a 
BOOK NOTICES, 377 
BOOT. INOW Ss, 
Ture New Text Book or Puysics: By Le Roy C. Cooley, Ph. D.: pp. 317, 12 
mo. : Chas. Scribner’s Sons, New York, 1880. 
Doctor Cooley is Professor of Physics and Chemistry in Vassar College, and 
this little work is the result of his experience as a teacher and an investigator. It 
is really a second edition of his Text Book of Natural Philosophy, published in 
1868. But he has so materially changed the tone of the work, by the introduc- 
tion of the ‘‘ principle of energy” into all departments, that he has deemed it 
proper to give it a new and distinctive title. At the same time much new matter 
has been introduced, bringing the work fully down to the most advanced scien- 
tific applications of electricity and the most recent discoveries in other depart- 
ments of science. 
The work seems to be thoroughly systematized and adapted to the wants of 
both teachers and pupils. A very noticeable feature is the summing of principal 
topics and problems at the close of each chapter, for use in reviewing. The 
illustrations are numerous and new, and the publishers have bestowed much pains 
upon the mechanical part of the work. 
THE UNITED STaTES GOVERNMENT; By George N. Lamphere: pp. 297, Octavo: 
‘J. B. Lippincott & Co., Philadelphia, Pa., 1880; $3. 
The author of this valuable work has for several years occupied a position 
in the treasury department at Washington, which has given him excellent facili- 
ties for familiarizing himself with the workings of the various branches of the 
government, even in their minutest details, and the information thus gained he 
imparts to his readers through the pages of the above named volume, in a clear 
and succinct manner. He has exercised excellent judgment in selecting and ar- 
ranging the subjects treated, and has thereby compiled a work which contains 
interesting and useful information for all classes. Beginning with the Declara- 
tion of Independence and the Constitution of the United States, with its amend- 
ments, he takes up and describes fully the Legislative, Executive and Judiciary 
departments with all their sub-divisions, including the Department of State, of 
the Treasury, War, Navy, Interior, Post Office, Justice and Agriculture, the du- 
ties of all the principal officers, the organization of their offices, the manner of 
procedure in the different bureaus, the rules and regulations of the various 
branches, the origin and history of each department, the pay of officers, fees al- 
lowed and a multitude of facts on all points connected with the manner of trans- 
acting government business, far too numerous to be mentioned here. 
To give an idea of the scope of the work, we will say that over one hun- 
dred pages are devoted to a description of the Treasury department and the du- 
