430 
ft. KAY, 
t 
Temperature, normal; pulse, 70; respiration, 24 ; cold sweat 
on the body; the near hind leg very cold; had no feeling when 
pricked with the point of a pin. The off hind leg showed colder 
than the body. As he was resting quietly, and free from ap¬ 
parent pain, we concluded to leave him till next morning before 
making a diagnosis, which could only be obtained after an ex¬ 
amination per rectum. 
Friday morning, November 2d—Found the horse standing. I 
made an examination per rectum, and found a peculiar pulsation 
in the posterior aorta, anterior to the bifurcation. The beat was 
strong, but rebounding, giving the sensation to the fingers of 
striking an obstruction, and being then thrown back again. The 
external iliacs were nearly normal in pulsation; the internal 
iliacs gave no pulsation, but felt considerably enlarged, and very- 
hard to the touch, with an irregular outline. This abnormal con¬ 
dition, it was suspected, was caused by an embolism, which was 
also the cause of the partial paralysis existing. 
Dr. Liautard then made an examination, and confirmed my 
diagnosis, and requested the class of senior students to take ad¬ 
vantage of this case, and make the examination, in order to 
become acquainted with the diseased condition of the arteries in 
question. Many of them did so, till the horse dropped down 
ao-ain. The owner called about this time, and an unfavorable 
prognosis was given him. He was recommended to have the 
animal destroyed, and, consenting to it, it was carried out, and a 
post mortem made, with the following results : 
A longitudinal section through the ribs, then laid over, ex¬ 
posed the abdominal cavity. The intestines, stomach, liver, etc., 
were removed. An opening was then made into the thoracic 
cavity, and the heart, with its chief blood vessels, examined, but 
nothing abnormal discovered. The posterior aorta, with its col¬ 
lateral branches, was next examined, and all found to be in a 
healthy condition. The external iliac arteries were also inspect¬ 
ed, but on reaching the internal iliacs, they were found both to 
be plugged by an embolism, extending on the left side through 
the entire length of the obturator artery, and all the collaterals 
of the internal iliac. The internal iliac on the right side was also 
