MEETING OF CORRESPONDING SOCIETIES. buried in these Transactions and Journals, information which cannot be obtained from any other sources. A classical instance may be men- tioned of Mendel's work lying unknown for over thirty years. Methods.—Some suggestions as to methods may be put forward. The British Association should supply index-slips to each society. The societies should undertake to catalogue (under Subjects and Authors) by means of such slips the more important papers and notes which have been published in their journals during the whole course of their existence. In doing this it should be borne in mind that even short papers may be of great importance as containing local facts or giving suggestions for future work. And the active officers of each society would be the best judges of the value of such papers and notes. The index-slips should then be forwarded to an expert bibliographer appointed by the British Association. Each society should also furnish full information as to the titles and mode of publication of their Journals and other works published by them, together with notification of such libraries as are known to contain these books. The Bibliography might be published in two forms:— (1) Ordinary book form printed on both sides of the paper. (2) Slip-index form. By means of the second mode of publication each society would be able to obtain an index of its own publications separately from the complete bibliography. As many societies have acquired extensive libraries by exchange, such a bibliography as the one suggested would be an invaluable adjunct to their catalogue of publications. Each society whose publica- tions are thus indexed might be asked to subscribe for at least one copy of the bibliography, and inasmuch as this would serve in many cases as an index catalogue to their own libraries, doubtless a very considerable number of individual members would also subscribe. And a great number of public libraries, and libraries of societies, both here and in America, would also subscribe, so that in all probability the publication of the bibliography would pay for itself. Although scientific periodicals other than those published by societies have been excluded from our scheme, the publishers of important scientific journals should be approached in order to see if it would be possible to extend the bibliography in this direction. We merely put these terse suggestions forward as a basis for future discussion. The full working out of the scheme could be elaborated later. But we are fully impressed with the importance and interest of the work. Wm. Cole, Hon. Secretary and Curator of the Essex Museum of Nat. Hist. Henry Whitehead, Assistant Curator.