of the ‘rule’ was to prevent the letters as they were lifted into the ‘stick,’ catching on those of the line below, which, without the interposition of the polished strip of brass, they were liable to do from the nicks in their shanks. When the ‘stick’ was full, he could also with the assistance of the ‘rule’ empt out its number of lines into his ‘galley,’ where, when a sufficient number was collected, they would be made into pages, ready for the forme. The inventor of the composing stick is not known; but as it appears in the hands of the compositor in the engraving facing page 116, and the original of that engraving was first printed about 1498, and the ‘stick’ must have then been in use for some time; and as the principle of the slide is analogous to that which would be adopted in regulating the width of the chamber in the moulds for casting types, it is highly probable that the credit of its invention is due to Schœffer, who had previously immortalized himself by inventing the art of type-founding. [Illustration] Besides the appearance of the insides of early printed books, their ordinary outside bindings demand attention here. Many of the finer specimens were cased in sumptuous covers, in which the art of the goldsmith and jeweller was richly displayed; but for common use a stiff sheet of parchment generally sufficed, the edges of which were folded in, a blank leaf being pasted over them. Others, somewhat superior, had boards of beech or oak for their sides, over which was pasted a sheep-skin leather, on which figures were stamped or embossed;[144] while others again had stiff covers made of waste sheets, or remnants of unsaleable copies, cut down and pasted together. These last have furnished many unique specimens of the works of the earliest printers; and whenever any such are suspected to lie beneath an ancient book-cover, the cover is carefully removed and subjected to a variety of processes to separate its parts, and compel it to give up to the ardent gaze of the palæotypographist, its possible treasure of an invaluable unique specimen of the work of a Gutenberg, a Schœffer, a Zell, a Jenson, a Martens, a Caxton, or some other worthy of the olden time. FOOTNOTES: