A List of XXIV. A HISTORY OF THE GROWTH OF THE STEAM ENGINE. By Professor R. H. Thurston. With numerous Illustrations. Third Edition. Crown 8vo. cloth, price 6s. 6d. XXV. EDUCATION AS A SCIENCE. By Alexander Bain, LL.D. Fourth Edition. Crown 8vo. cloth, price $s. XXVI. THE HUMAN SPECIES. By Prof. A. De Quatrefages. Third Edition. Crown 8vo. cloth, price $s. XXVII. MODERN CHROMATICS. With Applications to Art and Industry. By Ogden N. Rood. With 130 original Illustrations. Second Edition. Crown 8vo. cloth, price $s. XXVIII. THE CRAYFISH : an Introduc- tion to the Study of Zoology. By Professor T. H. Huxley. With 82 Illustrations. Third Edition. Crown 8vo. cloth, price $s. XXIX. THE BRAIN AS AN ORGAN OF MIND. By H. Charlton Bastian, M.D. With numerous Illustrations. Third Edition. Crown 8vo. cloth, price 5-r. XXX. THE ATOMIC THEORY. By Prof. Wurtz. Translated by G. Clemin- shaw, F.C.S. Third Edition. Crown 8vo. cloth, price 5-r. XXXI. THE NATURAL CONDITIONS OF EXISTENCE AS THEY AFFECT ANIMAL LIFE. By Karl Semper. With 2 Maps and 106 Woodcuts. Third Edition. Crown 8vo. cloth, price $s. XXXII. GENERAL PHYSIOLOGY OF MUSCLES AND NERVES. By Prof. J. Rosenthal. Third Edition. With Illustrations. Crown 8vo. cloth, price 5-r. XXXIII. SIGHT : an Exposition of the Principles of Monocular and Binocular Vision. By Joseph Le Conte, LL.D. Second Edition. With 132 Illustra- tions. Crown 8vo. cloth, price $s. XXXIV. ILLUSIONS : a Psychological Study. By James Sully. Second Edition. Crown 8vo. cloth, price 5*. XXXV. VOLCANOES : WHAT THEY ARE AND WHAT THEY TEACH. By Professor J. W. Judd, F.R.S. With 92 Illustrations on Wood. Second Edition. Crown 8vo. cloth, price 5-r. XXXVI. SUICIDE : an Essay in Com- parative Moral Statistics. By Prof. E. Morselli. Second Edition. With Diagrams. Crown 8vo. cloth, price 5-r- XXXVII. THE BRAIN AND ITS FUNC- . TIONS. ByJ. Luys. Second Edition. With Illustrations. Crown 8vo. cloth, price 5.5-. XXXVIII. MYTH AND SCIENCE : an Essay. By Tito Vignoli. Crown 8vo. cloth, price 5-r. XXXIX. THE SUN. By Professor Young. With Illustrations. Second Edition. Crown 8vo. cloth, price $s. XL. ANTS, BEES, AND WASPS : a Record of Observations on the Habits of the Social Hymenoptera. By Sir John Lubbock, Bart. , M. P. With 5 Chromo- lithographic Illustrations. Sixth Edit. Crown 8vo. cloth, price $s. XLI. ANIMAL INTELLIGENCE. By G. J. Romanes, LL.D., F.R.S. Third Edition. Crown 8vo. cloth, price 5-r. XLII. THE CONCEPTS AND THEORIES OF MODERN PHYSICS. By J. B. Stallo. Second Edition. Crown 8vo. cloth, price 5-r. XLIII. DISEASES OF MEMORY : an Essay in the Positive Pyschology. By Prof. Th. Ribot. Second Edition. Crown 8vo. $s. XLIV. MAN BEFORE METALS. By N. Joly. Third Edition. Crown 8vo. cloth, price 5_r. XLV. THE SCIENCE OF POLITICS. By Prof. Sheldon Amos. Second Edit. Crown. 8vo. cloth, price $s. XLVI. ELEMENTARY METEOROLOGY. By Robert H. Scott. Second Edition. With numerous Illustrations. Crown 8vo. cloth, price $s. XLVII. THE ORGANS OF SPEECH AND THEIR APPLICATION IN THE FOR- MATION OF ARTICULATE SOUNDS. By Georg Hermann von Meyer. With 47 Woodcuts. Crown 8vo. cloth, price 5-r. XLVIII. FALLACIES : a View of Logic from the Practical Side. By Alfred Sidgwick. x Crown 8vo. cloth.
