No.413.] REVIEWS OF RECENT LITERATURE. 403 
be true, there is inconsistency in some questions in the first lessons ; 
for example: “Is there evidence that Paramcecia can breathe? " 
“Has the Amceba a stomach?” Such questions are meaningless 
unless the pupil has some scientific knowledge of structure and func- 
tions in higher forms. 
On the whole, the spirit and plan of most of the lessons may be 
commended. Many teachers will welcome this as a laboratory guide 
which aims to meet the popular demand for less study of compara- 
tive anatomy and more about animal life in secondary education. 
M. A. B. 
Human Physiology. — Dr. Wm. D. Zoethout’s translation of 
Schenck and Giirber’s Human Physiology: places within reach of 
the English-reading student one of the best of the shorter German 
physiologies. The translation is from the second German edition 
and follows the original closely. After a brief introduction on gen- 
eral physiology, the subject-matter is arranged under three heads 
— metabolism, the transformation and setting free of energy, and 
reproduction and development. The treatment is as modern as is 
consistent with general soundness. "Thus we are told that “a solu- 
tion tastes the more sour the greater the number of hydrogen atoms 
replaceable by metals contained in the unit of volume," a statement 
which includes all that is up to date without involving the reader in 
the dissociation hypothesis. Although the text of the book has been 
compiled with great conciseness and care, it is to be regretted that 
the illustrations are so inadequate. Thus the figure showing the 
general anatomy of the ear as copied from Helmholtz, and the 
positively inaccurate drawing of the cross-section of the lamina 
spiralis membranacea are scarcely justifiable. Nor is there good 
reason why the olfactory epithelium should be illustrated by a figure 
from Max Schultze, when such work as that done by Retzius, Van 
Gehuchten, and others is so readily accessible. Such defects, 
however, are small compared with the merits of the volume, which 
Should be in the hands of every medical student and every teacher 
of elementary physiology. P. 
Korschelt and Heider's Embryology of Invertebrates. The 
fourth part of the English edition of Korschelt and Heider’s En- 
‘Schenck, F., and Gürber, A. Outlines of Human Physiology. Translated 
from the second German edition by Wm. D. Zoethout. New York, Henry Holt 
& Co, 1900. viii + 339 pp. 
