suggestion slips, and from these may be learned the serial numbers by which cards may be ordered. In the United States several of the great city libraries act as depots for storing whole sets of the cards, which librarians of other libraries may consult instead of proof sheets. This card distribution method has thus been dwelt upon as it has as yet no analogue in the United Kingdom, and it is to be hoped that some judiciously chosen great British libraries may act as depots for Library of Congress and other cards. Their use would save thousands of pounds to British libraries, as well as set free for other library purposes the hundreds of cataloguers in hundreds of different libraries who are all engaged in the wasteful task of cataloguing the very same books. Other libraries which issue printed cards are the Institute International de Bibliographie at Brussels, the Concilium Bibliographicum, Zurich, the John Crerar Library, Chicago, and Pittsburgh Library. About ninety per cent. of the municipal library books in the United States are covered by the Library of Congress cards; therefore a certain number of cards have still to be made by the individual libraries; and in English libraries practically all the card catalogues are so made. In some cases the cards are made by mounting entries from the periodical list of additions or bulletin, but usually the cards are written, hand-printed or typed. It is obvious that some system of card distribution from an authoritative centre is badly needed in the United Kingdom as a measure of mere economy.