The International Scientific Series — continued. 



XVI. The LIFE and GRO^T^TH of LANGUAGE. By William 



DwiRHT Whitney. Fifth Edition. 



XVII. MONEY and the MECHANISM of EXCHANGE. By 



W. Sta^t^ey Jevons, M.A., F.R.S. Eighth Edition. 



XVIII. The NATURE of LIGHT, with a General Account of 

 PHYSICAL OPTICS. By Dr. Euoene Lommet.. With 188 lUus- 

 trations and a Table of Spectra in (Siromo-lithography. Fourth Edition. 



XIX. ANIMAL PARASITES and MESSMATES. By Monsieur 

 Van Benepex. With 83 Illustrations. Third Edition. 



XX. FERMENTATION. By Professor Schutzbnbkrgeb. With 

 28 Illustrations. Fourth Edition. 



XXI. The FIVE SENSES of MAN. By Professor Bernstein. 

 With 91 Illustrations. Fifth Edition. 



XXII. The THEORY of SOUND in its RELATION to MUSIC. 



By Professor Pietro Blaserxa. With numerous Illustrations. Third 

 Edition. 



XXIII. STUDIES in SPECTRUM ANALYSIS. By J. Noeman 



LocKYER, F.R.S. With Six Photographic Illustrations of Spectra, and 

 numerous Engravings on Wood. Fourth Edition. 65. 6d. 



XXIV. A HISTORY of the GRO^WTH of the STEAM ENGINE. 



By Professor R. H. Thurston. With numerous Illustrations. Fourth 

 Edition. 



XXV. EDUCATION as a SCIENCE. By Alexander Bain, LL.D. 



Sixth Edition. 



XXVI. The HUMAN SPECIES. By Professor A. de QrAXREFAGES, 



Membre de I'lustitut. Fourth Edition. 



XXVII. MODERN CHROMATICS. With Application to Art and 

 Industry. By Ogdex N. Rood. Second Edition. With ISO original Illus- 

 trations. 



XXVIII. The CRAYFISH : an Introduction to the Study of Zoology. 

 By T. H. Huxley, F.R.S. Fourth Edition. With 82 Illustrations. 



XXIX. The BRAIN as an ORGAN of MIND. By H. Charlton 



Bastian, M.D. Thu-d Edition. With 184 Illustrations. 



XXX. The ATOMIC, THEORY. By Professor A. Wurtz. Trans- 

 lated by E. Cleminshaw, F.C.S. Fifth Edition. 



XXXI. The NATURAL CONDITIONS of EXISTENCE as 

 they affect Animal Life. By Karl Semper. Third Edition. 

 With 2 Maps and 106 Woodcuts. 



London: KEGAN PAUL, TRENCH, & CO., 1 Paternoster Square. 



