On the back of the book write the call-number. For this purpose use a tag or label. They can be had in several sizes; round ones are best. Paste the label where it will mar the book least, as near the middle as possible. It is well to put all labels at the same height from the bottom of the back, so far as this can be done without covering essential parts of the lettering. Four inches is a good height for the lower edge of all labels. Labels stick better if the place where they are to be pasted is moistened with a solution of ammonia and water, to remove varnish or grease. If this is done the mucilage or gum on the labels when purchased will be found usually to stick well. After the call-number is written, varnish the label with a thin solution of shellac in alcohol. Labels put on in this way will keep clean, remain legible, and rarely come off. If a charging system using a pocket is adopted, no book-plate is needed, if the pocket, that is, is pasted on the inside of the front cover and has the name of the library on it. When books are classified the call-number is written with hard pencil on a certain page, the same page in all books; a common place is the first right hand page after the title-page, and near the inner margin. This call-number should be written with ink on the pocket and book slip, which is kept in the pocket, or on the book-plate. It is advisable also to write the call-number in ink on some definite page bearing the library's stamp. If a book-plate is adopted let it be small and simple. Have a special plate for gifts, with space on it for writing the name of the giver. Books wear better if they are carefully opened in a number of places before they are placed on the shelves. This makes the backs flexible and less likely to break with rough handling. In cutting the leaves be sure that the paper knife does its work to the very back edge of the top folds, that it is never sharp enough to cut down into the leaves, and that it is held nearly parallel to the fold to be cut. The following is a list of things to be done before books are ready for use in a public library: 1 Book notices and reviews are read and the library's needs and funds considered. 2 Order slips are made out, arranged alphabetically, and compared with the catalog to see if the books listed on them are already in the library. 3 Order list is made out, approved, and sent to dealer. 4 Books arrive and are checked by the bill, and brief notes of date of purchase, initials of dealer, and price are written on the left margin of the second page after the title-page. 5 Bill is checked for items and prices by order slips. 6 Gifts when received are a) properly acknowledged; b) entered in gift book; c) marked with small gift-book plates pasted inside the front cover. 7 Books are looked over (if you wish), collated, especially the expensive ones, to see if complete and sound. 8 Books are entered in the accession book. 9 Books are stamped with library stamp.