VETERINARY PATHOLOGY AND SURGERY. 613 
10th inst. — The owner came to say the mare was better, 
and desired my father to attend ; but in a few hours a mes- 
sage was received to the effect that she was dead. 
Autopsy (Monday, July 11th). — Considerable tympanitis 
of the stomach and intestines, especially of the csecum and 
colon ; their contents were in a fluid state ; peritoneal and 
muscular coats healthy, as indeed was every part of the 
intestine, except at the junction of the colon and rectum. 
Here the bowel was impacted with a hardened substance 
which proved to be a calculus. In shape it closely ap- 
proaches that of th z frustum of a triangular pyramid, with 
all angularities rounded off ; its base is nearly equilateral, 
each side measuring about S \ in. ; slant height 4J in. ; 
weight 24| oz. troy; the general surface is smooth and 
polished, except at the centre of each face, where there is 
a small deep scabrous fossa or pit. The portion of intestine 
enveloping the calculus was in a sphacelated state. The 
opinion given to the owner was thus justified by the post- 
mortem appearances. I am aware that calculi of various 
shapes and sizes are frequently found in the stomachs of the 
cow and the larger intestines of the horse, but 1 have never 
before witnessed a complete impaction of the smaller intestines 
in the latter animal from the same cause. 
Case III. Amputation of Supernumerary Limb. — Our 
patient was a foal, three months old, having a supernumerary 
foot growing from the inner side of the fetlock joint of the off 
fore leg. The foot was, in miniature, beautifully formed, but 
had become elongated through want of pressure. Having 
cast the animal and secured the leg, as for the operation of 
neurotomy, two incisions through the skin were made (one 
on either side of the foot), meeting in a point superiorly and 
inferiorly, so that the whole incision resembled the figure of 
an ellipse placed vertically, and having either extremity of 
the major axis slightly prolonged. The foot was then 
carefully dissected out by my father, proper precaution being 
taken not to wound the capsular ligament of the joint, &c. 
One vessel was secured by ligature ; the edges of the wound 
were brought as closely together with the interrupted metallic 
suture as was fitting; a wet compress and bandage were 
placed upon the part ; and the animal was then allowed to 
rise and return to its dam in the pasture, the only treatment 
advised being the occasional application of cold water. The 
animal is progressing favorably. 
XLIII. 
41 
