The International Scientific /Sisrie*— (Continued.) 



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



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



18. THE NATURE OF LIGHT, with a General Account of Physical Optics. By 



Dr. Eugene Lommel. With 188 Dlustrations and a Table of Spectra in 

 Chromo-lithography. $2.00. 



19. ANIMAL PARASITES AND MESSMATES. By Monsieur Van Beneden. 



With83 DiuBtrations. $1.50. 



20. FERMENTATION. By Professor Schutzenbergeb. With 28 Illustrations. 



$1.50. 



21. THE FIVE SENSES OF MAN. By Professor Bebnstein. With 91 Illus- 



trations. $1.75. 



22. THE THEORY OF SOUND IN ITS RELATION TO MUSIC. By Pro- 



fessor PiETRO Blaserna. With numerous Illustrations. $1.50. 



23. STUDIES IN SPECTRUM ANALYSIS. By J. Norman Lockter, F. R. S. 



With 6 Photographic Dlustrations of Spectra, and numerous Engravings 

 on Wood. $2.50. 



24. A HISTORY OF THE GROWTH OF THE STEAM-ENGINE. By Pro- 



fessor R. H. Thurston. With 163 Illustrations. $2.50. 



25. EDUCATION AS A SCIENCE. By Alexander Bain, LL. D. $1.75. 



86. STUDENTS' TEXT-BOOK OF COLOR; Or, Modem Chromatics. With 

 Applications to Art and Industry. By Professor Ogden N. Rood, Colum- 

 bia College. New edition. With 130 Illustrations. $2.00. 



27. THE HUMAN SPECIES. By Professor A de Quatrefages, Membre de 



I'Institut. $2.00. 



28. THE CRAYFISH : An Introduction to the Study of ZoSlogy. By T. H. 



Huxley, F. R. S. With 82 Hlustrations. $1.75. 



29. THE ATOMIC THEORY. By Professor A. Wurtz. Translated by E. 



Cleminshaw, F. C. S. $1.50. 



30. ANIMAL LIFE AS AFFECTED BY THE NATURAL CONDITIONS OF 



EXISTENCE. By Karl Semper. With 2 Maps and 106 Woodcuts. $2.00. 



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

 By Joseph Le Conte, LL. D. With 1.32 Illustrations. $1.50. 



32. GENERAL PHYSIOLOGY OF MUSCLES AND NERVES. By Profespor 

 J. Rosenthal. With 75 Illustrations. $1.50. 



a3. ILLUSIONS : A Psychological Study. By James Sullt. $1.50. 



34. THE SUN. By C, A. Young, Professor of Astronomy in the College of New 

 Jersey. With numerous Dlustrations. $2.00. 



New York : D. APPLETON & CO., 1, 3, A 5 Bond Street. 



