'Ut: ^62 £13 K.35 BOUGHT WITH THE INCOME FROM THE SAGE ENDOWMENT FUND ^^^ THE GIFT OF Hcttrs m. Sage INGRtERING LiBRARY {{Ab.t.i^t... ml 777 Cornell University Library The original of this book is in the Cornell University Library. There are no known copyright restrictions in the United States on the use of the text. http://www.archive.org/details/cu31924004553073 834. MEMOIRS OE THE t^EOLOGICAL SURVEY. ENGLAND AND WALES. T HE GEOLOGY OF THE COUNTEY AEOUND EASTBOURNE. (Explanation of Sheet 334.) BY Clement Eeid, F.L.S., F.G.S. FUBLZSHBD BY OBDEE OF TBE LORDS OOMMISSIONSBS OF HER MAJESTY'S IKBASITSY. LONDON ; PRINTED FOR HER MAJESTY'S STATIONERY OD'FlCE, BY WYMAN ASD SONS, UmnsD, IfjaiEB LAMB, E.C. And to be purchased, either directly or through any Bookseller, from , BYEE AND SPOTTISWOODB, EAST Habdino Street, I%eet Stbhbt, B.a, and 32, Abinqdon Stkeet, Webtmihsteb, S.W. ; or JOHN MENZIBS & Co., 12, HANOTBB STBEBi; EuiNBUEaH, and 90, WEST Nile Steeet, Glasgow ; or HODOES, ITGKJIS, & CO., Limited, 104, Graftoh Steeet, DUBLm. 1898. Price Sixpence. LIST OF MAPS, SECTIONS, AND OTHER PUBLICATIONS OF THE GEOLOGICAL SURVEY OF ENGLAND AND WALES. Thb Maps are those of the Ordnance Survey, geologically coloured by the Geological Survey of the United Kingdom, under the Superintendence of Sir Akoh. OBrsiE, D.G.Ij., LL.D., F.ILS., Director General. (For MapB, details of Sections; and Hemob-s issued by the Geological Survey, . ed. ; 4 (I. of ManX , 3>. 6(Z. ; 6 (Lake District), 12s. 64. ; 6(B. Yorkshfre), 78. 6*. ; 7 (N. Wales), 5s: 6*. ; 8 (Central England), 168. ; 9 (Eastern ' Counties), 128. : 10 (S. Wales and N. Devon), 48. 6d. ; 11 (W. of England and SiB. Wales), 20>. ; 12 (London Basin and Weald), lOs. 6d. ; 18 (Cornwall, Ac), 78. 6d. ; 14 (S. Coast, Torquay to I. of Wight), 9s. j 16 (S. Coast, Havant t« Hastings), 48. 6d. New Series, printed m colown, sheet 1, 2s. ; sheets 2 to 15, 2s. 6(2. each. HOBIZONTAL SECTIONS. 1 to l40, 146 to 148, England, price 68. each. VERTICAL SECTIONS. 1 to 82, England, price 38. td. each. COMPIiETEp COUNTIES OF ENGLAND AND WALES, on a Scale of 1 inch to a mUe. Sheets marked * have Descriptive Memoirs. Sheets or Counties marked t are illustrated by General Ik^emoirs. ANGLESEVt,— 77 N, 78. BBDrOB,D8HIBB,-46 NW, NB,,SWt, SEt, 62 NW, NE, SW, SE. BEEKBHIHB,— 7*, 8t, 12*, 13*, 34* 45 SW*. BRBCKNOCKSHIEEt,— 36, 41, 42, 56 NW, SW, 67 NE, SE. BUCKINGHAMSHIKB,— 7*, 13*, 45* NE, SE, 46 NW, SWt, 62 SW. CABKMABTHBNSHIRBt,— 37, 38, 40, 41, 42 NW, BW, 56 BW, 67 SW, SE. CABRNABVONSHIKEt,— 74 NW, 76, 76, 77 N, 78, 79 NW, SW. CAMBEIDGESHIKEt,— 46 NB, 47*, 61*, 62 SE, 64*. OARDIGANSHIREt,— 40, 41, 56 NW, 57, 68, 69 SE, 60 SW. CHESHIRE,— 73 NB, NW, 79 NE, SB, 80, 81 NW», BW*, 88 SW. CORNWALLt,— 24t, 26t, 26t, 29t, SOt, 31t, 32t, & S3t. CUMBERLAND,— 98 NW, SW*, 99, 101, 102, NE, NW, SW*, 106 SB, BW, NW, 107. DENBIGHt,— 73 NW, 74, 76 NB, 78 NB, SE, 79 NW, SW, SB, 80 SW. DERBYSHIEBt,- -62 NB,-63 NW, 71 NW, SW, SB, 72 NB, 72 SE, 81, 82, 8S SW, SE." DEVONSHIBEt,— 20t, 21t, 22t, 23t, 24t, 26t, 26t, & 27t. DOESBTSHIEE,— 16, 16, 17, 18, 21, 22. DURHAM,— 102 NB, SE, 103, 105 NB, SB, SW, 106 SB. ESSEX,- 1*, 2* 47*, 48*. . FUNTSHIREt,— 74 NE, 79. GLAMORGANSHIEBt,— 20, 36, 37, 41, (Sir 42 SB, SW. GLOUCESTERSHIREt,— 19, 34*, 36, 43, NE, SW, SE, 44*. HAMPSHIEB,— 8t, 9t, 10* lit, 12*, 14, 16, 16. HEREFORDSHIRE,— 42 NB, SE, 43, 65, 66 NE, SE. HERTFORDSHIRE,- It NW, 7* 46, 47*. HUNTINGDON,— 61 NW, 52 NW, NE, SW, 64* 65. KENTt,— It SW & SB, 2t, 3t, 4*, ef. LANCASHTRE,- 79 NE, 80 NW*, NE, 81 NW, 88 NW, BWt, 89, 90. 91 92 SW 98. LEICESTERSHIRE,— 53 NE, 62 NE, 63* 64*, 70*, 71 SB, SW. LINCOLNSHIREt,— 64*, 66*, 69, 70*, 83*, 84*, 86*, 86*. MERIONETHSHIBEt,— 59 NB, SE, 60 NW, 74, 75 HE, SB. MIDDLESEXt,— It NW, SW, 7* 8t. MONMOUTHSHIRE,— 35,- 36, 42 SE, NB, 43 SW. MONTGOMBRYSHIREt,— 66 NW, 69 NE, SE, 68, 74 SW, SE. NORFOLKt,— 50 NW* HE* 64* 65* 66*, 67», 68*, 89. NORTHAMPTONSHIRB,— 64* 45 NW, NE, 46 NW, 52 HW, NB, SW, 63 NE, SW, & SE, 63 SE, 64. NORTHUMBERLAND,— 102 NW, NE, 106, 108, 107, 108*, 109 . 110, NW* SW*, NE*, SE. NOTTINGHAM,-70*, 71* NE, SE, NW, 82 HE* SE*, SW, 88 86, 87* BW. OXFORDSHIRE,— 7*, 13* , 84* 44* 46* 53 SE*, SW. PEMBROKESHIREt,— 38, 89, 40, 41, 58. RADNORSHIRE,— 42 NW, NE, 56, 60 SW, SE. RUTLANDSHIRE,— this county is wholly included within Sheet 64*. SHROPSHIRE,— 55 NW, NE, 66 NE, 60 NE, SE, 61, 62 NW, 73, 74 NE, SE. SOMERSBTSHIREt,— 18, 19, 20, 21, 27, 35. STAFFORDSHIRE*,-64 NW, 55 NE, 61 NE, SE, 62, 63 NW, 71 SW, 72, 73 NB, SB, 81 SE, SW. SUFFOLK,— 47* 48*, 49* 50* 51*, 66* SB*, 67". SURREY,— 1 SWt, 6t, 7* 8t, 12t. ' SUSSEX,-^*, 6t, 6t, 8t, 9t, lit. WABWICKSHIRE,— 44* 46 NW, 53*, 54, 62 NB, SW SE 63NW, SW, SE. , WESTMORLAND,-97 NW* SW*, 98 NW, NE*,'sE*, 101 SB*, 102. WILTSHIRE,-12», 13*, 14, 16, 18, 19t, 34* and 36t. WORCESTERSHIEB,-43 NE, 44*, 54, 66, 62 SW, SE SE. YORKSHIRBt,— 86-88, 91 NE, SE 92-87* 98 HE* SB*, 102 NE SE, 103 SW, SE, 104*. 334. MEMOIRS OF THE GEOLOGICAL SURVEY. ENGLAND AND WALES. THE GEOLOGY OF THE COUNTRY AEOUND EASTBOURI»^E. (Explanation of Sheet 334.) BY Clement Eeid, F.L.S., F.G.S. PUBLISHED BY ORDER OP THE LORDS COMMISSIONERS OP HER MAIESTY'S TREASURY. LONDON: PKINTED FOR HER MAJESTY'S STATIONERY OFFICE, BY WYMAN & SONS, LIMITED, FETTER LANE, B.C. And to be purchased, either du-ectly or through any Bookseller, from EYRE AND SPOTTISWOODE, EAST HARDING Street, Fleet Street, E.C, and 32, Aeinbdon Street, Westminster, S.W. ; or JOHN MENZIES & Co., 12, HANOVER Street, Edinburgh, and 90, West Nile Street, Glasgow ; or HODaES, FIGGIS, & Co., Limited, 104, Grapton Street, Dublin. 1898. /'rice S^xpence, £.V,. V ZLoZ EI3R35 A'SooTLtj. Ill PREFACE. The ground' described in the following pages includes a length of about 20 miles of the coast of Sussex, in which Beachy Head, Eastbourne, Newhaven, and Seaford are the chief places. It is contained in Sheet 334 of the New Series of the Geological Survey Map of England and Wales. This part of the country was long-ago brought to the notice of geologists, especially by Mantell and Dixon, who gave an account of the strata with illustrations of their fossil contents. Topley, in the Geological Survey Memoir on the Geology of the Weald (pp. 158, 159), supplied additional information, and made reference to the writings of previous observers. The Chalk cliffs between Seaford and Eastbourne have subsequently been described by Mr. Whitaker in further detail. The zonal subdivisions of the Chalk, first indicated in this district by Dr. Barrois, have since been more fully worked out by several zealous observers. The district to which the present pamphlet is an explanation was originally mapped for the Geological Survey by the late H. W. Bristow (in Sheet 5 of the Old Series, 1864), but the superficial deposits were not then represented. During the general revision of the Geological Survey Maps of the South of Ingland the ground was re-examined by Mr. W. A. E. Ussher, who in 1884 mapped the superficial deposits on the New Series 1-inch Map, the Secondary rocks being afterwards re-surveyed by Mr. Clement Reid on the 6-inch scale in the years 1889 and 1890. A complete series of these 6-inch maps has been made and deposited in the Office for public reference. The present Explanation has been prepared by Mr. Reid. It is intended only as a general guide to the use of the Map, until a more detailed, account of the whole surrounding region can be issued. The Cretaceous rocks will be more fully described in a monograph on the Upper Cretaceous Formations, by Mr. Jukes-Browne, now in preparation. This part of the Sussex coast is a favourite residential district, more noted for its healthiness than for its mineral wealth. The applications of geology, therefore, are there mainly such as bear on the desirability of building-sites, materials for building, and water-supply. Minerals for use outside the district are almost unknown. ARCH. GEIKIE - Director-General. Geological Survey Office, 28, Jermyn Street, London, S.W. 5th July, 1898. 1278, Wt. 7090, 500—11/98. Wy7&'S7 A 2 IV. CONTENTS. Preface by the Director-General Introduction Weald Clay Lower Greensand Gault Upper Greensand Chalk Woolwich Beds and London Clay - Clay with Flints Valley Gravel or Coombe Rock Alluvium and Shingle Disturbances and Surface Erosion Water Supply and Economics page iii 1 2 3 3 4 5 8 10 10 10 11 13 Fossils of the Middle Chalk ILLUSTRATIONS. Fig. 1. Pecten asper, Lam., >; r, -El -a I Fossils of the Upper Green- „ 2. Exogyra comca, Sow., y , ^^ „ 3. Vermiculariaconcava, Sow., J ,, 4. Ammonites rotomagensis, ■> Brong., I K ,,„™„„„ a„,„ ^ Fossils of the Lower Chalk - ,, 5. varians, oow., ,, 6. Scaphites sequalis, Sow., j „ 7. Echinoconus subrotundus, Mant., „ 8. Terebratulina gracilis, Sohloth., „ 9. Holaster planus, Mant., „ 10. Inoeeramus mytiloides, Mant., „ 11. Rhynchonella Cuvieri, d'Orb., ,, 12. Micraster coranguinum, n Leske., ,, 13. Marsupites ornatus, Miller, ,, 14. Rhynchonellaplicatilis(var. octoplicata). Sow., „ 15. Echinocorys vulgaris, Bregnius, ,, 16. Ostrea Bellovacina, Lam., ^ T„ ri -c • a ■ Fossils of the Woolwich ,, 17. Cyrena cuneiformis. Sow., )■ t> j ,, 18. Melania inquinata, Defr., j Map of part of the Foreshore near Beachy Head Fossils of the Upper Chalk - 8 9 12 [ 1 ] THE GEOLOGY OF THE COUNTRY AROUNB EASTBOURNE. Introduction. SfitfiET 334 of the Geological Survey Map takes in an area of 45 square miles in Sussex, including the eastern termination of the South Downs and the coast from Eastbourne to Seaford and Newhaven. The whole of this country, except the alluvial flats and a small spread of low gi'ound north of Eastbourne, consists of undulating Downs, with a bold escarpment facing east-north-east, vertical sea-cliffs facing south, and intricate winding valleys, now quite dry. Willingdon Hill reaches a height of 665 feet, and at a few other points heights of 600 feet are attained ; but most of these Downs are of considerably lower elevation, the highest cliff at Beachy Head being 525 feet. Two tidal estuaries break the line of vertical Chalk cliffs. That of the Ouse forms the harbour at Newhaven, and is navigable for a considerable distance inland ; that of the Cuckmere is much smaller, and is now almost blocked by a bar of shingle. North of Eastbourne the large alluvial flat, known as Willingdon Level, would often be flooded at spring- tides were it not for the enormous accumulation of shingle-beach which forms Langney Point. An attempt will be made in the following pages to explain the meaning of these various features. The formations represented on Sheet 334 are the following : — -r> , rShinele. Kecent < ,,, °. (^Alluvium. Pleistocene {ciay iS Fitts. -r^ /London Clay. \Woolwicli Beds. {Upper Chalk. Middle Chalk. Lower Chalk. Upper Greensand. Gault. liOwer /Lower Greensand. Cretaceous XWeald Clay. The successive outcrops of these formations when traced on the Map show that the area belongs to the southward slope of the exeat Wealden anticline, where this anticline is passing into the Tertiary syncline of the Hampshire Basin. Most of this synchne, however, is here beneath the sea, and the abrupt change of strike which takes place between Eastbourne and Beachy Head suggests that we may there have reached its eastern limit. 2 GEOLOGY 01' EASTBOURNE. Little of the land is of much agricultural value, great part of it being in the state of rough pasture, either alluvial meadow or open Chalk Down. The large extent of the open downs is one of the principal attractions of the district ; the Chalk slopes being famed also for their healthiness and the perfect dryness of the houses built on them, During the late autumn and winter months the higher Downs are, however, often capped with low clouds, the condensation from which supplies numerous dew- ponds. It should not be forgotten, therefore, that there may be a considerable difference in the winter climate and amount of sunshine between Eastbourne and the Downs less than two miles away, though the difference in the level may be no more than 200 or 300 feet. Weald Clay. Within the area here dealt with there is a very small exposure of the Lower Cretaceous rocks, and they are entirely unfossi- liferous. The Weald Clay occupies an area of a quarter of a square mile at Langney, but no actual surface-section was visible. The for- mation was met with, however, in some experimental borings lately made by the Eastbourne Water Company, one withm Sheet 334 being at the Pumping Station on the marsh north of Eastbourne. At this point a boring penetrated 201 feet into mottled red and grey clays without any sign of change. Though I washed and examined, microscopically various samples of the clay, no fossils could be found, and we are still without any means of accurately estimating the thickness of this division. Mr. Whitaker thinks that the samples are more like lower than upper Weald Clay. The boring, though an entire failure from the point of view of water-supply, was of great scientific interest, and must be referred to more than once. I will, therefore, here give details of the strata passed through, from a record and samples cornmunicated by Messrs. Le Grand & Sutcliff, my own notes being inserted in brackets : — Boring at Eastbourne. Thickness. Depth. Feet. Feet. [Alluvium, /0% 5 5 30 ^-'^l- \Blueclay 22 30 fGreen sand and clay [glauconitic] 29|- 59J [UpperGreensand,^r'^'*°"'^ fel^™tH ,- . . , . * ^^ 35i feet! \ ^^ ^ '^^^^^ ^^^'^ [whitish and ^ J' glauconitic] 2 62 ^Sandstone [glauconitic] 3| 65^ Stony clay [hard, dark, sandy clay\ „ „ki —junction beds ?]- / ^ °'2 Gault 171 238| \ Septarium J 339 Gault and fossils [/wocgramMS swZca^Ms] 102^ 341| Gault, green veins and fossils [^m-\ ,^ okii *- monites lauius] ) '' ^2 [Gault, 286 feet]. [Gault and Lowei- Greeiisand (?) 80J feet]. GEOLOGY OF EASTBOURNE. 3 Thickness. Depth. Feet. Feet. Gault and sand [coarse, loamy sand,\ , ^ „„„■, mixed black and green, at 360] / "" 2 Sand [moderately coarse, with glau-\ „, o,^ conitic grains, at 367] / ^ Gault ■ [clay] and sand [coarse sand] and small phosphatic nodules \ 65 432 . with glauconitic grains at 4001 J 'Weald clay [light-grey sandy clay,^ at 432. Dark-grey clay at 436. [Weald Clay, / Eed-mottled clay to 510. Whit- 1 .,q, „„., 201 feet]. ish silty clay, 6-inch seam, at 575. j Red mottled clay at 586 (no ^ change to bottom)] -' Another boring, in Jevington parish, but just beyond the limits of the Eastbourne map, penetrated 63 feet into Weald Clay of similar character. Lower Greensand. Though, following the original survey, a small outcrop ol Lower Greensand is shown on the map at Langney, it is by no means certain that the formation is represented near Eastbourne. West of Lewes, Lower Greensand is undoubtedly present, and several divisions can be traced in it ; but eastwardTit seems to disappear, so that Gault rests either directly on Weald Clay, or is only separated from it by beds of sandy and gravelly clay, perhaps representing the Folkestone Beds. There has been a considerable amount of erosion between these formations, and this circumstance makes the thickness of the Weald Clay near Eastbourne still more difficult to estimate. Gatjlt. This formation occupies about a square mile of the area north of Eastbourne, and is also exposed on the foreshore between Eastbourne and Beachy Head. The ledges on the foreshore represent, however, only some 50 feet of the higher beds, the lower deposits north of Splash Point being hidden under the beach. No good inland sections are to be seen, though occa- sional excavations show Gault at St. Anthony's Hill, Horsey, and Hydneye. Our knowledge of the formation within the East- bourne map must, therefore, be derived from the trial-boring at the Waterworks, ajid from the upper beds exposed on the greatly disturbed foreshore below high-water mark. If the sandy clay coloured on the map as Lower Greensand is included, the total thickness of the Gault in the boring will be 366| feet. Taking,' however, the clay-bed with Ammonites lautus as the base, we reduce the thickness to 286 feet ; but it should not be forgotten that A. lautus is a fossil usually found in a zone at some height up in the Gault, suggesting that part at least of the beds described by the well-sinker as " gault and sand" belong to the true Gault. 4 GEOLOGY OF EASTBOTJENE. The deposits seen on the foreshore consist of blackish sandy clays, sparingly fossiliferous but highly pyritised. They are brought in by a series of very curious overthrust faults, so that in at least one place Gault can be seen actually to overlie Lower Chalk. These disturbances will be again referred to (see p. 11). Upper Greensand. The Gault passes upward into a thick bed of sand or sand-rock full of grains of glauconite and usually fossiliferous. This Upper Greensand is well exhibited at the base of the cliff and on the foreshore between Eastbourne and Beachy Head,* but is there very difficult to measure, owing to the numerous folds and sharp faults which coincide in direction with the coast-line. It should be observed also that the coast-section is deceptive, for, besides faulting, there is a sharp dip inland, which makes the strata appear much thinner than they really are. By piecing together the evidence collected on the coast from certain inland well- sections, I have obtained a probable thickness of 45 or 50 feet for this division. The Upper Greensand towards the top becomes lighter coloured, calcareous, fine-grained and hard, and contains scattered phosphatic nodules. In this condition it is very similar to the basal beds of the Chalk, which also contain scattered glau- conitic grains. The exact boundary of the formation can only be ascertained by a reference to the fossils, though the sections of the junction-beds seen on the foreshore near Beachy Head are Fossils of the Upper Greensand. Fig. L Pecten asper, Lam. (§ natural size.) riG..3. Vermicularia concava,.'* 1^ i •. - .'\'. ■>Kv.;'V".''--i^:.:----V-v:.- >"-. i *> I-'. . ■ v.. .°^>;v .•:■■■■.■;■■.•.■■.:■•<■■.•..•(...■.•.•. ;-.--.^ 4 „ ..N.«;v • • •.■>.;■■.; ; / / '■' V''.*- >'^\/'"'- ''•;'''>si'.i^-V ;■/;?■: Jif; / /• •. /. v-■«;■:'''■■■^■■'■■■^;■.'0•■■-•■•■■-^■.v'^:■ v'J .■■■ ,' ° . .!i//'f>V^■•■•^;■■:■•■■V/.•/!?;;;-■-•.;l^.•ilv.:J I .' - 'A •■-I. |-.v ConmlieltaclL CIny-wiOi-FUnl. Upp«T QiaJk \^ lnd.UjaiiA9 tUractLon. ofDlp of Strata. MAP OF Py^RT OF THE. rORELSHOREl NEAR BEACHY HEAD. toward the west-north-west. The effect of this disturbance is only felt for a very short distance inland, but eastward under the sea it apparently becomes more violent, though without GEOLOGY OF EASTBOURNE. 13 submarine surveying it is impossible to say exactly what has happened. The disturbance is probably a broken unicline, like that of the Isle of Wight, with which it may be continuous. If this is the case the Chalk of the South Downs, unlike that of the North Downs, is not connected across the Channel with France. Contrary to the accepted idea the escarpment curves round Beachy Head and turns to the west. The bed of this part o£ the English Channel may thus be a continuation of the wide plain of the Weald, and forrtied like the Weald by the erosion of the softer strata. Another remarkable feature in the Eastbourne district is the occurrence in the Chalk Downs of numerous winding valleys, now quite devoid of water and having bottoms sloping at a much higher angle than that taken by the saturation-plane in the Chalk far beneath. Such a feature in pervious Chalk cannot be accounted for by any change in the amount of rain- fall ; it points to other conditions, which have now passed away. It is in all probability a relic of the Glacial Epoch, which in these southern districts did not lead to an accumulation of ice, but caused the rocks to freeze to a great depth, thus rendering them impervious to any rain that might fall in the summer. During that period the Chalk would be cut into valleys in the same way as any impervious rock, instead of immediately absorbing the heaviest rain, as it does at the present day. Water Supply and Economics. In a residential district of this character, water-supply is by far the most important practical application of geology. East- bourne, till quite recently, obtained its water from headings driven into the Upper Greensand at the Bedford Well, north of the town, and obtained so large a supply as to make the source difficult to understand, for the outcrop of the Greensand is apparently of insufficient area to yield so much. A dry season and the consequent lowering of the water-level by pumping caused, however, the influx of sea- water. The new Geological Survey shows that this well is in the remarkable disturbed belt which has just been described. This disturbance seems to have made itself felt in two ways. In the first place, by causing shattered Lower Chalk to abut against the Greensand, it let in a certain amount of water from the pervious Chalk above — a source which under ordinary conditions could not possibly be tapped by a well in the Greensand. The chemical analysis of the water and the unaccountably large supply obtained during a number of years support this view. Another result of the position of the well on the fissured belt was less fortunate, for it allowed sea -water to travel freely for a long distance and gradually to mix with the water of the well. As it was evident that other sources of supply were needed, the copious springs which formerly flowed into the sea at Holywell have now been taken, and wells have also been sunk at Wannock (north of the Eastbourne map) and at Friston. The latter of these localities 14 GEOLOGY OF EASTBOURNE. is in the middle of sparsely inhabited Chalk Downs, and ought to yield a large supply of water of excellent quality. The follow- ing analyses of waters from these new sources have been made by Sir Edward Frankland : — Eastbotjene. Waterworks. March 20, 1897. Parts per 100,000. (1) Holywell. (2) Friston. (3) Wannock. Total Solid Matters 33-24 37-08 25^24 Organic Carbon •055 •041 •043 Organic Nitrogen - •010 •012 •Oil Ammonia — — — Nitrogen as Nitrates and Nitrites •664 •656 •096 Total Combined Nitrogen •674 •668 •107 Chlorine 5-2 4^3 2^6 Hardness Temporary 14-5 16-9 15^2 „ Permanent 7-3 7^0 4-2 Total 21-8 23-9 19-4 (1) is from base of Middle Chalk. (2) is from Upper Chalk, shattered Lower Chalk. (3) is from " For Chalk waters they are all of moderate hardness, the Wannock Well remarkably so." Seaford and Newhaven obtain their supply from wells in the Upper Chalk ; but they also have been troubled by the influx of sea-water, and have been compelled to sink a new well further inland, at Poverty Bottom, in Denton.* The mineral resources of the Eastbourne area are few. The Gault, or rather its superficial weathered layers, is dug for brick- making at Horsey. The Upper Greensand yields a fairly hard sandstone, which was formerly taken from the reefs between tide marks and used for building-purposes. A good hydraulic lime is obtained from the marly Lower Chalk ; and occasionally the harder beds have been employed for building, though they are too soft for anything but mterior work. The Middle and Upper Chalk are more pure, and burn into a lime of ordinary character ; they are also used for marling the land. The higher part of the Upper Chalk is so pure that it is dug at Newhaven * For further information, see Memoir on the Water Supply of Sussex bv W. Whitaker and C. Reid. (In the press.) t-r ,' > i GEOLOGY OF EASTBOURNE. 15 and shipped for use in chemical works. An analysis of this Chalk from Meeching Chalk Quarry, made by Mr. Bernard Dyer, gives : — Carbonate of Lime Phosphate of Lime Carbonate of Magnesia Oxide of Iron and Alumina Silica Water, &c. 97 100-00 89 22 75 14 65 35 In this pit the flints which are picked out are black and have very thin rinds; the proportion of flints is about 1 ton to 130 tons of chalk. The Tertiary deposits jdeld sand and some brickearth, and also, at their junction with the Chalk, a hydrous aluminium sulphate, known as Aluminite or Websterite ; but this mineral is of no economic^ value. The extensive beach at Langley Point yields flint gravel suitable for use in the manufacture of pottery ; and certain parts of the alluvial mud of the Ouse can be used mixed with Chalk for cement-making. GBNERA£ USIHOIBS OF THE OEOLOGICAZi SUBVKY. The MEMOIKS of the GEOLOGICAL SUBVBY ot GREAT BRITAIN. Vol. I., 21». ; Vol. H. (in 2 Parts), 42«. N. WALES. By SIR A. C. EAMSAr. App., by J. W. SALXBB and B. ETHBRIDSE. 2nd. Ed. 21«. (Vol. HI. of Memoirs, &e.) LONDON BASIN. Pt. I. Chalk & Eocene of S. & W. Tracts. By W. WHITAKBR. 13s. (Vol. IV. of Memoirs, Ac.) (O.P.) Guide to the GEOLOGY of LONDON and the NEIGHBOURHOOD. By W. Whitakkr. 6th Ed. Is. TERTIARY FLUVIO-MARINE FORMATION of the ISLE of WIGHT. By EDWARD FOBBBS. 6s. The ISLE OF WIGHT. By H. W. Bristow. New Ed. By C. RBID and A. STRAHAW. Ss.ed. The ISLE OF PURBECK AND WEYMOUTH. By A, STRAHAN. lOS. 6dr. The WEALD (PARTS of the COUNTIES of KENT, SURREY, SUSSEX, and HANTS). By W. TOPLBY. 17«. 6d. The TRIASSIC and PERMIAN ROCKS of the MIDLAND COUNTIES of ENGLAND. ByE. Hnil. 6s. The FENLAND. By 8. B. J. SKBRTOHLT. 86s. 6d. The MANUFACTURE of GUN FLINTS. By S. B. J. SKERTOHIT. les. The SUPERFICIAL DEPOSITS of SOUTH-WEST LANCASHIRE. By C. E. DE RANOB. 10s. 6i. NORTH DERBYSHIRE. By A. H. GBBEN, C. LB NBVB FOSTER, and J. R. DAKYNS. 2nd. Ed. By A. H. GBBBS and A. SIRAEAN. 6s. 6d. BURNLEY COAL FIELD. By B. Hdll, R. H. TIDDEMAH [and Others]. 12s. YORKSHIRE COALFIELD. By A. H. Grbbn, R. Russbll [and Others]. 42s. EAST SOMERSET and BRISTOL COALFIELDS. By H. B. WooDWAfiD. 18s. WARWICKSHIRE COAL-FIELD. By H. H. HOWBLI.. Is. 6(J. LEICESTERSHIRE COAL-FIELD. By EDWARD HDLi. 3s. ERUPTIVE ROCKS of BRENT TOE. ByF. RuTLEY. 158. 6(J. FELSITIC LAVAS of ENGLAND and WALES. ByF. RTJTLBY. 9S. HOLDERNESS. ByC. EBID. 4s. sons and SUB-SOILS from a SANITARY POINT of VIEW. By H. B. Woodward. 2s. M. The PLIOCENE DEPOSITS of BRITAIN. ByC. BEID. 5s; 6« The JURASSIC RO,CKS OF BRITAIN.— Vol. I. YORKSHIRE, 8S. Bd., Vol. II. YORKSHIRE, Fossils, 12s. By C. Fox- S*BANOWAYS< Vol. m. LIAS OS' ENGLAND (Yorkshire excepted). 7s. 6d. By H. B. WOODWARD. Vol. IV. The Lower Oolitic Rocks of England. 10s: By H. B. WOODWARD. Vol. V. The Middle and Upper Oolitic Rocks of England. 7s. 6d. By.H. B. Woodward. BRITISH ORGANIC REMAINS. Dboadeb I. to Xm., with 10 Plates each. Price 4s. 6d. each 4to ; 2s. 6d. each 8to. MONOGRAPH I. On the Genus PTERYGOTUS. By T. H. HDXIEY, and J. W. SAtTBR. 7s. MONOGRAPH II. On the Structure of the BELEMNITID^. ByT: H. HnxiBY. 2s. 6*. MONOGRAPH in. On the CROCODILIAN RBMAlSfS found in the ELGIN SANDSTONES. By T. H. HnxiBY. 14s. 6d. MONOGRAPH IV. On the CHIMjEROID FISHES of the British Cretaceous Rooks., By E. T. NEWTON. 6B. The VERTEBRATA of the FOREST RED SERIES of NORFOLK and SUFFOLK. By E. T. NBWION. 7s. 6d. The VERTEBRATA'tpf the PLIOCENE'DEPOSITS of- BRITAIN. By E. T. NEWTOK. 4s. Miaeum Catalogues, ikb. i-^ HANDBOOK to the MUSEUM of PR:aCTICAL GEOLOGY, ed. HANDBOOK to the COLLEfcllON'of BRITISH POTTERY and PORCELAIN. iB,, FOSSILS :— CAMBRIAN and SILURIAN, 2s. M. ; CRETACEOUS, 28; M. ; TERTIARY and POST-TERTIA&Y, Is. 8d. SHEET HEUOIBS OF THE GEOLOGICAL SUBVEY. Those marked (O.P.) are out of Print. 1,2,7 - - GEOLOGY OF LONDON, &c. By W. WHITAKBR. VbLI.,6«. Vol. It, 6s. 4 • - - FOLKESTONE and RYE. By*. DREW. Is. 12 - - - S. BERKSHIRE and N, HAMPSHIRE. By HJ W. ?BIS*0W and W. WHITAKBR. 3s. (O.P.) 13- - - PARIS of OXFORDSHIRE and BERKSHIRE. By E. HnLL and W. WHITAKBR. 3s. (O.P.) S4 - . . PARTS of WILTS, and GLOUCESTERSHIRE. By A. C. RAmSAY, W. T. AVEMNB, and E. H»Ll. Sd. CHELTENHAM. By E. HCIL. 2s. 6*. - BANBURY, WOODSTOCK, and BUCKINGHAM. By A. H. GRBBN. 2s. 48 SW - -WOODSTOCK. ByE. Hnil. Is. 47 - . . N.W. ESSEX & N.E. HERTS. By W. WHIIAREB W. H PENNING, W. H. DALTON, & F. J. BENNSn. 38 ea. 48 SW - - COLCHESTER. By W. H. DALTON. Is. 6d. 48 SE - - EASTERN END of ESSEX (WALTON NAZE and HARWICH). By W. WHITAKBR. 9d. 48 NW, NE ■ IPSWICH, HAlbLEIGH, and FELIXSTOW. By W. WHITAKBR, W. H. DAMON, & F. J. BENNETT. 2s, 498, 60 SE - ALDBOROUGH, dec. By W. H. DALTON. Edited, with additions, by W. WHITAKEB. Is. 4»N • - SOUTHWOLD. By W. WHIIAKER. 2s. ed. 60 SW - STOWMARKET. By W. WHITAKBR, F. J. BENNETT and J. H. BtAKE. Is. 50 NW - - DISS, EYE, &c. By F. J. BENNETT. 2s. 60 NE - - HALESWORTH and HARLBSTON. By W. WHITAKBR and W. H. DALTON. Is. 51 SW - CAMBRIDGE. By W. H. PBNNINO and A. J. Jdkbs-BROwne. 4s. ed. 61 SE - - BURY ST. EDMUNDS and NEWMARKET. By F. J. BENNETT, J. H. BLAKB, and W. WHITAKEB. Is. 61 NE - PARTS of CAMBRIDGESHIRE and SUFFOLK. By W. WHITAKEB [and Others]. 2s. 63 SE - - PART of NORTHA,MPTONSHIEE. By W. T. AVBLINE and RICHARD Tbenoh. 8d. 63 NE - PARTS of NORTHAMPTONSHIRE and WARWICKSHIRE. By W. T. A7BLINE. 8d. (O.P.) «3 SE - PART oJ LEICESTERSHIRE. By W. TALBOT AvBLINB and H. H. HOWBLL. Sd. (O.P.) 64 - - RUTLAND, Ac. By J. W. JDDD. 12s. 6d. es ■ ■ ■ S.W. NORFOLK and N. CAMBRIDGESHIRE. By W. WHITAKBR, S B. J. SKBRTCHLY, and A. J. Jc Browne. 38. SHEET MEMOIRS OF THE GEOLOGICAL SVKVXY— continued. NORWICH. By H. B. WOODWARD. 7«. ATTtEBOKOtTGH. By F. J. BENNETT. Is. 6d. E. DEREHAM. By J. H. BLAKE. Is. ed. YARMOUTH and LOWESTOFT. ByJ. H.BLAKE. 2s. CROMER. By C. REID. 6s. FAKBNHAM, WELLS, &c. By H. B. WOODWARD. 2s. S.W. LINCOLNSHIRE, &o. By A. J. Jckbs-Bkowne and W. H. DALTON. 4s. NOTTINGHAM. By W. T. AVBLINB. (2nd Ed.) Is. RHYL, ABERGELE, and COL WYN. ByA. Steahan. (Notes by B. H. TiddBMAH.) Is. 6i. FLINT, MOLD, and RUTHIN. By A. STKAHAN (Parts by C. E. DE RANOE). is.6d.; Supplement, 2d. PRESCOT, LANCASHIRE. By E. HULL. (3rd Ed. With additions by A. STEAHAN.) 3s. ALTBINCHAM, CHESHIRE. By E. HULL. 8d. (O.P.) CHESTER. By A. STEAHAN. 2s. STOCKPORT, MACCLESFIELD, CONGLETON, & LEEK. By E. HULL and A. H. GEEEN. is. PARTS of NOTTINGHAMSHIRE and DERBYSHIRE. By W. T. AVELINE. (Znd Ed.) 6d. PARTS of NOTTINGHAMSHIRE, YORKSHIRE, and DERBYSHIRE. (2nd Ed.) By W. T. ATBLINE. Is. LINCOLN. By W. A. E. US8HBE, A. J. JUKES-BEOWHE, and A. STEAHAN. 3s. EAST LINCOLNSHIRE. By A. J. JUKES-BKOWNB. Ss. 6d. N. LINCOLNSHIRE and S. YORKSHIRE. By W. A. E. USSHER [and Others]. WAKEFIELD and PONTEFBACT. By A. H. Geben. ed. BARNSLEY. ByA. H. GREEN. 9d. OLDHAM. By E. HULL. 2s. PART (^ the YORKSHIRE COAL-FIELD. By A. H. GEEEN, J. R. DAKTNa and J. C. WARD. Is. DEWSBURY, (So. By A. H. GEEEN, J. R. DAKYN3, J. C. WARD, and R. BUSSBLL. 6d.^ BOLTON, LANCASHIRE. By E. HULL. 2s. WIGAN. By Edward Hull. (2nd Ed.) is. (O.P.) The COUNTRY between LIVERPOOL and SOUTHPORT. By C. E.. DE RANOE. Sd. (O.P.) SOUTHPORT, LYTHAM, and SOUTH SHORE. By C. E. DE RANOB. 6(2. The COUNTRY between BLACKPOOL and FLEETWOOD. By C. E. DE Ranoe. 6d. SOUTHERN PART ol the FURNESS DISTRICT in N. LANCASHIRE. By W. T. AVELINB. 6d. BRADFORD and SKIPTON. By J. R. DAKINS, C. Fox-Steanqwatb, R. RUSSELL, and W. H. DALION. 6d. i NORTH and EAST of HARROGATE. By C. Fox-Strahowats. ed. The COUNTRY between YORK and MALTON. By C. Fox-SIRANQWATS. Is. ed. N. and E. of LEEDS, and near TADCASTER. By. W. T. AVBLINE, A. H. Green (and others). (O.P.) COUNTRY between YORK & HULL. By J. R. Daktns, 0. Fox-STEANGWATS, and A. G. CAMERON. Is. DRIFFIELD. By J. R. DAKTNS and C. FOX-Stean(}WATS. 9d. BRIDLINGTON BAY. By J. R. Daktns and C. Fox-STRAHOWATS. Is. SCARBOROUGH and FLAMBOBOUGH HEAD. By C. Fox-STRANOWATS. Is. WHITBY and SCARBOROUGH. By C. Fox-STRANOWATS and G. BARROW. Is. 6d. NEW MALTON, PICKERING, and HELMSLEY. By C. Fox-STRAN(3WATS. Is. ESKDALE, BOSEDALE, (fee. By C. Fox-Steanowats, C. Reid, and G. BARROW. Is. ed. NORTHALLERTON and THIRSK. By C. Fox-STRANOWAYS, A. G. Cameron, and G. BAREOW. Is. 6d. INGLEBOROUGH. By J. R. DAKYNS, R. H. TiDDBMAN, W. GUNN, and A. STEAHAN. 2s. MALLERSTANG. By J. R. DAKYNS, R. H. TiDDBMAN (and others). 3s. 6d. KIBKBY LONSDALE and KENDAL. By W. T. AVBLtNB, T. MO K. HUGHBS, and B. H. TIDDEMAN. 2s. KENDAL. By W. T. AVBLINEandT^MoK. HUOHBS. 2nd Ed. by A. STEAHAN. 2s. NORTHERN PART of the ENGLISH LAKE DISTRICT. By J. C. WARD. 9s. APPLEBY, ULLSWATER, and HAWESWATER. By J. R. DAKYNS, R. H. TIDDEHAN, and J. G. GOODOHILD. Is. ed. ■ NORTH CLEVELAND. By G. BARROW. Is. 6d. - OTTERBUBN and ELSDON. By HUGH Miller. 28. ed. ■ CHEVIOT HILLS. By C. T. Clough. Is. ed. - PLASHBTTSandKIBJiDER. By C. T. CLOUGH. Is. - WOOLER and COLDSTREAM. By W. GUNN and C. T. CLOUGH. Is. ed. ■ NORHAM and TWEEDMOUTH. By W. GUNN. ed. ■ COAST sonth of BERWICK-ON-TWEED. By W. GUNN. 9d. 329 (New Series) BOURNEMOUTH. By C. REID. id. 332 (New Series) BOGNOR. By C. REID. ed. COAL-FlpLDS AND OTHER MINERAL DISTRICTS.-Scale.sijE inches to a mile. The Coal-fields and other mineral districts of the N. of England are in part published on a scale of six inches to a mile, at is. to 68. each. M.S. Coloured Copies of other six-inch maps, not intended for publication, are deposited for reference in the Geological Survey Ofttoe, 28, Jermyn Street, London. MINERAL STATISTICS. The produce of Coals, Metallic Ores, and other Minerals. By R. Hunt. From 1863 to 1866, inclusive. Is. ed. each, 1868. Part I., U. ed. ; Pwrt II., 6s. 1859, Is. ed. 1880, 3s. ed. 1861, 2s. ; and Appendix, Is. 1862, 2s. 6d. 1863, 2s. ed. 1864, 2». 1866, 28. ed. 1866 to 187d, and 1876 to 1880, 2s. each. (These Statistics are now published by the Home O^lee.) THE IRON ORES OF GREAT BRITAIN. Part I. The North and (North Midland Counties of England (0«* qf print). Part n. South StaflordShtoe. Price 1«. Part III. South Wales. Price Is. 3d, Part IV. The Shropshire Coal-field and North Staffordshire. Is. Sd.