6 THE AMERICAN SCIENCE SERIES, 
CHEMISTRY. By IRA REMSEN, Professor in the Johns Hop- 
kins University. 
Advanced Course. 8vo. (lx preparation.) 
The general plan of this work will be the same with that of 
the Briefer Course, already published. But the part in which 
the members of the different families are treated will be con- 
siderably enlarged. Some attention will be given to the lines 
of investigation regarding chemical affinity, dissociation, speed 
of chemical action, mass action, chemical equilibrium, thermo- 
chemistry, etc. The periodic law, and the numerous relations 
which have been traced between the chemical and physical 
properties of the elements and their positions in the periodic 
system will be specially emphasized. Reference will also be 
made to the subject of the chemical constitution of compounds, 
and the methods used in determining constitution. 
Introduction to the Study of Chemistry. 12mo. 389 pp. 
The one comprehensive truth which the author aims to make 
clear to the student is the essential nature of chemical action. 
With this in view, he devotes the first 208 pages of the book to 
a carefully selected and arranged series of simple experiments, 
in which are gradually developed the main principles of the sub- 
ject. His method is purely inductive ; and, wherever experience 
has shown it to be practicable, the truths are drawn out by 
pointed questions, rather than fully stated. Next, when the 
student is in a position to appreciate it, comes a simple account 
of the theory of the science. The last 150 pages of the book 
are given to a survey, fully illustrated by experiments, of the 
leading families of zzorganzc compounds. 
From ARTHUR W. WRIGHT, Professor in Yale College :—The student 
is not merely made acquainted with the phenomena of chemistry, but 
is constantly led to reason upon them, to draw conclusions from them 
and to study their significance with reference to the processes oj 
chemical action—a course which makes the book in a high degree dis- 
ciplinary as well as instructive. 
From Tuos. C. VAN Nuys, Professor of Chemistry in the Indiana 
University :—It seems to me that Remsen’s ‘‘ Introduction to the 
Study of Chemistry” meets every requirement as a text or class book. 
From C. Les MEEs, Professor of Chemistry in the Ohio University + 
—I unhesitatingly recommend it as the best work as yet published for 
the use of beginners in the study. Having used it, I feel justified in 
saying this much. ‘ 
