INTERNATIONAL SCIENTIFIC SERIES. 



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1. FORMS OF WATER. Kv Prof. John Tyndall. $1.50. 



2. PHYSICS AND POLITICKS. Bv W. Bagehot. $1.50. 



3. FOODS. Bv Edward Smith. M.' D., LL. B., ¥. R. S. $1.75. 



4. MIND AND BODY. Bv Alexander Bain, LL. D. $1.50. 



5. THE STUDY OF SOCIOLOGY. Bv Herbert Spencer. $1.50. 



6. THE NEW CHEMISTRY. Bv Prof. Josiah P. Cooke. Jr. $2.00. 



7. THE CONSERVATION OF ENERGY. Bv Prof. Balfolr Stewart. $1.50. 



8. ANIMAL LOCOMOTION. By J. B. Pettigkew, M. D. $1.75. 



9. RESPONSIBILITY IN MENTAL DISEASE. By H. MUdsley, M. D. 



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10. THE SCIENCE OF LAW. Bv Prof. Sheldon Amos. $1.75. 



11. ANIMAL MECHANISM. By E. J. Maret. 117 Illustrations. $1.75. 



12. CONFLICT BETWEEN RELIGION AND SCIENCE. By J. W. Draper, 



M.D. $1.75. 



13. THE DOCTRINE OF DESCENT, AND DARWINISM. Bv Prof. O. Schmidt. 



$1M. 



14. THE CHEMISTRY OF LIGHT AND PHOTOGRAPHY. By Dr. Hermann 



Vogel. 100 Illustrations. $2.00. 



15. FUNGI ; their Nature, Influence, and Uses. By M. C. Cooke, LL. D. Edited 



by M. J. Berkeley. 109 Illustrations. $1.5u. 



16. THE 'LIFE AND GROWTH OF LANGUAGE. Bv Prof. W. D. Whitney, of 



Yale College. $I.,50. 



17. MONEY AND THE MECHANISM OF EXCHANGE. By W. Stanley 



Jevons, M. a.. F. R. S. $1.75. 



18. THE NATURE OF LIGHT. By Dr. E. Lommel. S8 Hlustrations and a Plate 



of Spectra in Chromo-lithographv. $2.00. 



19. ANIMAL PARASITES AND MESSMATES. By Prof. M. Van Beneden. 



&;3 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"RELATI0N lO MUSIC. By Prof. Pieteo 



Blaserna. Numerous Woodcuts. $1.50. 



23. STUDIES IN SPECTRUM ANALYSIS. Bv J. N. Lockyer. $2.50. 



24. A HISTORY' OF THE GROWTH OF THE" STEAM-ENGINE. By Robert 



H. TnrRSTON. A. M.. C. E. 163 Illustrations. $2.50. j 



25. EDUCATION AS A SCIENCE. Bv Alex. Bain. LL.D. $1.75. 



26. MODERN CHROM.ATICS. By Prof. 0. N. Rood. 130 original Illustrations. |2.00. ! 



27. THE HUMAN SPECIES. Bv A. De Quatrefages. .i^'2.00. 



2S. THE CRAY'FISII : An Introduction to the Study of Zoology. By Prof. T. H. 

 Huxley. S2 Illustrations. $1.75. 



29. THE ATOMIC THEORY'. By Ad. Wuetz, Membre de Tlnstitut, etc. Trans- 



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30. ANIMAL LIFE AS AFFECTED BY THE NATURAL CONDITIONS OF | 



EXISTENCE. By Prof. Karl Semper. $2.00. \ 



31. SIGHT : An Exposition of the Principles of Monocular and Binocular Vision. By i 



Joseph Le CoNTE, LL. D. With numerous Illustrations. $1..5o. 



32. GENERAL PHYSIOLOGY OF MUSCLES AND NERVES. By Dr. I. Rosen i 



THAL. With 75 Woodcuts. $1.50. I 



33 ILLUSIONS : A Psvchological Studv. Bv James Sfllt. $1.50. 

 34. THE SUN. By C. A. Young. Ph.'D., LL. D.. Professor of Astronomy in the 



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