A librarian, to be successful, must be a lover of books. The novice, in applying for a librarianship, often puts it down as one of his cardinal qualifications that he is fond of reading. To the active, toiling worker this is not suggestive of business. A love of books very naturally suggests a taste for reading, except when bibliomania is in the blood. A true friend of books is not such because his collection embraces Elzevirs and Aldines, or because they are in Grolier or Bedford bindings, or printed on Whatman or Holland paper,--these are matters of just pride,--but because the army of silent authors, marshalled under his leadership, will diffuse light and knowledge wherever they go. The librarian imbued with this spirit, if he finds time to read, will reflect what he has read. It is to be feared that the librarian who reads in these times is the exception; and yet there can be no question that, if he could have each day an hour or two for reading,--time enough to acquaint himself with the thought of the times, and occasionally commune with the authors of the past,--his efficiency would be greatly enlarged, and his readers would have a supplemental catalogue in him, corresponding, to some extent, to the good work contemplated by our Cooperative Committee. There are in every library very many books that are what we might term, to use a mercantile phrase, dead stock. From the very necessities of the case there must be many books that will be called for only at great intervals, while others never have a friendly consultation. But, aside from these, libraries will often have works of great practical value that are standing idle, because it is not generally known that the library possesses them. There may be a choice lot of works on electricity, a rare collection on ceramics, a fine selection of engravings, representative works in the various industrial arts; the call for them not being popular and large, they might be brought to the notice of a larger constituency by calling the attention of certain readers to them, or by sending a polite invitation to some manufacturing firms, to some professional electricians, or to art schools and scientific schools. Periodicals, before the days of Poole's Index, were sealed books. Libraries have been wonderfully expanded where this index is used. Further cooperation in this direction, as planned by the Cooperative Committee, should receive hearty encouragement. The books of a library may be further enlarged in their use by publishing, on the library bulletin, the works in the library that illustrate important events, after the admirable plan initiated by Mr. Foster, of Providence.