HEREDITARY GENIUS: An Inquiry into its Laws and Consequences. By FRANCIS GALTON, F.R.S. 8vo. 12_s._ Mr. Darwin, in his ‘Descent of Man’ says:--“We know, through the admirable labours of Mr. Galton, that genius, which implies a wonderfully complex combination of high faculties, tends to be inherited.” ON COMPARATIVE LONGEVITY IN MAN AND THE LOWER ANIMALS. By E. RAY LANKESTER, B.A. Crown 8vo. 4_s._ 6_d._ LONDON: MACMILLAN AND CO. New and Cheaper Edition, crown 8vo. 7_s._ 6_d._ PROF. HUXLEY’S LAY SERMONS, ADDRESSES, AND REVIEWS. CONTENTS:--Emancipation, Black and White--A Liberal Education--Scientific Education--Study of Zoology--The Physical Basis of Life--Scientific Aspects of Positivism--On a Piece of Chalk--The Origin of Species, &c. [_This Day._ ESSAYS SELECTED FROM PROFESSOR HUXLEY’S LAY SERMONS, ADDRESSES, AND REVIEWS. Crown 8vo. 2_s._ MR. A. R. WALLACE’S ‘MALAY ARCHIPELAGO.’ The Land of the Orang-Utan and the Bird of Paradise. A Narrative of Travel, with Studies of Man and Nature. 2 vols. crown 8vo. with 9 Maps and upwards of 50 Illustrations, price 24_s._ [_Second Edition._ HABIT AND INTELLIGENCE, IN THEIR CONNECTION WITH THE LAWS OF MATTER AND FORCE. A Series of Scientific Essays. By JOSEPH JOHN MURPHY. Two vols. 8vo. 16_s._ FORCE AND NATURE. ATTRACTION AND REPULSION. The Radical Principles of Energy graphically discussed in their Relations to Physical and Morphological Development. By C. F. WINSLOW, M.D. 8vo. 14_s._ A PHYSICIAN’S PROBLEMS. By CHARLES ELAM, M.D., M.R.C.P. CONTENTS:--Natural Heritage--On Degenerations in Man--On Moral and Criminal Epidemics--Body v. Mind--Illusions and Hallucinations--On Somnambulism--Reverie and Abstraction. Crown 8vo. price 9_s._ LONDON: MACMILLAN AND CO. BEDFORD STREET, COVENT GARDEN, LONDON. _April, 1871._ _MACMILLAN & CO.’S GENERAL CATALOGUE of Works in the Departments of History, Biography, Travels, Poetry, and Belles Lettres. With some short Account or Critical Notice concerning each Book._ SECTION I. HISTORY, BIOGRAPHY, and TRAVELS. *Baker (Sir Samuel W.).*--THE NILE TRIBUTARIES OF ABYSSINIA, and the Sword Hunters of the Hamran Arabs. By SIR SAMUEL W. BAKER, M.A., F.R.G.S. With Maps and Illustrations. Fourth and Cheaper Edition. Crown 8vo. 6_s._