AMERICAN VETERINARY COLLEGE. 
379 
of puffiness, which suggested a softening of ligamentous struc- 
showed on the side, where it was continuous with the tendon, an 
irregular red line of demarcation, with the beginning of a slough¬ 
ing in the neurotic tendon. The articular surface of the os 
corona, corresponding to the os sesamoid, presented an ulcerated 
spot of the size of the head of a shawl pin. 
RACHITIC HORSE—OPERATIONS FOR SQUIRROUS CORD—FRAC¬ 
TURE OF DORSAL VERTEBRAE. 
By the Same. 
The history of this case is interesting on account of the ex¬ 
tent of the lesions that were found at the post-mortem, and which 
tend to corroborate the theory that in many cases of fracture of 
the vertebrae, during the struggles of an operation, the accident is 
due principally to a predisposition in the patient, resulting from 
an already existing diseased condition of their bones. 
A gray gelding, some 11 years old, was suffering with a small 
champignon of the left side, which, however, had never interfered 
with his work, though it had made the horse unpleasant to his 
owner during the warm weather, on account of the discharge and 
of the odor resulting from it. For this reason the owner desired 
to have an operation performed, notwithstanding its various at¬ 
tendant dangers, of which he was thoroughly informed. The 
animal was accordingly prepared, on the morning of the 5th of 
November, receiving a seven drachms ball of chloral, and about 
two hours later was cast on the right side. The near leg was 
secured, and the operation performed in the usual manner, with¬ 
out any very violent struggling on the part of j the animal. The 
operation having been completed, and the hobbles removed, he 
rose to his feet, after some little interval of time, but without ap¬ 
parent difficulty, walked to his stall some thirty feet off, and 
proceeded to eat his breakfast. He had not been thus engaged 
more than ten minutes when he began to betray uneasiness, com- 
