REPORTS OF CASES. 
499 
fact that one of the levers, at all events, works upon the jack- 
screw plan (which may possibly have something to do with the 
origin of the term jack spavin); for evidence of this we have 
only to watch a horse drawing a load over a surface where the 
footing is a little slippery, and we will observe that the hind foot 
turns around in a somewhat circular manner as if boring into the 
ground. (To be Continued.) 
REPORTS OF GASES. 
SPASM OF THE LARYNX 
By M. U. Trumbower, Sterling, Ill. 
Aug. 14, 1894, I received a telegram from W. C. Galbraith, 
\ . S., of Wheaton, Du Page County, Illinois, requesting my im¬ 
mediate presence at Wheaton to investigate a very fatal disease 
among the horses of Mr. PI. B. Patrick. I arrived at 10 A. M. 
on the 14th, and found five horses dead, all of which died with¬ 
in six hours time on the previous day. 
Mr. Patrick made the following statement: “At 6 A. M. he 
>ent one of hired men out into the field to bring up one of the 
mares for work- The man returned and reported that the ani¬ 
mal was ailing. About an hour later Mr. Patrick reached the 
field and found this animal and another one dead, and a third 
one breathing hard with froth and water running from the nos¬ 
trils. He immediately sent to town, one mile, for Dr. Galbraith, 
who arrived at 9 A. M., and found three dead in the field. One 
tour year old mare, that he had been treating for a sore neck, 
appeared indisposed. Dr. Galbraith felt her pulse and considered 
it normal in frequency and volume. He then proceeded to make 
an autopsy on one of the dead animals. At 9:30 the four-year 
old mare was noticed to cough violently several times, and a 
frothy discharge, mixed with serum, came from both nostrils. 
Soon this discharge became excessively profuse, and the breathing 
gradually more impeded. She succumbed to suffocation at 11:13. 
Dr. Galbraith attempted to administer chloroform by inhala¬ 
tion, but she could not bear it. He then administered bella- 
