29 
THE HUMAN BODY, IN HEALTH AND DISEASE. 
In disease they are proved to be present in the blood “ in in- 
creased numbers thus, “ Gulliver, Davy, and Auccli, have ob- 
served them in unusual quantities in inflammatory affections, and 
especially in such as are attended with suppuration. Mr. Siddall 
and Mr. Gulliver have repeatedly observed them in vast numbers 
in the horse, especially when this animal has been suffering from 
influenza.” 
With these extracts, which insensibly have become lengthy be- 
yond our anticipations, we close our notice of a work — in its in- 
choate state — of an exceedingly pleasing and interesting character ; 
— interesting, we repeat, equally to the veterinary and human sur- 
geon, and rendered, so far as it has gone, doubly so to both by a 
number of coloured drawings, evincing great pains-taking and 
fidelity on the part of the artist, and tending most materially to the 
elucidation of the text, as well as to the value of the books to 
which they are attached. 
Extracts from Domestic &. Foreign Journals, Veterinary, 
Medical, Agricultural, Sporting, &c. 
An Essay on Chronic Podotrocholitis. 
By Dr. BRAUELL, Professor at the University of Kasan. 
Analysed and translated by M. S. Verheyen. 
[Continued from vol. xix, page 535.] 
ACCORDING to Turner*, the primary source of navicular lame- 
ness lies in the too absolute and prolonged rest which horses enjoy 
in the stable; he considers that this destroys the elasticity of the 
frog, and induces contraction of the hoof. Turner divides contrac- 
tion into simple or general, and partial or occult. The first variety 
consists in a diminution of the transverse diameter ; the second is 
manifested in the concavity, thickness, and hardness of the sole, 
in the ascent and hardness of the frog, the depth of the commis- 
sures, the height of the heels and quarters, the thickness and per- 
pendicular direction of the wall, the contraction of this part 
towards the region of the quarters, and the weakening of the in- 
ternal quarter. Turner is of opinion that one or the other of these 
varieties of contraction always precede chronic podotrocholitis ; 
* Veterinarian, vol. ii. 
