428 
EXTRACTS FROM EXCHANGES. 
plete recovery, with a little cicatricial band, easily perceptible, 
alongside the tract of the oesophagus.— {Ibid.') 
A Case of Caries of the Incisors in a Horse [By 
H. Cornevin and Lesbre ].—This common disease of the molars 
seems to be very rare in incisors, and the literature on the sub¬ 
ject is exempt from mentioning it. This case was sent to the 
authors from Chili, and was well characterized. Starting at the 
neck of the teeth, it extended deep on the labial faces, and was 
more marked on the central than the lateral teeth. The caries 
spread up to the table but this remained unharmed. On the 
buccal surface the diseased process was still limited. The 
roots remained healthy.— {Journ. of Zootech .) 
Rupture of the Rectum in a Horse whiee CAST[i?y 
M. PorcheveI\ .—Among the accidents met in casting, rupture 
of the rectum is not very common. In this case the animal, 
thrown to be fired for a spavin, was cast according to the classi¬ 
cal rules, and with the best of care. During the operation he 
struggled two or three times. Towards its end, after a violent 
contraction, a red cylindrical mass protruded through the anus: 
it was the inverted rectal mucous membrane. The animal was 
made to rise and the hernia reduced, but another effort of the ani¬ 
mal pushed it out again, it tore and allowed the floating colon 
to pass through the laceration. The animal was ultimately de¬ 
stroyed. At the post-mortem it was found that the laceration 
of the entire thickness of the rectum existed about 15 inches 
from the borders of the anus, on the inferior wall of the rectum, 
and measured about ten inches in length.— (Ibid.) 
Tuberculosis of the Rachidian Canal in a Cow [By 
M. Morot ].—This is the relation of a post-mortem made 011 an 
animal affected with generalized tuberculosis, in which the 
lungs, the bronichal and mediastinal glands, the liver and the 
spleen were found to contain numerous tuberculous deposits. 
When the carcass was dressed and cut in its entire length, an 
extensive tuberculization of the second dorsal vertebra was ex¬ 
posed, spreading more on the right than on the left. The 
spongy part of the body, of the annular part and of the spinous 
process was extensively infiltrated with tuberculous substance ; 
it is a greyish substance, more commonly yellowish, constituted 
by tuberculous granulations. The calibre of the rachidian canal 
is somewhat modified. There were no other lesions in the bony 
system. During life it had been observed that the animal was 
difficult to fatten, ate well, had difficulty in getting up, and it 
was only with great efforts that she was able to stand. Very 
