=MAMMALIA.= Rev. H. A. MACPHERSON. =MARINE SHELLS.= J. W. WILLIAMS. =MOSSES.= J. E. BAGNALL, A.L.S. =POND-LIFE (Insects).= E. A. BUTLER, F.Z.S. =POND-LIFE (Algæ, Diatoms, &c.).= T. S. SMITHSON. =POSTAGE STAMPS.= W. T. OGILVIE. =REPTILES.= C. HOPLEY. =SEAWEEDS, SHELLS, AND FOSSILS.= P. GRAY, and B. B. WOODWARD. =SILKWORMS.= E. A. BUTLER, F.Z.S. =TELESCOPE, THE.= J. W. WILLIAMS. SWAN SONNENSCHEIN & CO., LONDON. * * * * * The Young Collector Series. _Each Volume is very fully illustrated with practical woodcuts, and bound in flat cloth extra_, =1s.= _each_ (_post free_, 1_s._ 2_d._). "They contain just the kind and amount of information required.... It is not easy to understand how works like these, written by men of science in the various departments, can be made a commercial success. Certainly nothing but the enormous circulation which they well deserve can render them so."--_Knowledge._ "We have seen nothing better than this series. It is cheap, concise, and practical."--_Saturday Review._ "We are glad to call attention to this excellent series of handbooks, which deserve to be widely known.... We are glad to see the staff of the British Museum thus coming forward to make popular the stores of learning which they have.... The illustrations are uniformly good--far better than in many expensive books."--_Academy._ BUTTERFLIES, MOTHS, AND BEETLES. By W. F. KIRBY. CRUSTACEANS AND SPIDERS. By F. A. A. SKUSE. ANTS, BEES, DRAGON FLIES, EARWIGS, ETC. By W. H. BATH. REPTILES. By CATHERINE HOPLEY. MAMMALIA. By F. A. A. SKUSE. [_Shortly._ POND-LIFE. By E. A. BUTLER, F.Z.S. SILKWORMS. By E. A. BUTLER, F.Z.S. MOSSES. By JAS. E. BAGNALL, A.L.S. SEAWEEDS, SHELLS, AND FOSSILS. By PETER GRAY and B. B. WOODWARD. COINS AND TOKENS (ENGLISH). By LLEWELLYNN JEWITT, F.S.A. LONDON: SWAN SONNENSCHEIN & CO. * * * * * Transcriber's Notes: