94 Tue MICROSCOPE. 
Foop MATERIALS AND THEIR ADULTERATIONS. By Ellen H. Rich- 
ards, Instructor in Sanitary Chemistry in the Massachusetts In- 
stitute of Technology. Small 8 vo., pp. 200. Boston, Estes & 
Lauriat. 1886. 
This manual contains the result of some year’s experience 
in laboratory work, determining the extent and character of the 
adulterations of food materials. Such subjects as water, tea, 
coffee, sugars, milk, butter, canned goods, and materials used 
in cooking, are discussed and their substitutes given with the 
accompanying effects. 
The subject of “ adulterations” is indeed a large one and 
should receive the most thoughtful attention of sanitarians. It 
is a subject that concerns the welfare of the whole people. 
MANUAL OF THE BOTANY OF THE ROCKY MOUNTAIN REGION. By 
John M. Coulter, Ph. D., Prof. of Botany in Wabash College. 
Ivison, Blakeman & Co. 1885. 8 vo. pp. 450. 
In this volume are given all the known flowering plants and 
vascular cryptogams between the 100th meridian and the west- 
ern slope of the Rocky Mountains, and between the latitudes of 
Southern Colorado and British America. Travelers and residents 
in that region can now readily identify the plants they find. It 
is after the manner of Dr. Gray’s Manual of the Botany of the 
Eastern United States. 
HISTOLOGICAL MerHops. By Simon H. Gage, B. S., Assistant Pro- 
fessor of Physiology, Cornell University. 
This manual of methods of work is justin the line of help 
we all so much need. The question is not what shall we do, for 
we know of too much to do already; it is rather, how shall we 
do it. Such help as Prof. Gage gives us go a great ways toward 
answering the question so often asked us by our students and 
still oftener asked by ourselves. 
Prof. Gage gives a large number of methods for examining 
various organs and tissues of the body, as well as giving much 
aid in certain branches of forensic medicine. All of these 
methods come directly from Prof. Gage’s hand and can be relied 
upon as correct. Address the author at Ithaca, N, Y. 
