FOUR OASES FROM A NOTE-BOOK. 
579 
On left side and underneath, (on top as animal was on 
its back), found a spleen weighing about two pounds, normal 
in shape, color and texture. The rest of viscera apparently 
normal. 
FISTULA OF STENO’S DUCT. 
Last spring the owner of the horse in question noticed 
that the animal did not take the bit as kindly as had been 
his habit, and acted as if his mouth was sore. Within a short 
time the horse was brought to me, and an examination of the 
buccal cavity disclosed that the third upper molar was dis¬ 
eased, and the outside edges were very pointed; this condi¬ 
tion was remedied, and the animal returned to work with ap¬ 
parent relief. 
Two or three weeks after this the owner noticed an en¬ 
largement on the left side under the jaw bone, which gradu¬ 
ally increased in size until it broke, and a continual stream of 
clear, thin fluid escaped. This condition the owner tried in 
vain to control for about three weeks, and then the animal 
was again brought to my notice. At once recognizing the trou¬ 
ble, I began to look for the cause, and examining the mouth, 
found that the mucous membrane on the left side of the mouth 
opposite the third upper molar was corrugated and inflamed. 
Thinking that the cause of the trouble might originate there, 
I tried to pass a catheter while the animal was standing, but 
failed to accomplish the feat. Sent the horse home, and had 
him prepared for casting, and the next day he was cast, and 
the catheter was passed into the duct down as far as where it 
runs under the bone, and then the animal was allowed to get 
up. 
The opening under the jaw was kept clean, and a strong 
solution of carbolic acid applied to the part several times a 
day. The result of this was that the discharge stopped after 
a short time, and, at time of writing the animal is apparently 
all right, with the exception that the course of the duct is well 
defined back to the gland. 
