SYDNEY Royal Society of New South Wales, May 5.—Annual Meeting.—Prof. Liversidge, F.R.S., President, in the chair.— The President stated that 27 new Members had been elected during the year, and the total number on the roll April 30 was 492. The Clarke Medal for the year 1886 had been awarded to Prof. L. G. de Koninck, M.D., of Liége, in recognition of his distinguished scientific attainments, and more particularly of his valuable contributions to our knowledge of the Palaeozoic fossils of New South Wales. During the year the Society held eight meetings, at which the following papers were read:-Presidential Address, by H. C. Russell, B.A., F.R.A.S.—Notes on flying-machines, by L. Hargrave.—On a system of accurate measurement by means of long steel ribands, by G. H. Knibbs. -Local variations and vibrations of the earth's surface, by H. C. Russell, B.A., F.R.A.S.—Some causes of the decay of the Australian forests, by Rev. P. MacPherson, M.A.—The history of floods in the Hawkesbury River, by J. P. Josephson, A.M.I.C.E.—The Ringal of the North-Western Himalaya, by Dr. Brandis, F.R. S. (communicated by Baron von F. Miiller, K.C.M.G., F.R.S.).—Notes on experiments in mounting the Amphiplcura pellucida in media having a higher refractive index than Canada balsam, by Dr. W. Morris, F.R.M.S.—Notes on the characters of the Adelong Reefs, by S. H. Cox, F.C.S., F.G. S.—Stone implements of the aborigines of Australia and some other countries, by Rev. P. MacPherson, M.A.—On a form of flying-machine, by L. Hargrave.—On a new form of anemometer, by H. C. Russell, B.A., F.R.A.S.—The Medical Section held eight meetings, at which eighteen papers were read, and the Microscopical Section eight, at which three papers were read. The number of donations received was 1420 volumes and pamphlets, and 310l. expended in the purchase of books, & c., for the library. The Society has issued the following list of subjects, with the offer of the Society's bronze medal and a prize of 25l. for each of the best researches if of sufficient merit:- Series vi. to be sent in not later than May I, 1887; (No. 20) on the silver ore deposits of New South Wales; (No. 21) origin and mode of occurrence of gold-bearing veins and of the associated minerals; (No. 22) influence of the Australian climate in producing modifications of diseases; (No. 23) on the Infusoria peculiar to Australia. Series vii., to be sent in not later than May I, 1888: (No 24) anatomy and life-history of the Echidna and Platypus; (No. 25) anatomy and life-history of Mollusca peculiar to Australia; (No. 26) the chemical composition of the products from the so-called Kerosene Shale of New South Wales.—The following Officers and Council were elected for the ensuing year:-President: C. Rolleston, C.M.G.; Vice-Presidents: H. C. Russell, B.A., F.R.A.S.; Dr. Leibius, M.A.; Hon. Treasurer: R. Hunt, F.G.S.; Hon. Sees.: Prof. Liversidge, F.R.S.; F. B. Kyngdon, F.R.M.S.; Council: Hon. Dr. C. K. Mackellar, A.M., M.L.C.; C. Moore, F.L.S.; P. R. Pedley, Dr. J. Ashburton Thompson, C. S. Wilkinson, F,G.S.; Dr. H. G. A. Wright.