I., d ; C.Jh ; :• y •,.. ,. t "> *5^.! , V~ . * PREFACE. Vll its angles and rotundities ; his works are real representations, they may be touched and handled, whilst those of the painter are mere illusions, which vanish, as it were, at the touch. Complete figures, by which both the senses of seeing and feeling are gratified, satisfy the infant mind better than bare out¬ lines ; and the study of mathematics is likely to be prosecuted with more ardour after young persons have previously amused them¬ selves with converting quadrangles and pa- rellelograms into tables, chairs, houses, churches, bridges, and ships. But, independently of the mathematical studies for which it prepares the youthful mind, Papyroplastics, or the art of model¬ ling in paper, has the additional advantage of teaching manual dexterity and the knowledge Vill PREFACE. of proportions, of imparting a taste for the arts of design, and, above all, of affording a salutary antidote to that listless indolence, that pernicious love of cards, or that rage of indiscriminately reading any book at random, which are unfortunately tolerated in many respectable families during the long winter evenings, and which are alike unfavourable to the comfort and to the best interests of young persons, as they greatly tend to ob¬ struct them on their road to duty and hap¬ piness* DIRECTIONS FOR MODELLING WITH CUT PAPER FIGURES 14 terminating point, as often as required; here, of course, three times. The remainder n m must then be divided into as many equal parts as the number of times the line is to be set off upon the other, less one; here therefore into two parts. After which, first take the shorter line and then one of the two equal parts, as intermediate spaces, beginning precisely at one of the extremities of the longer line. And the same manner of proceeding takes place when the line is to be set off four, five, six, &c. times. X. To set off a line several times upon a longer one and so that there be not only equal intervals but that the line may be at an equal distance from both extremities of the greater line; as, for in¬ stance, the line p q (fig. 8. pi. 1.) three times on the line r s . The shorter line p q , as in the preceding case, is to be placed on the longer one r s three times 20 point s, an arc meeting both the lines that in¬ close the angle or its sides* as here at t, and v. Afterwards divide the arc between the two lines of that angle into as many equal parts as the an¬ gle is to be divided into, in this case of course into four; and then draw lines through these points of subdivision to the angular point s. The larger or smaller the arc t v is, in case of similar distances, as s v, which however may be more or less considerable, the larger or smaller is the angle itself. The length of the lines ha$ no effect on the magnitude of the angle, which varies only according to the inclination of the lines towards each other. XVII. To dram a line to be evert/ where equidis¬ tant from another , or parallel to another line; ai, for instance , the line w x (fig. 14* pi. 2*) pc- rallel to the line z b. From any two points* at pleasure, as a c , in the line z b * with an opening of the compasses equal 30 longer one, according to prop. VIII. Afterwards draw on that point, as at li and k , lines at right angles; make each from the greater line equal to the distance at which the short line is to be, and join the two points with a line. Then draw the two inclined lines. Whenever k the sides are all unequal, in any four-sided figure, such a figure is usually called a Trapezoid. XXXIII. To draw an irregular Polygon , viz. a Figure of more than four unequal sides ; as, for instance , the irregular Pentagon , fig. 25, plate 2. Draw the lines and angles in proper succes¬ sion : viz . first draw a line of any given length, form at its extremity one of the given angles, make its yet undetermined side equal to that of another of the given lines, and form again at its extremity one of the given angles, and so on. To copy such a drawn polygon accurately, it 39 of the sides within which the object to be repre¬ sented is inclosed. This is the main point. And before you begin to draw, consider how much paper is required, and how it can be best made use of. 4. The dotted lines always direct the folding, but they must not be dotted on your own draw¬ ing. if you wish particularly to mark them, they may be drawn finer than the others, or distinr guished by little strokes. 5. Begin with making the given models with white paper only, and as simple at first as pos¬ sible, leaving out small and less necessary parts. Adhere at first to the size here stated, and com¬ pare your own flat paper figure with the one here given. 6. Be not over hasty. Read only as much of the directions at once as may be performed in a little time, and endeavour to imitate directly whatever you clearly comprehend. 7. But should you not succeed at once, be not 64 Determine, as at q , the fiat paper figure for the supporters, afterwards a small rectangle to be rolled up for the flue, and an additional rect¬ angle to be folded for the exterior circumference of the mouth of the stove. Draw also the before- mentioned hearth-plate, like the table-board. Construction. The flat paper figures are first cut out in the rough, according to the undotted lines, and then folded according to the dotted ones. In joining, the point l must fall exactly upon the point m , and all the margins are put under and concealed. When the stove is fixed on its plate, and provided with the flue and the circumference of the mouth, it is placed on the supporters, and along with these, fastened upon a piece of stiff paper or thin pasteboard, in the shape of a rectangle. The stove may be painted black with fine white cross lines, imitating Dutch tiles, and this is best done before joining. 65 Observations . The oblong rectangle of thin pasteboard on which the stove is to be fixed, may be folded in such a w ay that one part represents the floor, and the other the w all of a room, at such a distance from each other as to make a right angle. The stove will then be placed as stoves usually are in Germany. A Watch-stand. Plate 5. With a flat paper figure similar to that of the stove. Proportions. Distinguish the upper, middle, and lower part. The middle one, as the principal part, is as broad as it is long, but its height is about a fifth more than its length. The lower part is only a fourth D 67 Construction . Having drawn the dial and the hands on a se¬ parate paper, fix it in the interior of the watch- stand, which may be painted black, brown, grey, or spotted, and may have additional ornaments made with a pen or pencil. A Pair of Steps. Plate 5. With the flat paper figures over and under v w, Plate 15; but the young artist had better make it on a larger scale than represented in the plate. Proportions. The steps here are chiefly to be attended to. They are generally at the same distance from each other as their breadth, and four times as long. The side pieces must be of such a breadth that the steps do not project. d 2 09 4. Draw three times more such a step iike the two upper narrow rectangles over v w, with margins to represent the thickness. Afterward the supporters or props, as at f. Construction . Cut the flat paper figure over v w, as marked here by the undotted lines, give it the proper folds for the side pieces and the upper step, after¬ wards cut and fold the remainder ; viz. the three lower steps and the two supporters ; the former must be carefully cut, and then folded according to the dotted lines, so as to leave about the same spaces, to represent the thickness both of the back and front of each step ; afterwards join the steps to the side pieces upon the sloping lines. When all is properly joined, the steps viewed sideways must look as they do on the third Plate. The steps might also be contrived thus:—De~ 74 Observations. If it be a tiled roof, paint it first red or brown, and then the tiles as below to the right and left on the fourth Plate. If it be a slated roof, paint it first blue, and then the slates as above to the right and left on the fourth Plate. Instead of cutting the windows out, they may be painted black, and the sash or casement white. Instead of cutting the door out and represent¬ ing it as open, it may be painted as if it were shut. The shutters may be painted in the same way. But both door and shutters may likewise be made with fine wood shavings. A Cottage. With a flat paper figure like that of the gable- roofed house, Plate 16. The proportions and drawing are likewise the same with those of the gable-roofed hous e. 90 When all is dry, the other parts must be foTtisu according to the curve lines marked here. The bottom and the side pieces must have the proper bend, as over z. For the two benches or seats, which are at a tolerable distance from each other, a small slip of paper is to be folded as under z. Such a boat requires particularly strong paper, and may be painted a brown or grey wood colour. A Sledge. Plate 9. With the fiat paper figure close to b d, Plate 17 . Proportions . These are given by the following Drawing. 1. Draw the rectangle b c and a similar one 9i over b d, each only one-third as high or broad as long. With the distance c d, describe from /the two parallel arcs, distant from each other about a ninth part of c d. Produce the perpendicular lines g and h up to the line bd, and draw the two lines g to the left, and h to the right, in the proportion of two-thirdsof c d. 3. Determine all the rest as is clearly seen here, Construction. After having cut out in the rough, and lined the paper if it be too thin or coloured, fold ac¬ cording to the dotted line b d, and cut according to the undotted lines, holding the two halves of the paper figure one upon the other. Hence there is no occasion for any further delineation of the rectangle over b d. Then open the paper, smooth it, and finish the folding; all parts here must be bent towards the point /. The body of the sledge is soon formed, and the remainder is 93 How the rudder is to be made of wood and fastened, may be seen at h, Plate 20. The main¬ mast is almost as long as the ship; the second mast a little shorter. Each sail consists of a rectangle, whose breadth is two-thirds of its length. It is fastened here and there on the mast. The main body of such a ship may also be made at both ends like the boat, only the two arcs must in one place be made somewhat longer by opening the compasses a little, wider, and the cabin made separately must be placed where the shorter arcs begin and do not intersect each other. In this latter case the rudder consists only of a single crooked piece of wood, somewhat like k , Plate 21. that under s or over r on the 16th Plate. The handle may be made separately with a slip of very strong paper. A Chiffonniere. Plate XXII. Fig. 1. The flat paper figure is nearly the same as that of the Table over n p, Plate XII. which served also for the Chest of Drawers, Plate III. Observe only that on this 22d Plate, Fig. 1. a is the front, in which there are to be two doors with a key-hole. b b represent the two sides. d the top, under and against which are fastened the joinings of the back and sides, as well as the projecting part of the top. The Chiffonniere itself, when ready, may be painted a brownish colour, so as to imitate ma¬ hogany. The legs may have four small yellow metal beads fastened to them, in imitation of balls, 100 In which case the legs may be made rather shorter than the drawing. A Sofa. Plate XXII. Fig. 2. The flat paper figure of a Chair over g h ,- Plate XII. which served for the Arm-chair, may also be consulted here, but observe on Plate XXII. tig. 2, that the seat k is about two and a half times longer than it is broad. The sides l are twice as long as broad, and joined to the back m taking the curve of the back; but at ii they are rolled close. The Plate XXII. represents only half the sofa; the other half, which is accurately to correspond with this, must be supplied by the young artist. . The seat itself, and the sides, may be painted black, as if they were horse-hair; and the legs and frame may be painted brown, to imitate ma¬ hogany. Preparing for Publication , in 12 mo. THE ART OF WORKING IN PASTEBOARD; EPITOMIZED FROM THE GERMAN, BY D. BOILEAU. This little book, which has already gone through four editions in Germany, is from the pen of one of the professors in the cele¬ brated Seminary of Sc/mepfenthal, where such useful and inge¬ nious arts are judiciously combined with the usual branches of education. It will be found well calculated for those who are desirous of learning an agreeable manual occupation, either as a matter of amusement or emolument. Parents and heads of Schools, who are often at a loss how to furnish rational employment for the leisure hours of their young people, will find this a suitable book to put in their hands, as the art of which it treats is founded upon the knowledge of Geometry. And lastly, manufacturers of articles in pasteboard, by combining a degree of Science with their manual experience, will be enabled to save time and materials, and to give a greater perfection to their productions. W. WILSON, PRINTER. VI, SKINNER-STREET, LONDON. ■ W. Wilson, Printer, 57, Skinner-Street, London, PREFACE TO THE SECOND EDITION. The approbation which this little Essay on Papyro-Plastics has met with, has been so general, that the first edition was sold in a few months. To render the work still more deserving* of the patronage of an enlightened public, and to insure its constant success, great pains have been taken to enlarge, im¬ prove, and correct it. Many of the flat paper figures having been found rather in¬ correct upon trial, they have all been re- Xll CONTENTS. Page A Sentry-box . 51. A Thatched-house...... 54 A Pigeon-house... 56 An Inkstand .. 60 A German Stove . 62 A Watch-stand .. 65 A Pair of Steps. 67 A Small House with Gable Roof. 70 A Cottage. 74 A Barn and Stable ... 75 A Paling, or a Palisade. 76 A Small House with a Sloping Roof . 76 A Monument... , .. 79 A Town House . 80 A House with a Gable Elevation in front. 80 A Court or Garden Gate ... 82 A Bridge . 82 An ancient Tower....... 84 A Boat . 88 A Sledge .... 90 A Ship. 92 A Church ... 94 2 shape of a triangle, a representation of which is given. 2. The cutting is performed either with scissors or with a penknife. When the latter is used, the paper should be laid on a small board of soft wood or pasteboard; and whether the paper be cut with scissars or with a penknife, margins must be left on the cut paper figures for the pur¬ pose of glueing them together. 3. In folding, particular attention is to be paid to its being done in a straight line. 4. The joining may be effected with glue, gum arabic, paste, or wafers, the latter being easily converted into a kind of paste when properly wetted. Care however must be had to glue only the edges or margins left for that purpose in each cut paper figure; and in some cases recourse must be had to cording or fastening with small slips of tin, until the parts glued be properly joined and perfectly dry. 5. Of the articles used for joining, the glue 16 4 Such a meeting of two lines in one point is called an angle. Whenever a line meets an¬ other without having any inclination, it is a right angle^ and the line itself in this case is said to be standing right angularly, or perpendicularly, or straight upon the other. When the lines are more inclined to one an¬ other than the quantity of a right angle, it is called an acute angle; but when they are less inclined to one another than a right angle, it is an obtuse angle. Whenever a line is not per¬ pendicular upon another, it is inclined. To describe an arc from a given point, place one end of the compasses on that point, and de¬ scribe the arc with the other end. XII. To draw a perpendicular line upon another, as, for instance, the line g f upon the line d f (fig.10.pl. 1). This is best done with a triangular ruler. Put the common ruler against the line on which the 26 XXVI. To describe any proposed Triangle accu¬ rately. Consider the sides of the proposed Triangle as given lines, and proceed. When the triangle is equilateral, according to prop. XXII. When it is an Isosceles, according to prop. XXXIJL When it is a Scalene, according to prop. XXIV. And when it is a right-angled Triangle, ac¬ cording to prop. XXV. XXVII. To make four Lines meet at their Extre¬ mities, as, for instance , those in fig. 23, pi. 2. Let the four given lines be two of them each equal to f and two each equal to g. Make two of them meet in a point, making any angle at pleasure, viz. make an angle and its two sides equal to the two given lines, as here the line b equal to the line g, and the line c equal to the 34 it, after having actually drawn the curve line. The rest is easy. The width which is to be added to the divided arc consists, consequently, of the parts made, in the pentagon, of one, in the hexagon of two, in the heptagon of three parts, and so on, so that there be always four parts, left remaining. XXXVII. To draw an Elliptical Circumference , such, for instance, as that (fig. 28, plate 2). Draw a line, and placing the compasses on it, describe two circles, each of which passes through the centre of the other. Afterwards with the length x % describe, upon and under that line, two equilateral triangles, and lengthen, as may plainly be seen here, the sides of these triangles; this gives the limit of the arcs required to round it, whose centres are in the angular points of the triangles above and under fig. 26. 45 Construction. After the flat paper figure has been cut out in the rough, fold it so that the sides not marked come to lie one upon the other, excepting how¬ ever the hack, the marked side of which comes to lie upon the marked side of the seat. The figure then is cut out more accurately, so that the feet stand free; the open work of the back appears, and margins of proper breadth are left for joining. If the parts now meet exactly* as for instance the point l the point m , proceed to glueing so that the margins he not visible on the outside. The hack must be a little inclined. Observations. Should coloured paper be preferred, brown, spotted, or streaked like wood, will he most suit¬ able. 51 2. Draw, according to the directions given re¬ specting a table, the feet, the top, and the draw¬ ers; and attend to the margins for joining. I * * Construction. Like that of a table. Instead of real drawers, narrow rectangles may be fixed. A Sentry-box. Plate 4. With the flat paper figures over and under w x. Plate 13. Proportions. As long as broad; but laterally, or from the front to the back, a little more than one-third of the height. The door is half as broad as the breadth, and about five times and a half as high as it is broad. 55 higher, and leaving out the side-windows. The roof and the bottom must, of course, be longer, and project a little. Construction. It is nearly the same as that of the sentry-box. The roof may be painted, or actually covered with thatch, in the following manner: Cut good straw of a fine yellow colour into small pieces some¬ what longer than the length of the roof down¬ wards, split them, do the hollows over with paste or glue, and fix them one close to the other on the roof, beginning by the gable end, so as to be all even at the top. When sufficiently dry, clip them equal with a pair of scissars, and make them project a little. Lay also some straw cross ways at the top. See plate 4, above to the left. 56 A Pigeon-house. Plate 4. With the flat paper figures Plate 14, and under Jc , Plate 15. Proportions . The bottom and side-walls are five equal qua¬ drangles. The roof consists of four equilateral triangles. The door is about half as high or as broad as one side of the quadrangles. Each of the four perches is about as long as the door is high, and a fourth as broad. The pole, which goes below through the bottom of the pigeon-house, is altogether four times as long as the house is broad; its lower end is a little thicker than the fourth of this breadth, but the upper end not so thick. The ground of the base is a quadrangle which has double the length or breadth of the pigeon- house ; but the sliding ledges are full as long as i 61 of the ink-glass ; pricked through with a fine pin, it will give the holes for the sand to pass through the sand-box. But to find the middle points for the circular line, draw two diagonals on each of the two quadrangles. A chest, like the table drawer, will serve for the stand itself; only the front ledge must be ex¬ actly like the back one. The ink-stand must not be too small, that there may be sufficient room for the ink-glass and sand-box; the latter may be rendered moveable by means of an uncovered cube, into which it might be placed ; but this is rather difficult, and tedious to contrive. Observations . The ink-stand may be painted, or made with coloured paper. A grain of seed, or a very small wax pearl, may be fixed with a little glue or gum against the sand-box, to serve as a knob. 62 A German Stove. Plate 5. With the fiat paper figures over l m and close to q. Plate 15. Proportions . The stove, independent of the two supporters, consists of two parts. The lower part is as high as it is long, but only two-thirds as broad. The upper is as high as the lower part, but about a tenth or twelfth shorter and narrower. The height as well as the breadth of these two parts consequently are determined by the given length. The height of the two supporters is a fourth of this length. But the hearth-plate on which the lower part of the stove rests, projects but little, say as much as the upper is narrower than the lower part. The door-shaped space in the upper part is a rectangle, which on both sides and at the top recedes about a third of the front breadth of the upper part. 75 Construction . The same as with the aforesaid house; only if the roof is to be thatched, it must be done like the top on the left, or on the right below, in the sixth Plate. In the former case it is actually covered with thatch, like the thatched house; in the latter it is painted and covered in front of the gable with fine wood shavings. A Barn and Stable. With flat paper figures like those of the gable- roofed house. Proportions. 1. The Barn; about two-thirds as broad as long. If a cottage be joined to it, the barn must be longer, broader, and higher than the cottage: the door is as high as broad, and very rge. 2. The Stable. Twice as long as broad, but low, and not so high as the cottage, if this be joined 78 exactly in the middle, the length of the top of the roof, according to Prop. VIII. of the Introductory Exercises. Afterwards erect straight lines on the last-mentioned points 2. Take with the compasses one sloping side of the roof on the broad side of the building, and about as much in addition as the roof is to project on both sides ; and carry this length from the line b c to the right-angular lines on the same; draw’ the line which is parallel to this and the two sloping lines, one of which is c d. 3. Having first taken the two right-angular lines upon b c , draw once more the trapezium over b c, as here; and mark at the same time two margins for joining. 4. Opening the compasses as wide as the breadth of the building, and as much in addition as the roof projects on both sides, describe from c a small arc, like that at f; then from d with the length c d another small arc which intersects the former, and draw the lines c f and df. 79 5. Draw another such triangle as c d /opposite to it, and the two small flat paper figures for the windows in the roof, according to the directions for the gable elevation of the house on the seventh Plate. Construction. The same upon the whole as that of the gable- roofed house, only that the roof here must not be covered with thatch. A Monument. Consisting below of a cube, and above of a truncated pyramid. Make the cube as that in the first Plate, and the pyramid like the upper part of the watch-stand ; only with this difference, that it must be very high, at least three times higher than the cube, which must project a little. The monument may be painted like stone or marble, and decked with other ornaments; and 81 Drawing. Altering only the length, breadth, and height, it is the same as that of the house with the sloping roof. The length of the gable elevation must be taken exactly in the middle, according to Prop. VIII. of the Introductory Exercises ; but the roof of this elevation is to be drawn like k /, Plate 20. This line k / is less than twice as long as one of the sloping lines of the gable elevation ; but the right-angular line on its middle is obtained, by opposing, after the roof is fixed, a perpendicular ine from the sharp point of the gable elevation t> the roof, and taking its length with the com¬ passes, j « Construction. The same with that of the two houses with ga>le and sloping roof. A few steps may be adled to the door in front, by removing it a little hi^ier up. 1 85 round), is up to this roof twice and a half as high as the diameter, and the roof itself is as high as the tower is in diameter. The height of the upper ledge close under the roof is an eighth of the height of the tower up to it, and the little turrets lower down are about a half higher. Each roof of these little turrets is one and a half as high as a turret without the roof. The balcony is about a third as broad as long, half as long as the tower is in diameter, and half as high as the door behind it. The pillars are a third of the height of the tower without the roof, and a fourth as broad as they are high. Their lower part is about as narrow as half of their low r er breadth. The remaining proportions are easily found. Drawing. There is here only part of the flat paper figure of this tower without its roof, close to the line k l, which is equal to the requisite height. The 98 the sails, and a small part of the skeleton will then appear as below to the right of the said Plate. The trestle is contrived with small pieces of wood ; but it may likewise be made as the base of the pigeon-house. The slope of the sails and their axle-tree are also indicated on the 11th Plate. An Arm Chair. The same fiat paper figure as that of a chair ; only the three quadrangles one over the other must be made broader, and the two arms must be contrived with the fiat paper figure at r, Plate 20. The back as well as the seat may be covered with paper of a different colour, to give them the appearance of being stuffed. A small Basket. It may be made with a flat paper figure like /2 In.g-re-y^'M'eLa.ftle.y Jjith.og3i0 StrarioL In.g-re"jr& Ma.d.eleyL.it'hog' ' I ■ X PREFACE TO THE SECOND EDITION. drawn after models furnished by an intelli¬ gent correspondent, to whom we readily pay the tribute of our best thanks. The Ancient Tower, which faces the title page, has been coloured, to give young artists some idea how to proceed in colouring; and the Plates have been increased in number, to furnish students with additional objects for modelling, all from the same ingenious Correspondent, who has corrected the paper figures of the original models. * I 3 3 must be in such a state of thickness as to be like the white of an egg, or pretty thick oil, when suf¬ fered to drop from the vessel in which it is made: the gum arabic is to be dissolved in water so as to have the same consistency with glue; paste is best when made of starch or fine wheat flour; it is much cleaner than glue, but any brush or stick left in it, will cause it to ferment and render it too watery. 6. The painting is performed in the usual way with different colours or mixtures of colours, and with brushes proportioned to the size of the cut paper figures to which the painting is to be ap¬ plied. But every thing depends on the goodness of the paper, which should be strong, stiff, and very smooth. Laid royal, or drawing paper, Bristol board of moderate thickness, is the best. A thin¬ ner sort of paper may be employed, whenever it is to be used double ; and in this case, both sheets of paper are to be done over on one side with b 2 8 common ruler or a straight slip of paper may be held against it, and the divisions may be marked on the same. Proposition III. may also be done in a similar manner. V. To give the distance of a point from an opposite line , as,for instance , the distance of the point h from the line cd . (See plate I. fig. I.) One end of a pair of compasses, that have been previously opened nearly as wide as is the dis¬ tance of the point h from the line c d , is placed on this point b } and the other end is made to describe an arc which touches the line, but does not intersect it. In this case the distance is given by the width between the two ends of the compasses. 11 beyond the line, as •o z (fig. 5), one point of the compasses must be kept steady on x ■, and the other must be brought one-third of % v y nearer to v. The same is to be observed when the line is to be divided into 4, 5, or more equal parts, with this difference, that whatever remains may always be subdivided; as, for instance, when the ques¬ tion is of six parts, into six. And whenever such parts are many, they may first be divided into a smaller number of parts, and then each part again separately; as, for instance, when the question is of six parts, twice 3 or three times 2 is equal to six, therefore the given line may be first divided into two parts, and every part again into three; or first into three parts, and every part again into two. Or may be done thus: To divide a given line as the following A B, into any proposed number of equal parts, as, for instance, the line A B into five. 15 from r to s: the remainder t s is then divided into as many equal parts as the shorter line is to he placed on the longer, and one more: consequently here into four parts. Each of these four parts is the required distance, and at the same time the intermediate space. It is in this way that the proper place is assign¬ ed to doors or windows in a building. XI. To make two lines meet exactly like two others , as for instances, omitting the dotted are (fig. 9. pi. 1.) the lines z c and z b } like the lines vx and v w. Draw the line z c, if it be not already drawn, and with the same opening of the compasses des¬ cribe from the points where they are to meet, as herefrom v and s, two small arcs; set off the length of the arc between the aforesaid lines, viz. x w , from c to h , and draw a line from % to b 9 and it will meet the line % c, as required. 22 XIX. To draw through a given point opposite to a given line another line parallel to this line , as, for instance, the tine h k parallel to the line Im through the point h (fig. 16. pi. 2). Seek, by means of prop. V., the distance of the point li from the line Im; place one end of the compasses on this line l m very far from h y and describe a small arc opposite to this point. Afterwards put the common ruler against this arc and the aforesaid point h, and draw the in¬ tended line. XX. To take the distance of two parallel lines . Proceed* either according to prop. V., selecting at pleasure a point on one of the two lines, and describe from this point an arc which closely touches the other line. The opening of the com¬ passes is, in that case, the required distance. Or, put the ruler against one of the two lines, and draw (which is most readily done with the 24 may also be begun with either of the other given lines, instead of the line n. A figure is a space completely bounded by lines; an angle therefore, as for instance that at fig. 11, is not a figure. But any figure inclosed within three lines is called a triangle. XXII. To describe an equilateral Triangle, viz. one whose sides are all equal, as, for instance, that (fig. 18. plate 2.) with the given line tv. Draw the line w: r, as long as t v; and with an opening of the compasses equal to tv or w x, draw small arcs intersecting each other in m, (see plate 2. fig. 18). and from the point m where they inter¬ sect each other, draw lines to the points w and x. XXIII. To describe an Isosceles Triangle , viz. one of which two sides only are equal; as, for instance , the Triangle (fig. 19, plate 2,) with the given lines p and q. Draw the line % equal to the line q- } with the 36 line under b ; thus this line, which is equal to the given line, will be divided as required. The same process may take place whenever a line is to be divided into a certain number of equal parts without any addition. But with re¬ gard to this addition itself, it may be observed that one of the greater parts is always divided into as many equal parts as the number last men¬ tioned in the addition ; for instance, with three fifths into five; and that as many parts are al¬ ways to be added as mentioned by the number which is first uttered, for instance with three fifths, three. XXXIX. To make a Straight Line as long as a Curve Line. Divide the curve line with dots into small parts, and set off these parts upon the straight line in the same order in which they follow each other. The smaller the parts on the curve line, the 43 If the seat is to be a little narrower behind, the back must consequently be so, and the former in that case is not a quadrangle but a trapezium. The thickness of the feet in the upper parts is about one sixth of their height; but in the lower parts only half of a sixth of their height. The thickness of the seat is about the fifth of its length. Several parts of the back, in front and on the side below, are as thick as the upper parts of the feet; and the back on the side above is as thick as the lower parts of the feet. The upper cross piece of the back is as high as the seat is thick in front. Drawing . 1. Draw the lineg hi erect upon it three suc¬ cessive times the front line of the seat, and place on the points right angular lines, the two exterior ones about as long as the breadth of the seat 5 but the two middle ones a little more than three times as long as that breadth. 49 And, in order that the drawer may not sink be¬ hind on being put into the table, fasten at the upper part of the plinth, a small slip of paper on which the drawer may rest. A very small pea, or a grain of pimento, put in front, in the middle, will serve as a knob for pulling. ; jjj. Observations, If coloured paper be employed, brown of the colour of wood is the most suitable. The table board may be of a different colour; you may, for instance, give it the appearance of being covered with oil cloth. Should the making of a separate drawer give too much trouble, a slip of paper, like that at t, upon the upper cross ledge, may supply its place. A Chest of Drawers. Plate 3. With a flat paper figure like that of the Table, 53 out more correctly, as well as the door and win¬ dows. > On joinings the edge, over x, must come exactly upon that over w, and the sentry-box must be fixed upon the ground. Then the roof is placed upon it; and the whole is joined in such a man¬ ner that none of the margins be visible on the outside. The roof may be painted red, blue, black, or brown, or covered with paper of any of these colours: but it must be done before it is placed upon the box. ' Observations. The size of this sentry-box corresponds with that of children’s pewter or leaden soldiers. It may be less. The bottom is in the shape of a quadrangle or rectangle, and may be contrived with very strong paper or thin pasteboard. The roof may be represented as made of boards, by means of fine wood shavings cut into small 63 Drawing. 1. Take twice upon the previously drawn line l m, as here, the lower length and breadth; erect on these points perpendicular lines, and by de¬ termining the height from l and m , and drawing a line, finish the four lower rectangles. 2. Draw a line parallel to the common or ge¬ neral upper line of these rectangles at a distance equal to what the upper part wants of the length and breadth of the lower one; take, as here at n p , the breadth of the upper part exactly in the middle of the lower one, and then draw the rect¬ angles for the upper part in the same way as for the lower one. 3. Draw over the rectangle close to np an¬ other rectangle equally broad, but as high as the stove is long at the top, as well as the two rectangles for the door-shaped openings. After¬ wards determine also the mouth of the stove, the round hole for the flue, and the margins for join¬ ing. 68 Drawing. 1. Draw the line v w as long as each step, erect perpendicular lines on the points v w ; and if you want four steps, set off from v and w, four times the slope of a step. This slope is deter¬ mined as at ,r; viz. two lines are drawn right- angularly one upon the other ; then set off from x to z the height of the step, and from * to h its breadth, and afterwards draw the line z b as its slope. 2. Join the points just obtained upon the lines over v and w with cross lines, also dotted here, and then draw by means of parallel lines the breadth and thickness of the side pieces, whose breadth is found by determining, according to Prop. V. of the Introductory Exercises, how far the point x is distant from the line . 3. Determine likewise the slope of the side- pieces at their extremities, as at w. The point d in the prolongation of the line over w is here equidistant from c and w. 70 termine the distance and breadth of the steps four successive times, as under d ; then fold this flat paper figure in a zigzag, and join it so as to form a whole, with the figure over v w. Observations. On taking twice from x the breadth of a step upon the line close to b , and describing an arc as here, you obtain also the slope for two steps, by drawing this sloping line itself. Suppose therefore you had delineated a flight of steps as under d , and wished to determine the height of the rectangle over v w , the height of two steps would be that of the sloping line, and that of four steps double its height, and so on in proportion. A Small House with Gable Roof. Plate 6. With the flat paper figures over/ g and over h. Plate 16. Proportions. Only two-thirds as broad as long. The height 73 with q r trom q , and with m n from r, small arcs intersecting each other at t, and joining these points with lines, you obtain the equilateral triangle q r t. The opposite side must be drawn in the same manner, and proper attention must be paid to the margins for joining. 3. Draw, as under v, the flat paper figure for the chimney, by first taking twice upon one line the breadth and length, and erecting lines at right angles, and afterwards raise the line under v to its proper height. The segments are de¬ termined by describing equilateral triangles, the gable side of the roof being such a triangle. Construction. After having cut in the rough and folded the flat paper figure of the building, so that the point f coincides with the point g, fix the roof, then the chimney upon it, and afterwards the bottom. The roof may be painted to represent either tiles or slates. 97 A Windmill. Plate 11. The flat paper figures for the body of the mill are the same with those of the house with the gable roof. The breadth sideways is a little more than that in front; but the height up to the roof is twice the breadth. The trestle or base on which the mill stands is half as long as the height of the mill. The sails are so long that they almost graze the ground. On the side opposite to the sails is a door, with steps leading to it, which steps may be made with a flat paper figure like that over p, Plate 20. The two side pieces and the balustrade may be cut out separately. These steps are fixed to the long beam by which the mill turns on the tres¬ tle, as may be seen at q, Plate 20. The skeleton of the sails is partly given below to the* left of the 9th Plate; but the rods or bars may also go through the middle of E 102 APPENDIX. The flat paper figures of the five regular geo¬ metrical bodies. Plate 21. The flat paper figure I. consists of three ad¬ joining equilateral Triangles, and makes a Tetrae- dron . The figure II. consists of eight adjoining equi¬ lateral Triangles, and makes an Octaedron. The ^figure III. consists of twenty adjoining equilateral Triangles, and makes an Icosaedron. The figure IV. consists of twelve regular Pen¬ tagons, and makes a Dodecaedron. The flat paper figure close to b on the 12th Plate, consists of six adjoining equal quadrangles, and makes a Hexaedron , Die or Cube, THE END. 2 /. PREFACE. On submitting to an enlightened Public a new, elegant, and instructive amusement for Children, we have first to account for its name. We are aware that the term Plastics is generally confined to the modelling of sculptors and statuaries in gypsum, clay, wax, &c. But as the art of making cork models of architectural monuments on a small scale, has obtained on the Continent the appellation of Phelioplastics , from the Greek word (psKXog , cork; we think ourselves warranted by this analogy in denominating the art of modelling in paper Papyto- plastics. 4 glue or paste^ but one of them so sparingly as only to become moist; they then should quickly be laid one upon the other; covered with a dry sheet of paper; smoothed in an uniform direction on a hard; even surface; and pressed between two boards or in an old book until they are perfectly dry. Lastly, objects ought not to be represented on too large or on too small a scale. In the former case, or when the objects are complicated and composed of too many parts, the surface of the paper seldom proves sufficiently stretched and even, and both the beauty and durability of the model are impaired. And when the scale is too small, it frequently occasions a waste of time and labour, and too diminutive models rarely succeed after all. Neither should such objects be attempted which cannot well be represented in paper. A certain facility in modelling easy objects must have been previously acquired, before one may 5 venture upon more difficult ones. The models mentioned in the following Directions should not be altered, nor should new ones be undertaken, but after they have been repeatedly and success¬ fully executed. The transition from what is easy to what is more difficult, is as indispensable in this, as in any other art or science. CHAPTER II. INTRODUCTORY EXERCISES IN DRAWING WITH COMPASSES AND A RULER. The first and second plate refer to these exercises. The points* lines* and surfaces, are designated by letters. I. To draw a right or straight line. Have a very sharp pointed black lead pencil, and keep uniformly close to the ruler in drawing the line, taking care to have it very fine and al¬ most imperceptible, for a line is that which has length without breadth. XI. To take the length of a line with the compasses. The compasses must be opened so wide that the ends of the two legs may exactly touch the two extremities, or the beginning and termina- 21 to the required distance, describe the arcs n m, and placing the ruler upon the upper extremities of these arcs, draw a line (without cutting them) to touch the two arcs. Equidistant or parallel lines may be seen, for instance, in the side walls of houses, in doors, windows, and other objects: XVIII. Another way of drawing one line parallel to another; as, for instance, the line c d to the linefg (fig. 15, plate 2). Draw on the given line,/g, if possible at a good distance, two lines at right angles and of the same length, and through the extremities of those per¬ pendiculars draw another straight line. This will be parallel to the given line. When several lines are required to stand per¬ pendicular upon another, and consequently pa¬ rallel to one another, the shortest way is to put the triangular ruler against the common ruler* -and to keep it firm against it. 25 length of the line p describe from both extremi¬ ties of the line z two small arcs intersecting each other in m, and draw lines from their common intersection to the extremities of the line z. XXIV. To describe a Scalene Triangle, viz. one of which all the three sides are unequal; as, for in¬ stance, the Triangle (fig. 17, plate 2,) with the given lines , n p q. The process is the same as in prop. XXI. 4 * XXV. To describe a Right-angled Triangle, viz . one which has one right angle . By prop. XII. draw two lines to meet at right angles; and when there are two given lines, make them of equal length with the other two, from the point where the former meet. Afterwards draw the inclined line. 28 where they do not meet, two arcs intersecting each other in m; and then draw the other two remaining lines. XXIX. To draw a Rhombus , viz. a figure whose sides are all equal, but its angles not right; as> for instance , fig. 21, plate 2. Let the line k be the given line. Make two lines meet at a given or any angle, and proceed as with the preceding proposition. XXX. To draw a Rectangle or Oblong, viz. a Quadrilateral figure whose opposite sides are equal, and angles right angles; as, for instance, fig. 22, plate 2. Let f and g be the given lines. Draw two lines to meet at right angles, make them of equal length with the two given ones from the point where they meet, and proceed as in prop. XXVII. 33 cular arc the point, from which the arc itself has been described, is to be found, viz. by taking any three points, in the circumference, at pleasure. XXXVI. To draw a regular Polygon upon a given Line: as,for instance , the Pentagon (fig. 26, plate 2). Let s f be the given line. Draw upon it, as at t , a line at right angles, making t v equal to 5 t, and describe with its length the circular arc s v. Then divide the length of this arc s v, into as many equal parts as the figure is to have an¬ gles, here therefore into 5 ; take whatever poly¬ gon it may be, the width, as here, from v to the point where there are still four parts remaining, and set them off from v to w , further upon the arc. Then seek in s t and w for a point on which to rest the end of the compasses, in order to de¬ scribe the curve line which passes through the points s, t , w, and set oif s t four times more upon c 35 XXXVIII. To divide a Line into equal parts, so that there shall be left a certain length; as, for instance, the Line h (fig. 29, plate 2,) into two equal parts, and two thirds of such a second part. Draw any line at pleasure, somewhat longer than that which is to be divided •, open the com¬ passes so wide that, as there are to be two equal parts, this width may be set off twice upon the line, as is actually done here at b. Afterwards, to get at the two thirds, divide one of the afore¬ said two parts into 3 equal parts, and add two of them to the former two parts. Then, with the whole length, as has been done here, describe an equilateral triangle, take with the compasses the terminating points of the given line, and set off the length of this line, as here from c to d and from c to f. Lastly, draw the line, as her edf, and intersect it by placing the ruler against the point c and against the dividing points of the c 2 37 more accurate will be the process : however* they must not be made over small. XL. To describe a Curve Line, of the same length as another Curve Line . The process is the same as in the preceding- proposition. 41 2. Draw from the points b and c two straight lines at right angles ; make them from b and c as long as one of the sides of the Cube ; and join them by a line, so that you obtain, as here, three quadrangles. 3. Afterwards draw, which now will be very easy, the three remaining quadrangles, and leave in the proper places the edges or margins requi¬ site for joining. Construction. Cut out the flat paper figure. If the paper be large, do it first by guess, but afterwards very accurately. Both are easy. You need only ob¬ serve the lines which here are drawn through and not dotted on purpose. Care must be had not to miss any of the principal surfaces nor any of the edges left for joining. The latter may even be left tolerably large. Afterwards proceed to the folding. This too is not difficult. You are 42 guided by the dotted lines by which it is clearly pointed out. You then clip the edges for joining, if needful, a little, and examine whether all the parts will form a correct whole. The points d , c, and/, for instance, must meet exactly When this is the case, the edges are done over with glue or gum-water, and joined in such a manner as not to be perceptible on the outside. A Chair. Plate 3. With the flat paper figure over g h. Plate 12, Proportions, Without the back, the height, breadth, and width, must be equal. The back itself as broad as high. But the seat is somewhat narrower than its length. On considering the flat paper figure attentively, ydu find over g h three qua¬ drangles for the feet, a rectangle over the mid¬ dle one for the seat, and over this seat another quadrangle for the back. 59 house; after having cut and folded it in the rough, lit the edges b and c upon each other, and then fix the four walls of the building on its bottom. The margins are all folded inwards: but the upper ones are only a little bent and kept rather erect, to facilitate the roofing. The roof may be painted, or covered crossways, with wood shavings, like the sentry-box. Afterwards proceed to the pole and the pedes¬ tal. To make the former, roll the afore-men¬ tioned slip of paper to its proper thickness, beginning at the sharp-pointed end, as here h to the left, opposite, and fix it; if you wish to paint it, the most suitable colour is brown. • When the base or pedestal is ready, fix the thicker part of the pole on the middle of the bot¬ tom, and on the pole itself the sliding ledges; and afterwards insert the pole through the round hole at the bottom into the pigeon-house. 66 as high as the middle one, and recedes about a third of its height. The upper part is rather sloping, and as high as the lower one. Drawing. Excepting the hearth-plate and the two sup¬ porters of the German stove, the drawing is the same as that of the stove, with this difference only, that what is the lower part of the stove is here still lower, and in the middle one a circle must be described for the dial. The upper part of this watch-stand must be drawn separately. Describe a circular or curve line like that round the point r, Plate 16. Set off upon it the bre&dth of the upper part four successive times, and from these points draw lines towards the centre. Afterwards draw the lines, $ t , &c. and others parallel to them, at the proper distance. Lastly draw, as here, the quadrangle, and mind the mar¬ gins for joining. 72 2. Draw the two equilateral triangles; sup¬ plying the lower line in your mind, and then the door and windows, either as here or according to any different plan of your own; and observe the margins for joining. 3. Determine the two conjoint rectangles for the roof, as between k and h , neglecting the sloping lines. The length of these rectangles is but little more than the length of the building, and the height of each a little more than one of the sloping lines of the gable. Second Case : When the gables are broken at the top. 1. Draw all as 1 and 2 in the former case, and afterwards shorten every gable side as below l ; m n is here drawn so that l m is equal to In. 2. Determine the bottom and roof; the latter as between h and k : it is delineated as at 3 in the first case. Then take from p to q the shortening of the top, from p to r and s the length l m or l w, and draw the lines q r and q s. On describing 76 to it. The windows as high as bread, and rather small. Drawing and Construction. The same as the cottage. The barn-door may be contrived like the door of the gable-roofed house. A Paling, or a Palisade. Plate 7 - The flat paper figure is the same as under w, Plate 16; but at the top there is a separate slip of paper crossways, as in the seventh Plate. Such a paling or palisade may also be contrived as the drawing to the left on this seventh Plate. A Small House with a Sloping Roof. Plate 6. With the flat paper figures over x z , Plate 16; and over b c , Plate 17- 80 the ground on which it stands may be covered with a little moss. A Town House. Like the house with the gable or sloping roof, only higher ; with two or three rows of windows one over the other, and a window over the door. A House with a Gable Elevation in front. Plate 7- A small part of the flat paper figure is between g h , Plate 18. Proportions . Three times as long as broad ; only one-third as high as broad. The gable elevation in front is about half as long as the whole building, and as high as a fourth of this half. The roof itself is as high as the building up to the roof. 86 exact length of this paper figure should be twelve times a fourth of the thickness of the tovrer. The aforementioned ledge, which goes round the top under the roof, and is separately joined to it, is a little longer than its substratum itself, or the circumference of the wall on which it h fixed. It is best determined by compressing the rectangle requisite for the tower. Other windows and doors besides those marked here must be supplied, and the two doors given here must be placed neither higher nor lover than the balcony and the draw-bridge will albw. Draw the roof for the tower as under wz, Plate 19. Take with the compasses the length of one of the sloping lines of the roof up to where it pro¬ jects over the lower part of the tower, and describe a circular arc; afterwards take upon it twelve times a fourth of the lower width of the roof, and from the two extreme points draw lines towards the centre, or here the point m. Mark also the margin for joining. 87 As for the small turrets, draw the flat paper figure for the lower part as at n , Plate 19; anti for the roof like that of the pigeon-house, taking care, however, to alter the height. Draw the flat paper figure for the balcony as at p, for the drawbridge as at q , and for each pil¬ lar as at r, Plate 19. The wall consists in its principal parts of a rectangle of about a fifth of the height of the tower without the roof, and of at least ten times its length. Construction. After having joined all the parts, dnd fixed the small turrets, the balcony, and the pillars in their proper places, fasten below at the entrance a narrow rectangular slip of paper, to represent that part of the bridge which may be drawn up. The wall is best made of thick pasteboard co¬ vered with paper, which is neatly clipped and trimmed when dry. The whole building may be 88 placed on pasteboard, and painted like an old ruin; but the roofs as if they were slated, or still better, green, as if they had been covered with copper. Doors and windows may be painted instead of being cut out; some moss may be laid in different parts, and vanes fastened to the tops of the turrets, or flags kept flying as here, to ren¬ der the whole more conformable to reality. A Boat. With the flat paper figure close to s t , Plate 19 Proportions. The fiat bottom is a rectangle six times as long as high or broad. Drawing. 1. Draw the rectangle over s t six times a? long as high or broad; prolong the narrow late- 101 A Wheelbarrow. Plate XXII. Fig 3. This, after all the preceding objects have been properly constructed, will offer no difficulties. Observe only the proportions as marked in this 22d Plate. The bottom a is twice as long as broad. b b are the two sides, rather narrower towards the handles. c d the two extremities. e e the handles. f f the projecting pieces to which the axle of the wheel is joined : they are similar to the han¬ dles, but rather wider and shorter. g g the points for placing the legs, which are of the same length with f f. The wheel may be either with or without spokes. It may be made of a piece of card with a narrow slip of paper glued round it; and a small piece of wood may serve for the axle. % DIRECTIONS FOR MODELLING WITH CUT PAPER FIGURES. CHAPTER I. PRELIMINARY REQUISITES AND DIRECTIONS. To make neat representations in paper of any given object on a small scale, is an occupation as agreeable as useful. It consists chiefly in drawing, cutting, folding, joining and painting. 1. The drawing regulates the cutting and fold¬ ing. It is most easily performed by means of a pair of compasses, a common ruler, and a ruler either of brass or wood. Fig. 10, Plate I. in the See also the Second Chapter on the introductory Exercises in Drawing. 7 ting points of a line. The place where a line commences or ends* or where two lines pass through* or intersect each other, is a point. III. To take the length of a long line in order to make another exactly similar, as for instance of a line longer than a common size sheet of paper . Divide the given line, by dots, into several parts, at pleasure ; then set off each part succes¬ sively with the compasses. IV. To mark the exact division of a given line on another line. Whenever the given line is not very long c d f as for instance, the line b, -;-;- 7 - g 9 this is most accurately done by measuring not the intermediate successive lengths, but by taking the spaces, be, bd, bf, or gf gd, gc , beginning al ¬ ways with b or g. But when the line is of considerable length, a 10 To divide the lin efg into two equal parts- cr O 1> From the points/ and g, as centres, with any opening of the compasses greater than half fg t describe arcs cutting each other in a and b. 2. Draw the line ab , and the point e, where it cuts/g, will be the middle of the line required* VII. To divide a line into more than two equal parts , as, for instance, the line q r (fig. 4, pi. I.) or the line v zo (fig. 5, pi. I.) into three. Take, by guess , as near a third part of the line as possible, then after having set off three equal parts on the line r q; should there be a remainder, as q s (Fig. 4) , one point of the compasses must be kept steady on t, and one-third of q s must be taken by the other. But if, by turning over the compasses three times, the point should fall 17 other line is to be placed, as here the line df; and bring upon this ruler one of the short sides of the triangular ruler, then holding both rulers firm one against the other, draw the required line along the other side of the triangular ruler. And to try this ruler, draw in the aforesaid manner a line at right angles to another, and holding the common ruler firmly, turn the trian¬ gular ruler upon the right angular line just drawn, and move it on the common ruler exactly against this line. If the edge of the ruler and the line meet again accurately, the triangular ruler is correct. [III. To draw from a given point a line at right angles to another line, without the triangular ruler, as, for instance, from the point k (fig. 11. pi. 1), a line perpendicular to Jc l. Describe from the points of intersection k and and draw two other arcs intersecting each 18 other at m. Then placing the ruler against the points h and m, draw a line from the point h to the line k /, and it will he at right angles to k l. When small arcs like those (fig. 11) are described, both above and under a line from the two extreme points or of the same; and when the said line is intersected by placing the ruler on the two points where the arcs meet, that line will be divided exactly into two equal parts. XIY. To draw, but without the triangular Tukr, another line at right angles, on a given point of a line , as, for instance, the line r n on the point n of the line p q (fig. 12. pi. 1). Place one end of the compasses on the giver point n, and describe with the other small arcf intersecting the line, as here at p and q. De scribe again small arcs from these points p anl q , intersecting each other above the line, as hers 31 must be divided into Triangles, such as those marked with dots (fig. 25), and these Triangles must be copied in regular succession. XXXIV. To draw a regular Polygon, viz. a Figure of more than four sides, which, as well as the angles, are all equal; as, for instance, the Pentagon (fig. 26, plate 2). The easiest way, when no importance is at¬ tached to the sides being of more or less consider¬ able length, is to describe a circle, to divide this circle into as many equal parts as there are sides required, or as the Polygon is to have angles, and afterwards to join these points of division by straight lines. A circular line, which is also called a periphery or circumference, is such only when in whatever part of this line we suppose a point, that point is every where at the same distance from a point in its middle. This latter point is called the centre. 40 deterred ; try again with greater attention, seek for the cause of your failure, and avoid the mis¬ take into which you had been betrayed. Re¬ peated attempts are sure to be crowned with success. A Cube or Die. Plate 3. With the flat paper figure b c. Plate 12. Proportions. The Cube or Die is enclosed by six equal squares, consequently it is as high as it is long or broad. Drawing. 1. Draw the line b c; mark off from b to c three times one of the sides of the Cube; draw on the two middle points two lines at right angles and produce them downwards. 47 The breadth of the upper parts of the feet is about an eighth of their height up to the upper cross ledge; lower down they are less thick. The drawer has half the height of the cross-ledge, and its length is double its breadth. The table board projects on all the four sides half the height of the upper cross ledge. ♦ j Drawing. 1. Draw the line n p ; set off upon it from n, first the length of the pedestal, then its breadth, then again the length, and once more the breadth, and erect at these points perpendicular lines as long, or even a little longer, as the pedestal is to be high. 2. Make the line n q andp r of the height of the pedestal; draw the line q r , and under it, parallel to it at the proper distance, another for the upper cross-ledge. Afterwards draw the feet, as before for those of the chair. 52 Drawing. ]. Set off upon the previously drawn line w x four successive times the length or breadth, and draw lines from these points, at right angles, to the line w x. If the height be determined from w and x, and a line drawn parallel to w x , you obtain four similar rectangles. 2. Draw over two of these rectangles equila¬ teral triangles, and rub out the lower lines. Af¬ terwards determine, as here, the door and the small windows as well as the margins for joining. 3. Appropriate, as under x, the equally divided rectangle to the roof. This rectangle ought to be somewhat longer than twice a side of the tri¬ angles, and a little broader than the sentry-box itself. Construction. When the flat paper figure is cut out in the rough, fold it properly, and afterwards cut it 54 pieces of the breadth of a common goose quill, glued crossways on each side, and projecting a little one over the other. When sufficiently dry, they may be clipped even with scissars; which is far more expeditious than to cut them separately* of equal length. A Thatched House. With a flat paper figure similar to that of the sentry-box. Plate 13. Proportions. The sides double the length but only half the height of the breadth of the thatched house. The remainder is evident from the Drawing , which is exactly like that of the flat paper figure of the sentry-box, only altering the length, breadth, and height, making the door somewhat 57 the building is high without the roof, and about a fourth as broad. Drawing\ © 1. The flat paper figure of the building. First draw the line b c , and set off on it the breadth of the house four sticcessive times ; then draw, as here, five adjoining quadrangles, the undermost of which forms the bottom. After this, determine the door and perches as well as the round hole in the bottom for the passage of the pole ; the spot for this hole is found by drawing from one angle to the other in the direction of the centre two lines that shall intersect each other. Attend likewise to the margins for joining. 2. The flat paper figure for the base. Having given to the line d f its proper length, draw against and with it a quadrangle, and determine its centre by means of two diagonals. Then set off on the middle of each side of the quadrangle the breadth of the sliding ledges, and placing the 71 up to the roof half the length of the building. The gable side of the roof is an equilateral tri¬ angle. The height of the door is double its breadth. The windows in their exterior circumference are quadrangles, a little less in height than the door is in breadth. The chimney is half the breadth of the door, and the height and breadth of a win dow. The roof and the bottom of the house project a little above the building. Drawing. First Case: When the gables at the top are not broken. 1. Draw the line/g and set ofi* upon it suc¬ cessively the length, the breadth, then again the length and again the breadth of the building; erect on these points lines at right angles, and determine its two long lateral flanks after having first taken from / and g the height of the build¬ ing up to the roof. 77 Proportions. Two-thirds as broad as long. The height up to the roof half the length of the building. The slope of the roof on the narrow side is an equila¬ teral triangle. The height of the door is double its breadth; every window is two-thirds as broad as high. Drawing . The flat paper figure xz is only half of the lower part of the house; the other half must be supplied in the mind. The drawing itself is not difficult. First, take twice the length and breadth upon the line x z, and its prolongation, and then draw each of the four large rectangles. To make the roof. 1. Draw the line b c, Plate 17, a little longer than the length of the building, that the lower end of the roof may project a little; and mark off i- Tn^rev'&'Madelev l.ithog.310 Strand Inp-eyKWi j ! \ # '• . Digitized by the Internet Archive in 2018 with funding from Getty Research Institute https://archive.org/details/papyroplasticsorOOblas VI PREFACE. This ingenious art is calculated to intro¬ duce children to the most common and prac¬ tical applications of geometry, in a way which occupies their hands, and thus en¬ forces their attention, without any particular effort of their thinking powers. By a law of our nature, our curiosity, in our earlier years, is preferably directed to palpable ob¬ jects. Abstraction is an exertion of the mind, which is irksome even to a great many grown up persons ; and children can hardly be induced to exercise it, because they can¬ not form an idea of the advantages resulting from that faculty. This love of reality is likewise the characteristic of the infancy of nations. The Greeks had clever statuaries long before they had able painters. The sculptor represents the object as it is, with all CCNTI NTS. Xlll Page A Round Hut ...-.. .. 96 A Windmill . 97 An Arm Chair. 98 A Small Basket .. 98 A Chiflfonniere . 99 A Sofa. 100 A Wheel Barrow. 101 APPENDIX.—The'five regular Geometrical Figures . 102 ABBREVIATIONS. Fig. for Figure. Prop, for Proposition. 9 VI. To divide a given line into two equal parts with the compasses, as, for instance , the line f g , or l m (fig. 2, or 3, plate I.) Set one point of the compasses in k as near the middle of the line as possible, then open the compasses to g, and keeping one point fixed in k, turn the other towards f. Then if there be any part of the line left, as fh (fig. 2), one point of the compasses is kept steady on k , and the other is carried by guess to the middle of f h. Should there now be too much, as the dis¬ tance l p , (fig. 3), one point of the compasses is kept steady on n , and the other is carried to about the middle of Ip nearer the other point of the compasses. If on examination the line is not yet divided ajito two equal parts, the same process must be repeated until the two parts are of equal length. Or it may be done thus: 12 rn 1. With one point of the compasses in A, and the other in B, describe the arc Bm, also with the same opening of the com¬ passes, and one point in B, describe the arc An; or with a parallel ruler, draw, .Be parallel to Ac. 2. From one end A, of the line, draw Ac, to any point, as c, in the arc Bm, then take the arc Be in the compasses, and setoff an equal arc on A n, i. e. A e , then draw the line B e. 3. In each of the lines Ac, Be, commencing at A and B; set off as many equal parts of any convenient length, as A B is to be divided into. 4. Join the points A, 5 ; 1,4; 2, 3; 3, 2; 4, 1; 5, B; and A B will then be divided into five ecyual parts as was required. VIII. To place the length of a given line exactly in the middle of another line , as, for instance, the line b c (fig. 6, pi. I.) on the line d f. Setoff the shorter line and the longer one from d to g, and divide the remainder gf into two equal 13 parts. Each of these parts is the distance at which the extremities of the shorter line are to be from the extremities of the longer, if the shorter line is to be precisely on the middle of the long one. When therefore the distance is taken from the beginning, as d a , and terminating point, as /e, towards the centre of the longer line, the middle space between (viz. a e) is the length of the shorter line. Supposing the line to be placed in the middle be the width of a door, and the longer one be the length of a small building, the door by this pro¬ cess would be placed exactly in the middle of the building. IX. To set off a line more than once upon another longer one, so that the intervals he equal; as, for instance, the line h k (fig. J, pi. I.) three times on the line l m. The length of the shorter line must be set off upon the longer, either from the beginning or 19 at r, and then draw the required line by holding the common ruler against the points r and n . XV. To draw, without the triangular ruler, an¬ other line at right angles at the end of a given line, as, for instance, the line h upon the line f (fig. 20, plate 2). The point f may be taken at pleasure; but de¬ scribe, with the same opening of the compasses, from this point/and the terminating point of the tine, two arcs intersecting each other as here at g. Vfterwards draw a line through the points f and g’, then make g h equal to g f, and draw a line from the point h to the aforesaid terminating joint. VI. To divide an angle into several equal parts, as, for instance, the angle t s v (fig. 13. plate 1.) ^nur equal parts . tribe with the compasses, from the angular 23 triangular ruler) a line at right angles upon it, so as to intersect the other of the two given lines. The length of this right angular line drawn be¬ tween the two parallel* lines is, in this case, the required distance. This process determines the length or breadth of objects inclosed within parallel lines, as, for instance, of doors, windows, and such like. With regard to diminutive objects, only the aforesaid arc or the right angular line is to be attended to. XXI. To make three given lines meet at their ex¬ tremities, or to form a figure with them ; as, for instance, the lines n,p , q (fig. 17, plate 2). Draw r s y a line as long as one of the three given lines, for ex. n: then from both extremities of the line r s describe, with the separate lengths of the other two, arcs intersecting each other, as at m; and draw two lines from the extremities r and Sy to the point of intersection. The figure 29 XXXI. To draw a Rhomboid, viz. a Parallelogram whose opposite sides are equal and the angles not right; as,for instance, fig. 23, plate 2. Let f and g, again, be the given lines; and ex¬ cepting the right angle, instead of which another angle must be formed, the process is the same as with the rectangle in prop. XXX. or prop. XXVII. A quadrangle, a rhombus, a rectangle, and a rhomboid, have also the common denomination o i Parallelograms ; and the line which joins the two opposite angles of a four-sided figure is called a Diagonal. XXXil. To draw a Trapezium, viz. a Quadri¬ lateral figure of unequal sides, two of which how¬ ever are parallel; as, for instance , fig. 24, plate 2. Let f and g (fig. 22.) be the given lines. Place the shorter line exactly on the middle of the 32 The distance of the centre from the circumfer¬ ence is called the Radius; the distance of any point in the circumference to another point in the same, in the direction through the centre, is ealled a Diameter ; but if the direction be not to the centre, it is called a Subtense or Chord. XXXV. To draw a circular Arc through three given Points which are not in a straight Line ; as , for instance , through the Points l, m, n (fig. 2 7 , plate 2). Describe from l and m, with the same opening of the compasses, small arcs intersecting each other, as here at k and p , and likewise from the points m and n similar arcs intersecting each other, as at q and r. Afterwards draw through these points of intersection k , p and q , r two lines, and the point where these lines intersect each other is the centre of the circular arc. The same process takes place when in a cir- 38 CHAPTER III. MODELLING WITH CUT PAPER FIGURES* Preliminary Observations . 1. The proportions here given refer only to the objects represented on the plates. They are of indispensable necessity,, and ought to be care¬ fully attended to until a sufficient knowledge to determine them, has been acquired by the young artist. 2. Whenever height, length, and breadth, are stated in general, these dimensions are to be un¬ derstood of the main parts of the given object. When the dimensions of the smaller parts are meant, those parts are expressly mentioned. 3. Care must be had to have a distinct notion 44 2. Take the height of the seat from g to k, and from h to l , and drawing the line l k, determine the three adjoining quadrangles. Afterwards draw, which will now be very easy, the middle rectangle and the upper quadrangle. The for¬ mer is lower than the quadrangle by the thick¬ ness of the lower side of the back. 3. Draw under the line Ik a line parallel to it at a distance equal to the thickness of the seat, and extend upon it the thickness of the upper parts of the feet to the right and left of the lines right angularly drawn upon g h . Then in the same manner mark off upon the line g h the lower thickness of the feet, and draw the in¬ clined lines by which the feet are distinguished. 4. Having attended to the given proportions and first drawn parallel lines, delineate the open work of the back, and, as here, its lateral breadth. Lastly, mind the margins for joining. 46 If the upper cross piece of the back is to pro¬ ject a little sideways as on the chair in the third Plate^ or as it is to the right of d, draw and cut out separately a narrow rectangle like that at t, and fix it properly. It may be clipped after it has been joined. A Table. Plate 3. With the flat paper figure over n p. Plate 12. Proportions . Two-thirds as broad as long; that is to say 3 if you allow two parts to the breadth; the length must have three. The height is a little more than the breadth. If this height is to be proportioned to the chair, half of the height of the latter may be added. The upper cross ledge of the plinth has nearly a fourth of the height of the plinth itself. The lower ledge is half as much raised from the bottom. 58 ruler on the two opposite points, draw lines, and at the same distance two more for the sides of the sliding ledges. Then make these of the requisite length, and observe here and there, as atg, the inclined segments and the margin for fixing the sliding ledge on the pole. 3. The flat paper figure for the pole. This consists merely of a slip of paper about as long as the pole is to be high, and about a fourth of the breadth of the pigeon-house in its broadest part. It is represented on a small scale at h , plate XIV. 4. The flat paper figure for the roof. See under Jc , Plate 15. Only draw 7 , as here, four adjoining equilateral triangles. But each side of these triangles must be somewhat larger than the breadth of the pigeon-house, else the roof w r ould not project sufficiently; and the margin for joining must not be omitted. Construction . Begin with the flat paper figure of the pigeon- 60 Observations. The roof is best painted; the ground itself on which the pigeon-house stands may be painted grey, and covered here and there with moss, par¬ ticularly where the sliding ledges may happen not to fit exactly. Instead of making the pole of paper, you may take a young straight twig properly dried and co¬ vered with bark. A small pearl of wax or a ju¬ niper-berry may serve as a knob on the roof. An Ink-stand. Plate 5. Chiefly with the fiat paper figures of the cube. Two dice, like the one on the third Plate, give one the ink glass, the other the sand-box. De¬ scribe therefore on the fiat paper figure of each,, in the centre of the surface which is to be upper¬ most, a circle, and this cut out will be the hole 94 A Church. Plate 10. With flat paper figures like those of the house with a sloping roof, and of the upper part of the pigeon-house. Proportions . The length almost double that of the breadth ; up to the roof as high as broad or rather a little higher. The roof of the church and that of the tower are both of that height. Without the roof the tower has not quite that height. The large windows are three times as high as broad, but the window over the door is only a little higher than broad. The door is but half as broad as high. The window in the tower is a quadrangle. Drawing. Like the house with the sloping roof, only with different proportions. Draw the lower part of 90 A Round Hut. Plate 10. Drawing. The bottom or ground is a circle described with an opening of the compasses equal to the height of the posts or pillars up to the roof, of which the flat paper figure is to be drawn like that under m , Plate 19, but so that the arc here be somewhat longer than the circular line, for the bottom to secure the proper projection of Pne roof. The posts or supporters, six or eight in num¬ ber, must be drawn as at p or q 9 Plate 18. Construction. When the parts have all been cut and folded, the posts are fixed at equal distances from each other on the circular bottom, and the hut is roofed in. The roof may either be painted or actually covered with thatch, and a little moss may be strewed here and there upon the roof and posts. ' PAPYRO-PLASTICS, OR THE ART OF MODELLING IN PAPER BEING AN Snstructitoe Amusement FOR YOUNG PERSONS OF BOTH SEXES. FROM THE GERMAN, BY D. BOILEAU. SECOND EDITION, GREATLY ENLARGED AND IMPROVED. WITH TWENTY-TWO PLATES. LONDON: PRINTED FOR BOOSEY AND SONS, BROAD-STREET, EXCHANGE. 1825 , TABLfi of contents. CHAPTER I. Page Preliminary Requisites and Directions .. 1 CHAPTER II. Introductory Exercises in drawing with Compasses and a Ruler. . . 6 CHAPTER III. Modelling with Cut Paper Figures. Preliminary Observations ..... 38 A Die or Cube ...... 40 A Chair .. 42 A Table. 46 A Chest of Drawers. 49 27 line/. Afterwards with the length of the other two lines describe, from the terminating points of the lines b and c which do not meet, two arcs, as here at d , and then draw two lines from the point where the two arcs intersect each other to meet the extremities of the lines b and c. All quadrangular figures vary according^as the fines are varied, and according as the angles are greater or less. XXVIII. To draw a Quadrilateral, viz. a Square whose sides are all equal and its angles all right; as, for instance , fig. 20, plate 2. Let n , fig. 17, be the given line. Draw the line / equal to the line n ; and proceed as in prop. XV. or using the triangular ruler, draw a line at right angles, and make this also equal in length to the line n , from the point where it meets the line/. Afterwards with the line f or n describe, from the terminating points of the lines f and h , 48 3. Determine by taking correctly n and jo the lower cross-ledge, and observe the margins for joining. 4. Draw the rectangle for the table board with small margins at the four sides, either for joining or to represent the thickness of the table board. 5. Draw as at s and t , (see plate XII), the pieces requisite for the drawqj*. The part t is fixed to it in front. Construction. After having made a cube or a chair, it is easy to cut and fold the flat paper figures of a table. The feet may be cut out after the folding. If the edges correspond exactly, join first the parts of the pedestal. The point q must here correspond with the point r. Afterwards fasten the pedestal to the board, so that the latter may project. 50 only that the feet are very short, and that there are several drawers. Proportions. Two-thirds as broad as long, and nearly as high as broad. The top projects but little. The height of the drawers is according as there are two, three, or four, of them. The height of the feet is about a seventh of the height of the chest of drawers. Drawing. After having drawn the four rectangles, as if it were to be a table, and taken one of them for the sliding in of the drawers, proceed as on the left, below plate 13, over v. 1. The distance of the drawers, or rather of the openings for their sliding in, is determined ac¬ cording to the directions in Prop. IX. of the In¬ troductory exercises. 82 A Court or Garden Gate. Plate J. In the way it is represented here, it is that of a palisade or paling. It is therefore drawn like a palisade, and may be painted; or if cut out, a slip of paper on which the folding door is painted separately, may be fixed in the opening, or this opening may be left as if the gate were open. A Bridge. Plate 7* With the flat paper figure at the top, Plate 18. Proportions. Three times as long as broad. Each arch s described with a radius equal to the length of tie bridge. The height of the balustrade is a thid of the stated breadth. Drawing. After the rectangle under m n has been drzwn 83 of the length and breadth of the bridge, take with the compasses the length m n, and describe from m and rt, two small arcs which intersect each other, as here at p. Place one point of the compasses on p 9 and de¬ scribe with the other not only the arc m n 9 but also the arcs parallel to this, which serve to form the balustrade. The same is done with the similar lower arcs, and the two balustrades are then drawn more complete. Describe also the two innermost arcs with a radius as long as the straight line between the terminating points of each of these arcs. The upper arch consists of a rectangle, which tiust be bent, and which is as broad as the bridge, tut as long as the arc m n . Afterwards deter- nine, according to the last but one of the intro- dtctory exercises, the length of this rectangle, and mark at each of its sides the margins for johing. ' \ A 84 Construction. When joined, each part, like that over m w, will stand straight upon the rectangle under m n , and the upper part must he fixed in such a man¬ ner that no margin may be seen. Such a bridge looks very neat white; but it may be painted gray, and the balustrade brown. The upper part of the bridge, or rather the road over it, may be represented as paved or covered with gravel. The paper altogether should be ven strong and stiff. An Ancient Tower. Plate 8. With the flat paper figures which are partlym the middle and partly below on Plate 19. Proportions. The tower, (which, like its principal rooj is 89 ral lines on both sides, and resting one point of the compasses on each of these prolongations, de¬ scribe, with half the length of the rectangle, arcs which meet, as here at v. 2. Make the length s w equal to the length of the arc s r, and do the same with the other three similar lengths ; determine also, upon the afore¬ said prolonged lines, from the point where they are met by the long lateral lines of the rectangle above s t , the height of the two sides of the boat ? here two-thirds of the breadth of the rectangle over s t; then draw the remainder as here. 3. Mark the margins for joining, as those of s sr, and others. Construction . The two parts here above and under w must first be joined; the point w must coincide with the point x, and the same is to be observed with the opposite part of the flat paper figure. easily done. The seat in the sledge may be con¬ trived with a narrow slip of paper. Observations . If the rectangle over b d be drawn on the op¬ posite side like that under b d, the folding accord¬ ing to this line b d may be dispensed with. The outer seat may also be made separately, and fixed on the sledge. Indeed with a correct eye such a sledge may be cut out of a card without any drawing. A Ship. Plate 9. The main body is constructed nearly on the same principles as a boat, only the flat paper figure is in one part like that at g, Plate 20. There is also a piece like that under g requisite for the cabin; and for the covering in of this cabin, a rectangle which is a little longer than the cabin, and as broad as the length of its arc on the top. 95 the tower as above l m, Plate 20. The two segments, to fasten it on the church roof, are found by drawing the narrow side of the church roof separately as at n, and placing the lower part of the tower exactly in the middle, as may be seen here close to n. Each of the aforesaid segments is a triangle like that at n. The roof of the tower, altering only the height, may be drawn like that of the pigeon-house; the triangles are all equilateral. Construction . The same as of the house with the sloping roof and of the pigeon-house. If, besides the roofs of the church and tower, the lower parts of tl*e church are likewise to be painted, it may be done as marked below to the left or in the middle tothe right of the tenth Plate. Books published by Boosey and Sons, Broad Street, Ex¬ change ; and to be had at T. Boosey and Co/s Foreign Music Warehouse , 28, Holies Street , Oxford Street. FAUSTUS, from the German of Goethe. A New Translation, beautifully printed in 8vo. on fine paper, and embel¬ lished with a correct Portrait of the Author, 6s. in extra bds. It is not pretended that the following pages contain a full trans¬ lation of this celebrated drama. The slight analysis drawn up as an accompaniment to Retsch's Outlines being out of print, the pub¬ lishers felt desirous to supply its place with a more careful ab¬ stract of Faustus ; with this view, the most striking passages and scenes of the original have been translated in blank verse, and con¬ nected by a detailed description in prose. 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This valuable work is strongly recommended both to those who are beginning to learn this most copious of modern languages, and to thos.e who being already acquainted with it are desirous of ob¬ taining a comprehensive knowledge of its peculiar characters and beauties. —EcL Rev. June 1821. Tm-grey &: "Ma. del e.y Litla o g- Ingrey $C Ma.&eleyXiitliog-. 310 gtraxLcl