HALF-HOURS WITH GREEK AND LATIN AUTHORS, FROM VARIOUS ENGLISH TRANSLATIONS, WITH BIOGRAPHICAL NOTICES. By C. H. JENNINGS and W. S. JOHNSTONE, Authors of " A Book of Parliamentary Anecdote." In post Svo., price 5^., by post ^s. /^d. THE BABB AND THE BRIDLE : . A HANDBOOK of EQUITATION for LADIES, AND MANUAL OF INSTRUCTION IN THE SCIENCE OF RIDING FROM THE , PREPARATORY SUPPLING EXERCISES ON FOOT TO THE FORM IN WHICH A LADY SHOULD RIDE TO HO,UNDS. BY "VIEILLE MOUSTACHE." Handsomely bound in cloth, price 3s. 6d., by post 3s. gd. ACTING CHARADES FOR OLD AND YOUNG. BY ARTHUR LILLIE, Author of " The Enchanted Toasting Fork," &c. "THE QUEEN" OFFICE, 346, STRAND, W.C. A CATALOGUE OF BOOKS. Published Annually. In demy ^to,, price is., by post is. 3d. THE ILLUSTRATED QUEEN ALMANAC And LADY'S CALENDAR for 1884. Among its contents will be found a Chromo-Lithograph Plate of Designs for Artistic Embroidery, Cross-stitch Work, &c. ; two Coloured Plates of Crochet and Knitting Designs ; numerous Designs for the arrangement of Plants for Decorative Purposes, and also Designs for Pottery Painting, China Painting, Beaten and Cut Brasswork, and numerous Designs for Fancy Ball Costumes, Children's Costumes, &c. ; Recipes for Soups, Sauces, Invalid's Dishes, &c. ; Amusements for Children, and other useful information. "You have not the book of riddles about you have you ? " — Merry Wvues, Price Ss., by post f,s. ^d. "Whetstones for Wits;" or, Double Acrostics. BY Edited by "CRACK." Second Edition. Price 2s. 6d., by post 2s. 8d. OUR COMMON INSECTS: IFII^/ST STEIPS TO ElsTTODyCOLOO-'Y". By Mrs. E. W. COX. Fourth Edition. In demy i^o., on toned paper, and infancy cover, price 2s., by post 2s. 2d, THE BOOK OF DINNER SERVIETTES contains A New Introduction on the Decoration of Dinner Tables, and General Directions for Folding- the Serviettes. There are Twenty-one different kinds given, with Ninety-two Woodcuts illustrative of the various Folds required, and the Serviettes complete. In paper cover, price 6d. By " THE G. C," Author of " Round the Table." "THE QUEEN" OFFICE, 346, STRAND, W.C. ADVEETISEMENTS. Now Ready. Demy Svo. Price Sixpence. SHORT NOTES ON SILO EXPERIMENTS AND PRACTICE. EXTRACTED FROM " SILOS POR PRESERVING BRITISH EODDER CROPS." London: HORACE COX, "Field" Office, 346, Stkand. In a few Days. Demy 8vo. Price 2s. 6d. EABBITS FOE PROFIT AND FOR POWDER. UPON THE NEW INDUSTRY OF HUTCH RABBIT FARMING IN THE OPEN, AND UPON WARRENS SPECIALLY INTENDED FOR SPORTESTG PURPOSES; WITH HINTS AS TO THEIR CONSTRUCTION. COST, AND MAINTENANCE. By R. J. LLOYD-PRICE. London: HORACE COX, "Field" Office, S46, Steand. [2] ADVEETISEMENTS. "WILLESDEK" EOOFING FOE SILOS. "WILLESDEN" Roofing is now much used for SnoEoofa, for wMdi it is especially adapted, being light and durable. "WILLESDEN" Silo Roofs are very easy running for removal wliilst filling, and, though light, are storm proof ; they are also the cheapest, much timber being saved in roof construction. The Roof of Mr. Kains-Jackson's Model Silo, WHICH WILL BE OPENED DtTEING filCDLTURAL SOCIETY'S SHOW AT SHREWSBURY. IS MADE OP "WILLESDEN" ROOFING. See Remarks in "■ Field " Newspaper, 7th June, pp. 805, 806. " WILLESDEN " Roofing, as supplied for Silos on the Haigh, Brightlingsea, and other estates. " WILLESDEN " Roofing for Farm Buildings, Hay Barns, Silos, Gamekeeper's Huts, Poultry Houses, &c. " WILLESDEN " Rot-Proof Canvas for Tents, van covers, Bliuds, Loin Cloths, &c. " WILLESDEN " Rot-Proof Scrim for shading Greenhouses, Ferneries, and protecting tender Plants, &c. Silver Medals— PARIS, 1878. FISHERIES, 1883. OAICUTTA, 1883-84. Bronze Medals— PARIS, 1878. TRURO, 1880. CAMBORNE. 1882. LONDON OFFICE, 34, CANNON ST., E.C. ADVERTISEMENTS. F. W. REYNOLDS & CO., Wholesale and Export Iron and Hardware Merchants, 73, SOUTHWAEK STREET, LONDON, S.E. Galvanised Corrugated Roofing Sheets, REYNOLDS' BEST ® QUALITY. In Sheets 6, 7, or 8 ft. long x 2ft. wide when corrugated, Sin. oorrngationa. Gauge. Feet. ^P^^f^^^™^''*^ 16.— Per ton of about 60 6 x 2 Sheets ... Sowts. Oqrs. 18.— 20.— 22.— 24.— 75 6 X 2 90 6 X 2 112 6 X 2 135 6 X 2 2 .. 1 .. 1 .. 1 1 3 „ 2 „ 1 „ The "SUNFLOWER" Slow- « ,. combustion Parson's Grate, -„ ,, ^. «. 4^i„4.-__ AsphalteEoofingFelt, ^^^ ^^^^^^^ ^.^^ ^^.^^^^ ^J Wall Ties, Ventilators Boofing Ironwork, Lift-out Bars complete. Hot-Water Pipes, Cisterns and Tanks, Size is by se in. high. Fire ISin. wide. Fittings and BoUers, Tiled and other Pumps, Gas and Water Tubes and Fittings, £ain-water Goods, Bar and Sheet Iron, Joists, ITails and Screws, Locks, Bolts, Hinges Brassfonndry, Oils and Colonrs, Paint, &c.. Brushes, Tools, Glass, Hair, Cement, Spades and Shovels, Barrows, Buckets, F gister Stoves, Kitcheners, Baths, Portable Coppers, Chaff-cutters, C alvanised Netting, Iron Fencing ,nd Fencing Wire, b ble & Harness-room Fittings, C vhonse and Piggery Fittings, ■I i every description of Farm and E ;ate Eequirements. For full particulars and prices, vide F. W. BETN0LD8 1<^0.'8ARCHITM1T8' ILLUSTRATED OATALOGVE OF BUILDERS' HARDWARE {lOipages, bound in cloth). A copy will be sent post free on application. ADVEETISEMENTS. GEORGE CORDING, WATEEPEOOPER. VENTILATED RIDING COAT. VENTILATED WALKING COAT. DRIVING COATS. DRIVING APRONS. REGULATION CLOAKS. GROUND SHEETS. i-i GEO. COEDING, 125, Regent Street. 231, Strand. 62, Piccadilly.