The labels, nicely trimmed to uniform size by a cutting machine, (if that is not in the library equipment, any binder will do it for you) are next to be pasted or gummed, as preferred. This process is a nice one, requiring patience, care, and practice. Most libraries are full of books imperfectly labelled, pasted on in crooked fashion, or perhaps damaging the end-leaves by an over-use of paste, causing the leaves to adhere to the page labelled--which should always be the inside left hand cover of the book. This slovenly work is unworthy of a skilled librarian, who should not suffer torn waste leaves, nor daubs of over-running paste in any of his books. To prevent both these blunders in library economy, it is only needful to instruct any intelligent assistant thoroughly, by practical example how to do it--accompanied by a counter-example how not to do it. The way to do it is to have your paste as thin as that used by binders in pasting their fly-leaves, or their leather, or about the consistency of porridge or pea soup. Then lay the label or book-plate face downward on a board or table covered with blotting paper, dip your paste brush (a half inch bristle brush is the best) in the paste, stroke it (to remove too much adhering matter) on the inner side of your paste cup, then apply it across the whole surface of the label, with light, even strokes of the brush, until you see that it is all moistened with paste. Next, take up the label and lay it evenly in the middle of the left inner cover page of the book to be labelled, and with a small piece of paper (not with the naked fingers) laid over it, stroke it down firmly in its place, by rubbing over a few times the incumbent paper. This being properly done (and it is done by an expert, once learned, very rapidly) your book-plate will be firmly and smoothly pasted in, with no exuding of paste at the edges, to spoil the fly-leaves, and no curling up of edges because insufficiently pasted down. So much for the book-plate--for the inside of the volumes; now let us turn attention to the outside label. This is necessarily very much smaller than the book-plate: in fact, it should not be larger than three-quarters or seven-eighths of an inch in diameter, and even smaller for the thinner volumes, while in the case of the very smallest, or thinnest of books, it becomes necessary to paste the labels on the side, instead of on the back. This label is to contain the section and shelf-mark of the book, marked by plain figures, according to the plan of classification adopted. When well done, it is an inexpressible comfort to any librarian, because it shows at one glance of the eye, and without opening the book at all, just where in the wide range of the miscellaneous library it is to go. Thus the book service of every day is incalculably aided, and the books are both found when sought on the shelves, and replaced there, with no trouble of opening them.