REVIEWS. 
Porutar Prystotocy.—l. A Manual of Animal Physiology, 
for the use of Non-medical Students. By Joun Suea, 
M.D. London: Churchill.—2. 4 Manual of Popular 
Physiology ; being an attempt to explain the Science of 
Life in Intellectual Language. By Henry Lawson, M.D. 
London: Hardwicke. 
Tue publication of two manuals almost simultaneously, 
devoted to the subject of physiology and for the istruction 
of unprofessional persons, is certainly a subject for congratu- 
lation. Of all the departments of human knowledge ‘which 
the recent progress of natural science has systematised and 
made available for the practical use of mankind, physiology 
is undoubtedly the most important. It deals with the facts 
and laws of life—than a knowledge of which there is nothing 
more important to man. Just as he has gained a knowledge 
of the conditions that influence his life, has he become more 
civilised, more healthy, more moral, and more religious. In 
utter ignorance of the laws of hfe no man can hve. The 
facts with which he becomes instinctively acquainted serve 
him, in his barbarous and civilised state, to maintain his 
existence and even increase his race; but it is in those con- 
ditions of society where men are taught those laws of life 
which are the result of sufficient investigation, that we can 
alone anticipate the healthiest existence and the highest 
moral and religious development. It has been only within 
the present century that physiology, by embracing the sta- 
tistics of life and death in large communities of | men, and 
tracing minutely, with the aid of the micr oscope, the minute 
details of the changes which go on in the system to produce 
these grand results, has been in a position to claim the atten- 
tion of man. It now comes forth with an authority which 
ought to compel its principles to be listened to and its pre- 
cepts to be taught to all who have an interest in health and 
life. We would here especially suggest to those who are en- 
