Pigs, white poisoned in Virginia, black not, 265 Pipes from N. American mounds, 295 Plantain-eaters, 197 Plants, protective coloration in, 223 Plumage of tropical birds, 109 of humming-birds, 128 Polyalthea, tree with flowers on trunk, Polygonum bistorta, P. aviculare, 233 Ponera clavata, terrible sting of, 82 Prosthemadera in the Auckland Isles, Protective colours, theory of, 187 Pythons, 115 R. an earlier Solenopsis, genus of ants, 84 Sorby, Mr., on composition of chloro- South America, extinct fauna of, 336 an area of preservation of ancient Spices from equatorial forest-trees, 36 Spruce, Dr. Richard, on number of on inconspicuousness of tropical on use of aromatic secretions of Stainton, Mr., on insects attacking St. Helena, indigenous flowers of, 275 Sunda Islands and Japan once joined to Sun-birds, differences from humming- Sun's noonday altitude in Java and London compared, 6 SALVIN, MR. on the pugnacity of Sun's rays, heating effect of, 7 humming-birds, 134, 214 Sauba ant, 85 Saxifraga longifolia, 233 Sunrise in the equatorial zone, 22 Swifts, resemblances of to humming- birds, 152 Temperature of tropical and temperate Thaumastura cora, very pugnacious, 214 Timor and Flores, white-marked birds Tristan d'Acunha, bright coloured Tropical vegetation, concluding re- probable causes of its luxuriance Tropical birds, dull-coloured, 110 coloration of, 110 Tropics, limitation of, 3 aspects of animal life in, 121 Trunks, variety of, 31, 33 probable cause of flowering, 34 Twilight, short at equator, 21 Vanda lowii, 51 V. WARNING COLOURS, theory of, 189 Wave-lengths of coloured rays, 180 on Ajuga ophrydis, 223 West-Indian Islands, large and brilliant peculiarly coloured birds of, 262 White animals poisoned where black White colours influencing sense-percep- White colour doubly prejudicial to White tropical birds, 110 Wilson, Dr. on pottery from N. American Winds, influence of on temperature, 11 Woods from equatorial forest-trees, 36 LONDON R. CLAY, SONS, AND TAYLOR, BREAD STREET HILL. WORKS BY ALFRED RUSSEL WALLACE. Dr. Hooker, in his address to the British Association, spoke thus: :"Of Mr. Wallace and his many contributions to philosophical biology it is not easy to speak without enthusiasm; for, putting aside their great merits, he, throughout his writings, with a modesty as rare as I believe it to be unconscious, forgets his own unquestioned claim to the honour of having originated, independently of Mr. Darwin, the theories which he so ably defends." THE MALAY ARCHIPELAGO: THE LAND OF THE ORANG UTAN AND THE BIRD OF PARADISE. A Narrative of Travel. With Studies of Man and Nature. With Maps and Illustrations. Sixth Edition. Crown 8vo. 78. 6d. "A vivid picture of tropical life, which may be read with unflagging interest, and a sufficient account of his scientific conclusions to stimulate our appetite without wearying us by details. In short, we may safely say that we have never read a more agreeable book of its kind.”— Saturday Review. THE THEORY OF NATURAL SELECTION.-CONTRIBUTIONS TO. A Series of Essays. New Edition. Crown 8vo. 8s. 6d. The Saturday Review says: "He has combined an abundance of fresh and original facts with a liveliness and sagacity of reasoning which are not often displayed so effectively on so small a scale." With numerous Illustrations by ZWECKER, and Maps. THE GEOGRAPHICAL DISTRIBUTION OF ANIMALS, WITH A STUDY OF THE RELATIONS OF LIVING AND EXTINCT FAUNAS AS ELUCIDATING THE PAST CHANGES OF THE EARTH'S SURFACE. Two Vols. medium 8vo. 428. "The most valuable contribution to zoological literature that has appeared for many a day.” -Westminster Review. "A book which contains the most valuable information industriously put together, and certain to be of the highest importance to the zoological student."-Athenæum. "Altogether it is a wonderful and fascinating story."-Times. MACMILLAN AND CO., LONDON. |