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R. H. HARRISON. 
of the powder; this was removed and milder powder used. The 
horse was seen several times after this, and when last seen the 
elbow had very nearly regained its normal appearance. 
A grey gelding was brought to the free clinics for treatment. 
On examination the horse was found to have a melanotic tumor 
the size of a goose’s egg on the inside of the sheath ; an elastic 
ligature was applied and the owner directed to watch, and bring 
the tumor back when it dropped off. The horse was brought 
back in 48 hours, the owner saying that the tumor had dropped 
off and could not be found in the straw. On examining the - 
sheath a very foetid mass, shriveled up to the size of a hickory 
nut, was found with the elastic ligature still around it, and which 
came off on being handled, leaving a small granulating surface. 
A sorrel gelding in the hospital for other treatment was found 
to have a small epithelioma of the sheath, elongated in shape like 
a peanut ; an elastic ligature was applied and the tumor dropped 
off in a few hours, leaving a wound which healed without difficulty. 
CANINE PATHOLOGY. 
By R. H. Harrison, D.V.S., House Surgeon American Veterinary 
College Hospital. 
1. Needle in the Rectum. 
An English pug, who had been brought to the clinic several 
times before, suffering with “morbus coxarium,” was brought to 
the morning clinic lately, having great trouble in the act of 
defecation. 
A piece of thread was hanging from the anus and was 
removed; forceps were then introduced into the rectum, to 
ascertain if any hardened feces or pieces of bone were present, 
thereby causing the difficulty. Nothing was found, but when the 
finger w’as introduced, the sharp point of a needle could be felt 
in the lateral wall of the rectum. A small puncture was made 
externally over the external tuberosity of the ischium, and the 
needle removed with a pair of forceps. The little fellow seemed 
