size, viz.—a trifle smaller than the book will be when cut. If it is left larger the folds will naturally be cut away, and the only remedy will be a new map, which means a new copy of the work. For all folded maps or plates a corresponding thickness must be placed in the backs where the maps go, or the foredge will be thicker than the back. Pieces of paper called guards, are folded from ¼ inch to 1 inch in width, according to the size of the book, and placed in the back, and sewn through as a section. Great care must be taken that these guards are not folded too large, so as to overlap the folds of the map, if they do so, the object of their being placed there to make the thickness of the back and foredge equal will be defeated.
Shewing Book with Map thrown out.
In a great measure, the whole beauty of the inside work rests in properly collating the book, in guarding maps, and in placing the plates. When pasting in any single leaves or plates, a piece of waste paper should always be placed on the leaf or plate the required distance from the edge to be pasted, so that the leaf is pasted straight. It takes no longer to lay the plate down upon the edge of a board with a paper on the plate, than it does to hold the plate in the left hand, and apply the paste with the right hand middle finger; by the former method a proper amount of paste is deposited evenly on the plate and it is pasted in a straight line; by the latter method, it is pasted in some
