Chapter VI: Part 6

The method of printing etchings, mezzotint, and other intaglio plates is the same to-day as it was in the time of Rembrandt and Durer. The modern inventor has found no way to economize time, labor, or expense in the work--excepting that in the case of postage stamps, bond certificates, and similar plates, which are printed in vast quantities, the work has been adapted to the steam press.

In the olden time the engraver, or etcher, himself was to a considerable extent his own printer. He worked at engraving his plate until he needed a proof to show him how the work was progressing. Then he printed, or "pulled," a proof and resumed his work, taking proofs from time to time until he had completed the plate to his satisfaction. Then, if only a small edition was required, he printed it. Proofs taken during the making of a plate are known by plate engravers and printers as the "states" of a plate, and it is due to the whim of the etcher, the softness of the copper, and the wearing of the plate in printing that we have prints representing many "states" of a single plate which might otherwise have had but one state, thus depriving one modern print collector of the privilege of discovering in his proof three hairs more or less in a donkey's tail than his rival finds in another proof, which makes the former's more valuable by several hundred pounds.

One form of press is used for all manner of intaglio plate printing. It consists of a framework supporting two heavy iron rollers, between which moves a flat iron travelling plank, or bed, and on this bed the plate to be printed is laid. The pressure of the rollers is regulated by screws at each end of the top roller, which is covered with two or three pieces of thick felt. This top roller is revolved by handles and the bed moves along with it under the pressure of the roller. At one side of the press stands a rectangular box, or "stove," made of iron, or having an iron top. The top is heated by gas and on it the printer puts his plate while inking and wiping it. The heat thins the ink as it is applied, allowing it to be worked freely and to be "lifted" easily by the paper.

The ink is made of fine bone dust, vegetable or other form of carbon, which has been carefully cleansed from foreign matter and ground to the necessary fineness in combination with burned linseed oil. Its strength and consistency should be varied according to the plate which is in hand, and the color also may be varied to suit the character of the plate by the addition of pigments.

The paper used in plate printing may be one of several kinds, but the usual variety is a fine white paper free from spots and imperfections which might mar the appearance of the finished print. This paper is made either by hand or machinery of selected bleached cotton rags, and has a soft, spongy surface which yields readily under the pressure of the plate. Before it can be used the paper is moistened and allowed to stand for from one to twelve hours, or even longer, until it becomes evenly and thoroughly dampened,--but not wet,--so that it will more readily force itself into the lines of the plate and take therefrom and hold the ink.

Before printing a photogravure, mezzotint, or other engraved plate the printer must first carefully examine it to see that it has no scratches, and that no dried ink remains in the lines from the last printing, and, in fact, that there are none of the many possible impedimenta which might prevent the production of a perfect print. The plate being in proper condition, it is then thoroughly cleansed with turpentine or benzine, all traces of which must be carefully wiped from the surface before the ink is applied. The plate is then laid on the heated iron box or "stove" until it has become thoroughly warmed. The surface of the plate is covered with ink, put on by means of an ink-roller, or perhaps the old-fashioned dauber, and the ink is thoroughly worked into the lines or depressions in the plate. After this the ink on the flat surface of the plate is entirely removed by wiping with rags. The printer's hand, which has become more or less covered with ink from the rags, is then passed over a piece of chalk, or gilder's white, and lightly rubbed over the surface of the plate, to remove the last vestige of the ink, leaving a highly polished flat surface with the incised lines or depressions filled with ink to the level of the surface.

The plate is then ready for printing and is placed on the bed of the press, a sheet of dampened paper laid upon it, and both are then run between the rollers of the press. As the top roller is encased in soft blankets, the soft, dampened paper is forced into the ink-filled lines of the plate, and when the paper is removed the ink clings to it and shows an exact impression of the engraving. This entire process must be repeated for each print made from an intaglio plate.

While the printing of a steel engraving or photogravure is a more or less mechanical operation, the printing of an etching--and "dry points" may be included--is oftentimes as much of an art as the actual etching of the plate. The two styles of printing may be compared to two kinds of fishing,--that of fishing for flounders with a drop line, from a flat-bottomed boat at low tide when one must just sit tight until one has a bite, and then haul in the fish, bait up, drop the line and wait again, as against that of angling for trout on an early spring day, dropping the fly in a likely spot without success at the first cast, persevering until rewarded by a rise and then by the sport of playing the fish, giving him line and reeling him in as about he circles and finally is landed. A good one, perchance, but the sport was in landing him. So it is with printing an etching. There is the opportunity to play with, and work hard over, a plate. Perhaps the etcher has not, for reasons only known to himself, put in the plate all that can be shown in the print by ordinary printing. The printer actually has to interpret in his printing the etcher's meaning, for the which, as a rule, he gets "more kicks than ha'pence," and in the end wishes he had stuck to plain plate printing as far as the profit is concerned.

In the process of printing an etching, the printer first covers the plate with ink and then wipes it with the rags, and, if necessary, with the hand. It depends entirely upon the etched work of the plate as to how it must be wiped, and it rests with the printer to prepare a proof which is satisfactory to the etcher. The plate is wiped "closely" where the high lights are required or a tint (a thin coating of ink) left over certain portions where it needs to be darker. After this the plate is "retroussed," which is accomplished by passing a very soft piece of fine muslin, or a "badger blender,"--a soft brush used by artists,--delicately over the work in the plate and drawing the ink up and over the edges of the lines. This softens and broadens the lines and gives a very rich effect, and, if continued sufficiently, fills the spaces between the lines and produces an almost black effect. All this work is varied according to the wishes of the etcher. A plate that left the etcher's hand a mere skeleton may be made to produce a print which is a thing of life. The possibilities of an etching in the hands of a skilful printer are almost limitless; the effects can vary with every impression, each showing a new picture. His processes are as interesting as those of the etcher himself, and it is within his capabilities to transform an etching from a broad daylight effect into a moonlight scene, including the moon, by judiciously, or injudiciously, inking and wiping the plate.

A "dry point" plate is produced by drawing on a copper plate with a steel or diamond point, and without biting by acid. The lines are cut into the copper and a burr thrown up which holds the ink in printing, and produces a soft, velvety line. The method of printing such a plate is similar to that of an etching, but the possibilities are not as great in the printing, as they rest to a greater extent upon the work of the artist. A great depth of color, producing wonderfully rich effects, can be obtained and the finer lines can be made much more delicate than by any other method.

The printing of intaglio plates in color flourished for a short period in the latter portion of the eighteenth century, and the best prints of that time now in existence are of rare beauty and bring enormous prices. The process, now almost a memory, is a costly one, and this prevents its use in book illustration excepting for volumes which command a very high price. This kind of printing requires the plate to be actually painted by hand with inks of such colors as the picture may require, and the painting has to be repeated for every impression that is taken. The colors are put on with a "dole,"--a small piece of muslin turned to a point,--and great care must be taken that they do not overlap, or run into, each other. As each color is placed, the plate is wiped clean with rags as already described, and when all the colors have been properly placed, the plate is pulled through the press in the same manner as in ordinary printing.

The successful printer of color plates must be a rare artist or else work under the direction of an artist. Little of this work is now done except in Paris and Vienna, and the limited number of color plates of this kind used for book illustration in this country does not warrant the time and expense necessary to train printers capable of doing the work. Even English plates are usually sent to Paris to be printed.

It is difficult to describe the work of what is termed artistic printing. Every plate is a subject to be treated by itself, and no hard and fast rule can be applied. It is really a matter of artistic feeling, and to revert to the simile of the angler, one cannot explain how a trout should be played, but can only say that it depends on the fish, the water, and the circumstances. A fisherman can _show_ you, if you are on the spot, and so can the printer.

THE GELATINE PROCESS

By Emil Jacobi.

Of the many photo-mechanical processes which have come into existence in recent years, the photo-gelatine, next to the half-tone process, has shown the greatest adaptability for practical use in art and commerce.

Whatever the name may be,--Collotype, Artotype, Albertype, Phototype, or Carbon-gravure,--the principle is the same; an impression is made in printer's ink from a photo-chemically produced design on a gelatine surface, either on the hand-press or on a power cylinder press similar to that used in lithographic printing.

There is hardly any process which is more capable of producing fine works of art. It is the only true method for reproducing, in the full sense of the word, an etching, engraving, a drawing in pen and ink, an aquarelle, a painting, or objects from nature. The depth and richness of tone of an engraving, the delicate tints of an aquarelle or india-ink sketch, and the sharpness of the lines of an etching or pen sketch can be reproduced with such fidelity that it is often impossible to distinguish the copy from the original, and this is achieved the more easily as the printing can be done in any color and on any material, be it paper, parchment, leather, or textile goods.

Another great advantage of a gelatine print is its inalterability and durability, no chemicals being employed in transferring the picture to the paper. The picture itself being formed by solid pigments, such as are used in printer's ink or painter's colors, there is no possibility of its fading or changing color, which cannot be said even of platino prints, at present considered the most lasting of all photo-chemical processes.

Like all new inventions, the photo-gelatine process, in its early stages, had to undergo severe trials, and for some years almost disappeared from public view, after many failures precipitated through unscrupulous promoters and inefficient persons who claimed impossibilities for the new process. It took years of patience and perseverance to regain the lost ground and overcome the opposition of those who had suffered by the failure of this process to produce the promised results; but at present it is, in Europe, one of the methods in most general use for illustrating, and in this country it is making steady progress and rapidly finding favor.

The process, simple as it may seem to the casual observer, requires, more than any other photo-mechanical process, skilled hands in its different manipulations to keep it up to the standard of perfection. The following short description will give the uninitiated sufficient enlightenment to think and speak intelligently about it.

The foundation or starting point, as of all the other photo-mechanical processes, is a photographic negative; that is, a picture on glass or some other transparent substance, in which the light parts of the picture appear dark, and the dark parts light in transparency, graduated according to the different shades of tone in the original. The next and most prominent feature is the printing plate. A perfectly even glass, copper, or zinc plate is covered on the surface with a solution of fine gelatine and bichromate of potassium, and dried. This printing plate is then placed under a negative and exposed to the light. The action of the light on the bichromated gelatine forms the basis of this process. In proportion to the graduated density of the negative, the light acts more or less on the bichromated gelatine, rendering the latter, in proportion, insoluble and hardening it. After sufficient exposure the plate is washed out in water to eliminate the bichromate not acted upon by the light, and is then actually ready for the press.

If the printing is to be done on a hand press, a lithographic leather roller is charged with printer's ink, and the plate, which has been fastened on a suitable bed-plate in the press, is rolled up while it is still moist. Those parts of the plate which were acted upon by the light and hardened, repel the water and take up the ink, and thus all the graduating tones, up to the high lights or white parts, which have not been affected by the light, will take the ink proportionately. The white parts of the picture, where the light did not act upon the gelatine during the exposure under the negative, retain the natural property of gelatine to absorb water, and consequently repel the ink altogether.

From the foregoing it will be easy to understand that a certain degree of moisture in the plate is necessary to get a correct impression. After the leather roller, a composition roller, such as is used in typographical processes, is employed to make the ink smooth and give the fine details not obtainable from the rough surface of a leather roller. A sheet of paper is then placed upon the plate and by pressure the ink is transferred from the plate to the paper.

The printing, in former years, could only be done on hand presses; but with the introduction of improved power presses especially adapted to it the process itself has been so perfected that the finest work can be executed on them, at the same time insuring greater evenness and increased quantity of production, and also admitting the use of larger plates than would be possible on a hand press.

The prevailing impression, whenever machinery is employed to supersede hand-work, is that the production is increased to such an extent as to reduce the cost to a minimum, but in the gelatine printing process, even with the aid of power presses, the rapidity of printing is far behind the possibilities of the lithographic or typographical printing press, and the process, therefore, is only applicable to works of art, and the better grade of illustrations in literary and commercial publications.

The lesser rapidity of production and the greater cost is balanced by the quality, where this item comes into consideration; and where only small editions are required, even the cost compares favorably with other methods, as the initial cost of preparing the printing plate is small compared with the cost of photogravure or the better class of half-tone plate. It is only in cases of large editions of many thousands that the advantage of rapid printing reduces the cost of the initial expense. But fine art publications and illustrations will never be used in very large quantities, and, therefore, there is a large field for the photo-gelatine process in this country, where it is as yet so little used. In France, Germany, and Austria there are dozens of establishments which employ ten or more power presses for photo-gelatine work, while here only within the last few years has the process been sufficiently appreciated to warrant the introduction of a few steam presses; and these have to be imported from abroad at a high rate of duty, as the present demand for the presses does not make it advisable for our domestic press builders to invest in their construction, especially after an isolated attempt in that line, misguided by inexperienced and unpractical men, which turned out to be a total failure.

Notwithstanding all these difficulties and obstacles, it is a fact that the photo-gelatine process has gained ground sufficiently to indicate a prosperous future, as its products are becoming more widely known and appreciated.

LITHOGRAPHY

By Charles Wilhelms.

As an embellishment to the modern book, chromo-lithographed illustrations are quite popular and in some cases absolutely necessary, being not only attractive, but conveying an accurate idea of the color as well as the form of the object illustrated. Although the illustration is nothing more than a colored print, it may be a revelation to some when they learn of the numerous details incidental to its production.

It may not be generally known, and yet of sufficient interest to the reader to state that the art of lithography, or surface printing, was invented accidentally. The inventor, Aloys Senefelder, had been engaged for years endeavoring to find some process for etching copper plates as a substitute for typographic printing plates; and the piece of stone (of a kind now known as Solenhofen lithographic stone), which eventually led him to the discovery of lithography had been used by him as a slab upon which he had been accustomed to grind his printing ink. The materials which he used for his acid-resisting mixture while etching his copper plates were beeswax, soap, and lampblack, and in selecting these materials he accidentally invented the basis for all crayons or lithographic "tusche" or inks, now used so extensively for drawing on stone. It seems that Senefelder finally became thoroughly disheartened about his etched copper plates, mainly owing to the great expense and labor connected with their production, and was about to discontinue his efforts when the idea occurred to him to experiment with the stone which he had used as an ink slab for so many months, treating it in the same manner as the copper plates.

He knew that the calcareous stone was easily affected by acid and that he could protect its surface against it by a layer of wax. After polishing the surface of the stone and coating it with a slight layer of wax, he made his drawing with a pointed tool, laying bare the surface of the stone where he desired the engraving. Then applying the acid and removing the remaining wax, he filled the etched lines with printing ink, cleaned the surface of the stone with water, and was enabled to obtain an impression on paper from it. This manner of treating a stone has been employed by vignette engravers for many years, but of late has become obsolete. The result gave encouragement to Senefelder and induced him to renew his experiments, when he was accidentally led a step farther in the direction of surface or chemical printing.

Senefelder had just ground and polished a stone, when his mother entered the room and asked him to take a memorandum of some clothes which she was about to send away to be laundered. Having neither paper nor ink at hand, he hastily wrote the items with a pen, dipped in his acid-resisting mixture, upon the stone which had just been polished. When he afterwards started to wipe the writing from the stone, it occurred to him that it might be possible to reverse his process by etching the surface of the stone, leaving the writing or drawing in relief, which could be printed from in the same manner as from type. He was fairly successful in this, and after many disappointments and much hardship, he eventually succeeded in interesting a capitalist, with whose assistance he was enabled to establish his new relief stone process on a commercial basis.

The process, however, was at best only an imperfect one, and it seems strange that the final discovery of surface or lithographic printing should have been so long delayed, when Senefelder was in reality so near it, when he first poured the acid over the stone containing his laundry memorandum. If he had instantly washed off the acid and cleaned the surface of the stone with water, he might have proceeded to print thousands of impressions by simply keeping the surface of the stone moist while passing the ink roller or dabber over it, then drying and taking an impression, and repeating this operation indefinitely. It is not surprising, therefore, that a man of such persistence and capability as Senefelder should eventually discover the best method for drawing and printing from stone; for it is a fact that, since he perfected his invention, more than a hundred years ago, it has been hardly possible to improve on his methods, so completely did he cover the entire field of manipulation in this direction. Continuing his experiments, Senefelder finally found that the calcareous stone absorbed and held grease, and that it just as readily absorbed water, where the surface was exposed and clean; that any design drawn or transferred with a greasy crayon or ink upon a cleanly polished stone would be firmly held, after being slightly etched; and that after such a stone had been moistened, it could be inked with rollers, the ink adhering only to the greasy matter constituting the design (although it did not stand out in the relief) and that the ink rollers would not smut the stone, the ink being repelled by the water or moisture covering its surface. Upon this principle of chemical affinity, the adherence of greasy substances to each other and the mutual antipathy of grease and water, the art of lithographic printing is based.

The methods or processes now employed in reproducing oil-paintings, colored photographs, or water-colors by lithography are numerous, and require great skill and experience, not only on the part of the lithographic artist, but also on the part of the printer. Photography has of late years been used to a great extent in creating the basis of the color plates, to be afterwards perfected by the manipulation of the experienced chromo-lithographer.

To insure a satisfactory result the first essential is, of course, a good original, which can be made in water-color, oil, or pastel. The number of printings to be employed should be predetermined and a color scale adopted. The lithographer must carefully analyze the original painting, making his calculations as to the best way of obtaining the desired color effects by a judicious selection and use of his colors, and the superimposing of one printing over the other, so as to obtain true color values. It must be remembered that, while the average painter has an unlimited variety of pigments at his disposal, the lithographer is in this respect very much at a disadvantage, not usually having more than from six to fourteen colors with which to produce a facsimile of the original.

The first step is the making of the so-called key-plate. A piece of gelatine is laid on the original, which is, let us say by way of illustration, a water-color to be reproduced in ten printings, and a careful tracing of the original is made by scratching, with an engraving needle, the outline of each wash or touch of color composing the picture. This being completed, the lithographic ink (tusche) or transfer ink is carefully rubbed into the tracing, which is laid face down on a polished lithographic stone, slightly moistened, and passed through a hand press; thereby transferring the ink from the engraved lines to the polished surface of the stone. The design on the stone is then rolled in with black printing ink and etched, thus enabling the lithographer to take the necessary ten impressions of the key-plate. These, in their turn, are again transferred to as many lithographic stones. This is accomplished by dusting the impressions with a red powder, which adheres only to the design printed on the sheet. The powdered outline design is then transferred to the surface of the stone by passing both through a hand press. The key has been previously provided with register marks (a short horizontal line intersected by a vertical one) at top, bottom, and both sides. These are of the utmost importance to the prover, and finally to the transferrer, who prepares the work for the press, as without them it would be impossible to register one color over the other in its proper place. At any stage of the process, the register marks of all ten colors, which have been made in succession on a single sheet of paper, should coincide precisely and appear as a single mark in the form of a small cross.

The lithographer now has before him the ten stones, each stamped with the identical network of lines in red chalk representing his key. He proceeds to draw each color-plate successively, at all times adhering closely to the red chalk outlines, filling in with tusche where full strength of the color is required and using lithographic crayon or the stipple process to reproduce the various gradations of this color in order to secure the full color value of each printing. The register marks are ruled in on each stone corresponding to those on the key, so that the prover or printer has these marks in the same identical position on each and every color as a guide for register.

As each stone is finished it is etched; that is, treated with a weak solution of nitric acid and gum-water, in order to remove all accidental traces of scum from its surface, and to prepare it for printing. Then proofs are made, which serve as a guide to the lithographer during the progress of his work, and finally as a guide to the transferrer and to the printer. The proving is done on a hand press, and it is here that we have our first glimpse of chemical printing, which, notwithstanding its simplicity, seems so mysterious to one uninitiated in its secrets.

The writer recollects his own first experience. A stone had just been placed fresh from the etching trough in the bed of the press, when, to his amazement, the prover deliberately proceeded to eliminate every trace of the drawing with a sponge saturated with turpentine. After drying the stone by means of a fan, he passed over the surface a sponge soaked in water, then applied black ink with a roller, when behold, the drawing was restored in its entirety. The solution is very simple: the greasy matter is absorbed and held by the stone and in its turn repels water and attracts grease.

An impression is made with black printing ink on paper by passing it through the hand press. The black impression approved of by the lithographer, the stone is again cleaned with turpentine and proved in the color required, and so with each color-plate, until the proof is complete. When photography is employed, the half-tone negative takes the place of the key. Prints are made from a reversed negative on the sensitized surface of the stone, or on as many stones as the color-plates require, and then manipulated by the lithographer, who adds or modifies strength with his "tusche" or crayon, and scrapes or washes out lights where necessary. The various modes of procedure are too diverse to enter into here, but it may be well to mention that the principal ones are the albumen, the asphaltum, and finally the three-color process, the latter differing but little as far as the artistic part of the work is concerned from that employed for making relief printing plates for the typographic press.

The original drawing plates, or stones, are not used to print from direct unless the edition be very small. Just as the typographic printer uses electrotypes in place of the original type or cuts, the lithographer makes transfers from the original stones to print his edition and carefully preserves the original stones for future editions. The transfers are prepared in a very simple manner. The original stones are rolled over with a specially prepared transfer ink, and impressions are taken from them on a paper, known under the name of transfer paper, coated with a sizing of starch, flour, and glycerine. By printing from the original, only one copy can be produced at each impression, whereas by using transfers a number of copies of the original can be printed at one impression. For example, if the picture measures 8 x 10 inches of paper, a transfer can be made containing fifteen copies on one sheet measuring 30 x 40 inches. In this case fifteen impressions are made from the key-plate as well as from each of the color-plates, on the paper, and with the ink described above.

The first transfer to be made is that of the key-plate. The fifteen impressions are laid in their proper positions on a sheet of paper of the required size, and are held in position on same by indentations made with a dull-pointed steel tool. The sheet is laid face down upon a cleanly polished stone, which is then repeatedly pulled through a hand press until all the ink has been transferred from the paper to the surface of the stone. The transfer paper still adhering to the stone is then moistened and washed off the stone, leaving the design completely transferred to the stone. A slight solution of gum arabic and water is then applied, the stone washed clean, and after being repeatedly rolled in with printing ink and etched, is ready for printing. An impression is then made in the usual manner from this key-transfer, which impression is coated with a solution of shellac. This is done for the purpose of rendering it impervious to the effect of the atmosphere, thus insuring against its stretching or shrinking. Upon this varnished key-sheet all subsequent transfer impressions of the ten colors are "stuck up," to use the technical term, and transferred to stone in the same manner as is employed in the making of the key-transfer. The register marks serve as a guide in "sticking up" the separate transfer impressions and insure an accurate register of the colors laid over each other during the process of printing. New register marks are placed upon the key-transfer at top, bottom, and sides similar to those on the original (which are removed from the transfer), and these new marks now appear on all color transfers to serve as a guide to the steam-press printer in printing his edition. He likewise uses the hand-press proofs of the picture as a guide in mixing his inks.

The lithographic power printing press is constructed on the same general principle as the ordinary typographic press, excepting that it is provided with an apparatus for moistening the stone previous to the application of the ink rollers. The stone containing the design is placed in the bed of the press, and the moisture, as well as the ink, is applied by means of rollers similar to those used in the typographic printing press. All the ten colors are now successively printed from the transfers on a steam press, and if it is a perfect job, the pictures can be cut to size and delivered to the publisher.

At present the cumbrous stone and the slow-moving flat-bed press are being supplanted by the light and pliable aluminum plates and the fast-moving rotary presses. The aluminum plate has all the requisites for the highest grades of lithographic or surface printing, and the rotary press is beyond doubt a vast improvement over the flat-bed press, not only as to speed, but also as to the quality and uniformity of its product. The mode of procedure in making transfers to aluminum plates is much the same as that employed in making transfers to stone. The pliability of the aluminum plate and the ease with which it can be adjusted to a printing cylinder has resulted in the successful introduction and use of two-and three-color lithographic rotary presses, printing at one operation two or three colors. It has been demonstrated that the result is fully equal to that obtained from the single-color press, provided good judgment be used as to the succession of the colors or printings. This marks a new epoch in the art of lithography and enables it to compete with the typographic three-color process, which has been making such wonderful progress during the last five years, and at one time seriously threatened lithography as a medium for the reproduction of certain classes of colored illustrations.

Our experience teaches us, however, that the surface or lithographic and the relief or typographic method will never seriously interfere with each other, but on the contrary by actively competing in all matter relating to the reproductive art will continue to improve their respective methods, and thus enable them to satisfy the continually increasing demands on the part of the public for colored illustrations, not only as to the quantity but particularly as to the quality thereof.

COVER DESIGNING

By Amy Richards.

So many books of the present day have decorative book covers especially designed to fit each book that many people who buy the books are beginning to ask what suggests these designs and how they are executed.

Having made book-cover designs for a number of years, I have been asked to write a practical account of how these book covers are made, which will give an answer to some of these questions. This account will have no bearing on the designs used on hand-bound books with their beautiful "tooled" covers. These are a different branch of the art altogether from the so-called "commercial bindings" which I am about to describe. The designs for these tooled covers are as a rule made by the same hands that bind the books.

Every year hundreds of books are published that need "commercial" book covers. In many cases these covers are used to help sell the book; that is, they must be attractive enough to draw attention to the book as it lies on the counter in the bookshops and other places where the book is on sale.

Some publishers have artists, regularly employed, to make their own designs exclusively; but as a rule each publisher keeps in touch with a number of designers, sending for one or the other as the needs of a particular book require. When a design is needed, the particular sort of cover required is discussed with the publisher, the number of colors that can be used is mentioned, also the exact dimensions of the book and the material to be used in binding the book. Almost every designer prefers to read the manuscript of the book, if possible, or to have a synopsis of it, for, naturally, he can make a much more suitable and successful cover if he has a complete idea of the subject of the book.

Having read the book, or having been told what it is about, the designer makes one or more rough sketches in color, giving a general idea of the book cover, both as to design, color scheme, and material to be used in binding. If one of these sketches is selected, the designer then makes an accurate "working" drawing, either in color, or black and white. If a black-and-white drawing is made, a rough color sketch is sent with it to indicate how the die is to be cut.

A finished book-cover design can be made on water-color paper, bristol-board, or a piece of book-cover linen. This last method is popular with publishers, as it shows them how the cover will look when finished. A designer keeps sample books of all the most popular bookbinding materials, which the manufacturers are glad to supply. A practical designer always chooses for the ground color of a design a cloth that is to be found at one of the regular book-cloth manufacturers.

When a book-cover design is finished, it is neatly mounted on cardboard and a careful note is written on the margin, telling how the design is to be executed by the binder, the kind of cloth to be used, and its number in a particular sample book. Unless the design is executed on a piece of book cloth, a sample of the cloth desired is pasted under the directions. The design is then cut in brass by a die cutter, as described in the next chapter, and the covers are stamped in gold or inks from this die by the binder. The design must be the exact size of the future book or drawn larger in exact proportion for reduction to the proper size.

Gold is of course the most expensive way of reproducing a cover design, and a publisher generally tries to get as good an effect as possible without the use of gold, or he limits its use to the title lines or to a small part of the design. Four inks is usually the extreme number used, and more often only two or three are used, or gold and one ink.

Several styles of decoration are used in designing book covers; but they may be put roughly into two classes,--those that are purely ornamental and those that are pictorial. Personally I am in favor of the purely ornamental cover, as being more dignified; but there are books that seem to require a pictorial cover that is treated somewhat in the fashion of a decorative poster.

A book-cover designer to be successful should be very versatile and able to make use of figures as well as thoroughly versed in the use of ornament.

One of the most important parts of a book cover is the title, to which the amateur and inexperienced designer does not always give sufficient attention. The title must be clearly drawn and everything else in the cover made subservient to it, so that the first thing the eye falls on is the title. For this reason a thorough study of lettering is necessary for the successful cover designer, and much practice in order to become proficient. A very successful cover may be due simply to a well-selected cloth with lettering properly drawn and placed so that the eye is perfectly satisfied and the whole has an air of distinction. Each designer grows insensibly into his or her own particular style, which those who are interested in book covers grow to know; but the more varied his style the more in demand will be the designer.

The designing of book covers is a minor art, but since there is a constant demand for ornamented covers, the more taste and skill that can be devoted to the making of them, the better. When one looks back to the covers of fifteen years ago, one realizes what an advance has been made, and that the standard has been raised higher and higher, until at the present time many a famous illustrator or decorative painter occasionally turns his or her hand to the designing of book covers.

THE COVER STAMPS

By George Becker.

Not many years ago the crudest and most primitive devices were used in the production of a book cover. The artist, if such he could be called, who was responsible for the design, seldom went to the trouble of furnishing the engraver with anything more than a pencil sketch, which the latter transferred to a brass plate about one-quarter of an inch thick by coating the plate with beeswax and laying the sketch on it, face downward. When the paper was removed the beeswax retained the marks of the lead pencil. He then began the tedious process of outlining it by hand with a graver and afterward finished it with a chisel.

But the exacting demands of modern artistic taste, the improvement of scientific methods and the pressure of competition have marked a complete transformation in the business of making dies for book covers. A few pencils and gravers, a vise bench, and a grindstone no longer make an engraving establishment. Colored sketches of most painstaking execution, accompanied by a working drawing in black and white, have taken the place of the old pencil sketch. These artistic productions, having passed the ordeal of critical examination, are handed over to the photographer, who, if he understands his part, does all that the beeswax did, and a good deal more. He takes the black-and-white drawing above referred to and reproduces it, in the size desired, directly on a brass plate covered with a sensitive coating, and then having prepared it with acid-proof preparations, he passes it over to the etcher.

The etcher in his turn, with unerring judgment in the strength of his acids, does what the most careful outliner could not accomplish; he produces a perfect facsimile of the original drawing, with all its artistic freedom. The process used is practically the same as the zinc etching process described in the chapter on half-tones and line plates. The plate, having been etched as deep as is safe, is then turned over to the router, whose business it is to cut out all the metal between ornaments and lettering to the proper depth. This done, the engraver, who in former years practically dug out the entire plate with his hand tools, comes in to give the finishing touches and correct any slight imperfection that may remain. It is of the utmost importance, of course, that the dies should be clear-cut and deep, to avoid clogging up in printing, particularly in the plates used for stamping in inks. The experienced and watchful engraver is expected to detect any spots where the etching process has not fully accomplished its purpose. Lettering, especially, should be cut clear, deep, and free from "feather," or ragged edges.

The above process applies to single plates or to plates intended for printing in one color only, or in gold. Where two or more colors are wanted, the photographer has to make as many prints as there are colors in the artist's design, as each one calls for a separate plate. The proceeding otherwise remains the same, excepting that to the engraver's task is added the necessity of making sure of a perfect register or fitting together of the various parts.

The transformation in the demands of publishers and writers has become so great since the days of the primitive little shop above referred to, that a die cutter, working on those lines, would be hopelessly out of the race at the present day. In order to meet satisfactorily the artistic expectation of the present generation a first-class engraving establishment must have: an accomplished staff of artists, supplied with a library of standard authorities on the various schools of art, as well as a good selection of modern art publications; a skilled photographer with a complete photographic outfit, including, of course, a suitable gallery with the best obtainable light, both natural and artificial; and lastly a complete staff of routers and engravers, some of whom should be specialists in lettering, while others should devote their attention exclusively to figures.

Of all the elements that go to make book-cover decoration the lettering is by far the most important. It should receive special care, as in some cases it constitutes the entire decoration. In this respect the critical taste of the present day shows itself even more strongly than in the matter of decorative ornamentation, and no amount of ornamentation, whatever its artistic value, can redeem a cover whose lettering is lacking in style, character, or typographical merit of some kind. Experience is such a good teacher that I can usually tell, by looking at a die, not only who designed the lettering, but also what workman engraved it.

Some dies are intended for stamping in gold or colored leaf and consequently have to be heated sufficiently to cause the leaf to adhere to the cloth cover, while others are meant simply for black stamping or stamping in ink of various colors; but all are engraved on brass for the sake of durability. Sometimes, where very large editions are expected, as of school books, steel is substituted for brass.

The die, when finished, is used by the binder in a stamping press. Color work calls for considerable skill on the part of the stamper, who should be an expert in mixing inks as the best-cut die will often show poor results if not properly handled. In fact, the success of a book cover depends on three individuals,--the artist who designs it, the engraver who cuts it, and the stamper who prints it.

BOOK CLOTHS

By Henry P. Kendall.

The great increase in the number of books produced each year has brought a corresponding development in the use of prepared cloth for the bindings. Previous to the beginning of the last century cloth was almost unknown as a material for covering a book. Books were then very costly. They were printed laboriously by hand, on paper also made by hand, and were naturally considered worthy of the most lasting bindings. As the life of books depends on the strength and wearing quality of the covers, such materials as wood, vellum, and leather, often reenforced with metal, were generally used.

The nineteenth century has marked a great progress in the variety and quantity, if not in the quality, of published books. Improvements in methods and in machinery have progressed side by side with economies in paper making. As the cost of producing the printed sheets became less, a demand arose for a correspondingly cheaper material for bindings. The want was satisfactorily met by the use of cloth, and from the day that it was first used it has become more and more a factor in book manufacturing.

When so commonplace a binding material as cloth was selected, artists and binders and publishers considered that ornamentation on such a material was almost a waste of time and money. So the libraries of our grandfathers contained rows of gloomy and unattractive books, bound in black cloth stamped in old-fashioned designs, with a back title of lemon gold, and it is only comparatively a few years ago that binding in cloth began to be considered worthy of the attention of the designer and the artist, but since then the demand for a more varied assortment and a wider choice of colors and patterns has been steadily growing.

Let us consider briefly the different kinds of book cloths that are most commonly used to-day and try to make clear to the lay reader the different fabrics, whose nomenclature is so frequently confused even by binders and publishers.

Book cloths, from their appearance and manufacture, fall into two natural divisions, the first being the so-called "solid colors," in which the threads of the cloth are not easily distinguishable. This division contains two grades of cloth, generally known as common colors and extra colors. The standard width of all book cloths is thirty-eight inches. The commons and extras are sold by the roll, and the standard number of yards to the roll of these fabrics is thirty-eight.

The second division consists of the so-called "linens" and "buckrams," in which each thread, with the imperfections and peculiarities of the weaving, are plainly seen and form a large part of their picturesque effect.

The first of the "common colors" to be used was the black cloth already referred to, but they are now made in many colors, though chiefly in simple, pronounced shades, such as browns, blues, greens, and reds. These cloths have been dyed, and sized with a stiffening preparation. They are the cheapest of the solid colors and are used in various patterns, which are embossed on the surface during the process of manufacture.

The ordinary patterns which are in the greatest use to-day are designated in the trade by letters. Perhaps the most familiar is the "T" pattern, straight parallel ridges or striations, about forty to the inch, and running across the cloth from selvage to selvage. When properly used, these ribs run from top to bottom of a book cover. For this reason it is not economical to use the "T" pattern if the height of the cover is not a multiple of the width of the cloth, as it results in a waste of cloth. This explains why the cost of the book bound in "T" pattern is frequently somewhat higher than the same book bound in another pattern of the same cloth.

A similar design is the "S" or silk pattern, made up of finer lines running diagonally across the cloth, giving the surface a sheen somewhat resembling silk. Also in common use are a group of patterns composed of small irregular dots or points, the finest of which is known as the "C" pattern, a coarser pattern of similar design, the "J," and, coarser still, the "L," which has somewhat the appearance of the coarse grain of a morocco leather. The pattern known as "H" is a simple diamond made by intersecting diagonal lines similar to the ribs of the "T" pattern. Other patterns in less common use are those resembling morocco leather, pigskin, and patterns in fancy designs.

Following the increased use of the common cloths, attention was given to the artistic effects which might be obtained by using colored inks and gold on lettering and design, and also to the effect obtained by pressure of hot binders' dies or stamps upon covers made with embossed cloths, which latter process is known in binding as "blanking" or "blind" stamping.

With these advances in the art of cover decoration came the demand for the more delicate tints and richer shades of the colors, and as a result finer colors than could be produced in the common cloths were introduced to meet this demand; these fabrics were called the "extra" cloths. They have a solid, smooth surface, more "body," and are in every way firmer and better fabrics, and more costly, too, some of the shades costing from twenty to forty per cent more than the common cloths.

Extra cloths are used largely on the better class of bindings, such as the popular fiction, holiday books, scientific books, and books of reference, and whenever fine coloring or a better appearance is desired. These cloths are chiefly used in the plain fabric, which is known as "vellum," and in the "T," "S," and "H" patterns. The trained eye easily recognizes extra cloth from the common cloths, by the appearance of the surface; but any one may readily distinguish them by the appearance of the back, which in the extra cloths is not colored, but in the commons is the same color as the face.

Of the second division of cloths, in which the appearance of the threads becomes a part of the effect, there are first the "linen" cloths. The name "linen" applied to this group is really a misnomer, for many laymen are led to think that such cloths have flax as a foundation and are therefore genuine linens. This is not so, for there is but one genuine linen book cloth to be had, and that is a coarse, irregularly woven cloth, dyed in dull colors, and manufactured by a foreign house. It is quite expensive, costing sixty cents a square yard, which is one of the reasons why it is seldom used.

The chief characteristics of the linen cloths are that the coloring used fills the interstices, but allows all the threads to be clearly seen. The irregularities of the weaving, therefore, stand out plainly, and produce to a certain extent the appearance of woven linen fabrics.