Physiology of the Domesticated Animals. 
881 
'or all the animals under consideration. The eye is an organ of 
■xtreme interest and importance in the horse, but the description 
riven is — although this does not appear to be specified — obviously 
;hat of the human eye. It is, in fact, supplied with only four rectus 
uuscles, which is correct as regards the eye of man ; of the fifth, 
)r posterior, rectus muscle, so-called, of the horse's eye there is no 
nention. 
The third and concluding part of the volume, dealing with the 
reproductive functions, though restricted to twenty pages, is well 
written, and embodies as clear an account of the subject as is, 
perhaps, to be found in any physiological work. The series of 
changes between impregnation and parturition does not come under 
discussion, as this appertains more particularly to the subject of 
embryology. 
The fact that the book is of American origin, the author being 
Professor of Comparative Physiology in the University of Pennsyl- 
vania, will serve to explain the use of certain terms and phrases 
scarcely current in Britain. The English farmer will not at the 
outset identify " fodder beets " with his own familiar mangel ; still 
less will he recognise sainfoin under the author's name — taken from 
the French — of esparcet. 
A word of approbation is called for regarding the upwards of 
400 illustrations, some of them coloured. It is true they are not 
original, but it is doubtful if the great majority of them do not for 
the first time make their appearance in a work which is well quali- 
fied to become popular in the ordinary acceptation of the term. The 
illustrations are throughout acknowledged to their authors, the 
names of whom are a guarantee of the correctness and reliability of 
their work. 
The coloured illustrations are a characteristic feature of the 
volume, inasmuch as they are introduced without the aid of plates. 
They are particularly well adapted to show the varying appearances 
presented by glands in their alternating periods of rest and activity. 
Amongst the structures thus delineated are the parotid gland, which 
is the largest of the glands whose function it is to pour saliva into 
the mouth ; the glands of the stomach, which secrete the gastric 
juice ; and the pancreas, or sweetbread, a large gland slung up in a 
flap of the covering membrane of the stomach, and discharging an 
important digestive juice into the intestine. 
What, years ago, Chauveau accomplished in popularising the 
anatomy of the domesticated animals, Dr. Meade Smith may now 
claim to have done in connection with their physiology. Produced 
avowedly as a text-book for veterinary and medical students and 
practitioners, this volume may confidently appeal to a still wider field 
of readers amongst agriculturists. Stock-breeders and stock-feeders 
who study its pages will do so with interest and profit. 
VOL. I. T. S. — 4 
