INTERNATIONAL SCIENTIFIC SERIES.

NOW READY. In 12mo, and bound in cloth. 1. FORMS OF WATER. By Prof. John Ttndall. $1.50. 2. PHYSICS AND POLITICS. By W. Bageuot. $1.50. 3. FOODS. By Edward Smith, M. D., LL. B., F. K. S. $I.T5. 4. MIND AND BODY. By Alexander Bain, LL.D. $1.50. 5. THE STUDY OF SOCIOLOGY. Bv Herbert Spencer. $1.50. 6. THE NEW CHEMISTRY. By Prof. .Tosiah P. Cooke, Jr. .$2.(»0. 7. THE CONSERVATION OF ENERGY. By Prof. Balfour Stewart. $1.50. 8. ANIMAL LoroMdTION. By J. B. Pettigrew, M. D. $1.75. y. RESPONSIBILITY IN MENTAL DISEASE. By U. Maudsley, M. D. $1.50. 10. THE SCIENCE OF LAW. By Prof. Sheldon Amos. $1.75. 11. ANIMAL MECHANISM. By E. J. Marey. 117 Illustrations. $1.75. 12. CONFLICT BETWEEN RELIGION AND SCIENCE. By J. W. Draper, M.D. $1.75. 13. THE DOCTRINE OP DESCENT, AND DARWINISM. By Prof. O. ScusiroT. $1.50. 14. THE CHEMISTRY OF LIGHT AND PHOTOGRAPHY. By Dr. Hermann Vogel. 100 Illustrations. $2.00. 15. FUNGI ; their Natiu-e, lufluenoe, and Uses. By M. C. Cooke, LL. D. Edited by M. J. Berkeley. KIO Illustrations. $1.50. 16. THE LIFE AND GROWTH OF LANGUAGE. By Prof. W. D. Whitney, of Yale College. $1.50. 17. MONEY AND THE MECHANISM OF EXCHANGE. By W. Stanley Jetons, M. a., F. R. S. $1.75. 18. THE NATURE OF LIGHT. By Dr. E. Lommel. 88 Illustrations and a Plate of Spectra in Chromo-lithography. $2.00. 19. ANIMAL PARASITES AND MESSMATES. By Prof. M. Van Beneden. 83 Illustrations. $1.50. 20. ON FERMENTATIONS. Bv P. Schutzenberger. $1.50. 21. THE FIVE SENSES OF MAN. Bv Prof. J. Bernstein. $1.75. 22. THE THEORY OF SOUND IN ITS'RELATION TO MUSIC. By Prof. Pietro Blaserna. Numerous Woodouts. $1.50. 23. STUDIES IN SPECTRUM ANALYSIS. By J. N. Lookyer. $2.50. 24. A HISTORY' OF THE GROWTH OF THE STEAM-E:NGINE. By Robert H. Thurston, A. M.. C. E. 163 Illustrations. $2.50. 25. EDUCATION AS A SCIENCE. By Alex. Bain, LL. D. $1.75. 26. MODERN CHROM.A.TICS. By Prof. O. N. Rood. 130 original Illustrations. $2.00. 27. THE HUMAN SPECIES. Bv A. De Qitatrefages. .f'i.OO. 28. THE CRAYFISH: An Introduction to the Study of Zoology. By Prof. T. H. Huxley. 82 Illustrations. $1.75. 29. THE ATOMIC THEORY'. By Ad. Wuetz, Membre de Tlnstitut, etc. Trans- lated bv E. Cleminshaw. .$1..5(>. 30. ANIMAL LIFE AS AFFECTED BY THE NATURAL CONDITIONS OP EXISTENCE. By Prof. Karl Semper. $2.00. 31. SIGHT: An Exposition of the Principles of Monocular and Binocular Vision. By Joseph Le Conte, LL.D. With numerous Illustrations. $1.50. 82. GENERAL PHYSIOLOGY' OF MUSCLES AND NERVES. By Dr. I. Rosen- thal. With 75 Woodcuts. $1.50. 33 ILLUSIONS: A Psychological Study. By James Sully. $1.50. Si. THE SUN. By C. A. Y'oung, Ph. D., LL. I)., Professor of Astronomy in the College of New Jersey. With numerous Illustrations. $2.00. Aaiy Tolnme sent by mail, post-paid, on receipt of price.

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