When this has thoroughly dried, open the edge towards the other side and continue with the same procedure. The different leaves are thus not only colored at the edges proper, but the color has also been slightly imparted to the upper and lower sides of the leaves at the same time, and for this reason the edge of the book, after it is gilded, appears reddish when the book is opened out. The upper and lower edges must be treated as all other colored edges. In producing the gilt-edge in the way above mentioned, rubbing off with paste and grounding with bole must of course not be employed. The production of edges with metal leaf or aluminium, is under the same rules as for gilt edges. To produce silver edges, a sizing material of a solution of gelatine (one half of a gelatine cake to one cup of water) is used as a surrogate to the albumen. This can also be employed in the laying on of aluminium. For base metal leaf care should be taken that a soft, thin article is used, the one of a light hue is more pliable on account of the larger quantity of tin contained in it than is in the darker copper one. The more pliable French aluminium is preferable to the brittle German article. If gilt-edges are to be produced upon unsized paper, the edges must be sized with a solution of gelatine. Colored Edges with Front and End Gilding. COLORED EDGES WITH FRONT AND END GILDING. The effect of edges gilt front and back with marbling between is beautiful. This edge is especially applicable to books of large size. The plain red-edge (carmine) and every marbled edge can be used in this connection. Antique marbles are greatly adapted to this kind of book-edge decoration. [Illustration] The production of these edges does not offer any especial technical difficulties. The book block must be treated as a hollow edge and must be scraped and then decorated with antique marbling or red color. This having been done, insert the book into the hand-press and mark correctly how far the gilding is to be done. To put on the gold, a solution of albumen is applied to the spots to be gilded and then a good and substantial gold leaf is laid on. As soon as the edge is dry, burnish as any other gilt-edge. A fine chased pearl line at the meeting of the two edges, will greatly enhance the effect of this beautiful edge. The Punched or Chased Gilt-Edge. THE PUNCHED OR CHASED GILT-EDGE. The procedure by which the effect of the gilt-edge is enhanced and enlivened by chasing is very old, in fact nearly as old as the gilt-edge itself. It has been driven out of the market as many another thing by over production and has finally become obsolete. In recent times it has been taken up again on account of the progress in the industrial arts and is now very highly esteemed. The design for such a decoration of gilt-edges should always be prepared by an artist and should always conform strictly to the decorations of the cover.