Scientific Publications. 



THE HUMAN SPECIES. By A. DE QUATREFAQES, Professor of Anthro- 

 pology in the Museum of Natural History, Paris. 12mo, cloth, $2.00. 



The work treats of the unity, origin, antiquity, and original localization of 

 the human species, peopling- of the globe, acclimatization, primitive man, forma- 

 tion of the human races, fossil human races, present human races, and the physi- 

 cal and psychological characters of mankind. 



STUDENTS' TEXT-BOOK OF COLOR ; or, MODERN CHROMAT- 

 ICS. With Applications to Art and Industry. With 130 Original Illus- 

 trations, and Frontispiece in Colors. By OGDEN N, ROOD, Professor of 

 Physics in Columbia College. 12mo, cloth, $2.00. 



"In this interesting book Professor Rood, who, as a distinguished Professor 

 of Physics in Columbia College, United States, must be accepted as a competent 

 authority on the branch of science of which he treats, deals briefly and succinctly 

 with what may be termed the scientific rationale of his subject. But the chief 

 value of his work is to be attributed to the fact that he is himself an accom- 

 plished artist as well as an authoritative expounder of science." Edinburgh 

 Seciew, October, 1879, in an article on " The Philosophy of Color." 



EDUCATION AS A SCIENCE. By ALEXANDER BAIN, LL. D. 12mo, cloth, 



$1.75. 



" This work must be pronounced the mo_st remarkable discussion of educa- \/ 

 tional problems which has been published in our day. We do not hesitate to 

 bespeak for it the widest circulation and the most earnest attention. It should 

 be in the hands of every school-teacher and friend of education throughout the 

 laud.' 1 J,~tw York Sun. 



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



ROBERT H. THTJRSTON, A. M., C. E., Professor of Mechanical Engineering 

 in the Stevens Institute of Technology, Hoboken, N. J., etc. With 163 

 Illustrations, including 15 Portraits. 12mo, cloth, $2.50. 



" Professor Thurston almost exhausts his subject ; details of mechanism are 

 followed by interesting biographies of the more important inventors. If, as is 

 contended, the steam-engine is the most important physical agent in civilizing 

 the world, its history is a desideratum, and the readers of the present work will 

 agree that it could have a no more amusing and intelligent historian than our 

 author." Boston Gazette. 



STUDIES IN SPECTRUM ANALYSIS. By J. NORMAN LOCKTEB, F. R. 8., 

 Correspondent of the Institute of France, etc. With 60 Illustrations. 12mo, 

 cloth, $2.50. 



" The study of spectrum analysis is one fraught with, a pecnliar fascination, 

 and some of the author's experiments are exceedingly picturesque in their re- 

 sults. They are so lucidly described, too. that the reader keeps on. from page 

 to pase, never flassins: in interest in the matter before him, nor putting down 

 the book until the last page is reached." New York Evening Express. 



D. APPLETON & CO., Publishers, 



1, 3, & 5 BOXD STREET, NEW YORK. 



