Scientifie Publications. 
THE HUMAN SPECIES. By A. De Quarreraaes, 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 racea, present human races, and the physi- 
eal and psychological characters of mankind. 
STUDENTS’ TEXT-BOOK OF COLOR; or, MODERN CHROMAT- 
ICS. With Applications to Art and Industry. With 130 Original Dlus- 
trations, and Frontispiece in Colors. By Oepen N, Roop, Professor of 
Physics in Columbia College. 12mo, cloth, $2.00. 
“Tn 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 himscif an accom- 
we artist as well as an authoritative expounder of science.”—Hdinburgh 
, October, 1879, in an article on “* The Philosophy of Color.” 
EDUCATION AS A SCIENCE. By Avexanver Barn, LL.D. 12mo, cloth, 
$1.7. 
“ This work must be pronounced the most 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 
land."—New York Sun. 
A HISTORY OF THE GROWTH OF THE STEAM-ENGINE. By 
Roserr H. Tuurston, A. M., C. E., Professor of Mechanical Engineering 
In the Stevens Institute of Technology, Hoboken, N. J., etc. With 163 
Tllustrations, inclading 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 ia 
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 wil 
agroe that it could have ano more amusing and intelligent historian than our 
author.”—Bosion Gazette. 
STUDIES IN SPECTRUM ANALYSIS. By J. Norman Lockyer, F.R.S., 
Correspondent of the Institute of France, etc. With 60 Illustrations, 12mo, 
cloth, $2.50. 
“The study of spectrum avalysis is one fraught with a peculiar 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 page, never flagging in interest in the matter before him, nor putting down 
she book until the last page is reached.”—MNew York Huening Hupress. 
D. APPLETON & CO., Publishers, 
as 1, 3, & 5 Bony Street, New Yorx. 
