570 
CALCULUS IN THE TEAT OF A COW. 
food, here and there, on the surface of the intestines. The peri- 
toneum was of a red colour, and inclosed a small quantity of 
liquid of the same hue, and of a strong sethereous smell. It was 
evidently the medicine that had been administered on the for- 
mer evening. 
After having detached the mass of intestines from the abdo- 
minal cavity, I opened the small intestine, commencing at the 
duodenum. I immediately found some ascarides, whose number 
increased as I advanced. About four and a half or five feet from 
the stomach, the intestine was of a vivid rose colour, and I 
perceived in it a small round aperture, resembling very much 
the lower orifice of the lachrymal canal. It was double, and 
communicated with a pouch situated between two folds of the 
mesentery. This pouch seemed to be of long standing — it was 
five or six inches long and four wide, and contained worms and 
indigested food. Its parietes were two lines in thickness, hard, 
rough, of a pale red colour, and owed their origin to the hyper- 
trophy and induration of the cellular tissue which united the two 
portions of the mesentery. At the upper part the parietes were 
thin, and perforated, and there were large spots of ecchymosis 
on the mesentery in the neighbourhood of the pouch. There 
were five or six worms in the stomach, and others below the 
pouch. There was not any morbid lesion in the other intes- 
tines. 
Rec . de Med. Vet., Fevrier 1837. 
RETENTION OF MILK IN A COW, OCCASIONED 
BY THE PRESENCE OF A CALCULUS IN THE 
CANAL OF THE LEFT POSTERIOR TEAT. 
By M. Duplenne, V.S. 
On the 10th of April, 1831, I was desired to look at a cow, 
five years old, which in preceding years had produced two 
calves without accident, and on the first of this month had had 
her third calf. Her milk had been gradually diminishing, and 
yesterday she became quite dry. 
The teats were hot and swelled — the mammillary vessels 
distended and very apparent — the mouth hot — the eyes red 
— the pulse hard and accelerated — the breathing also quick- 
ened — and her attitude and appearance expressing great suf- 
fering. 
