474 ALPHABETICAL SUMMARY. 
CANKER. 
Cause.—Old horses, when “turned out” for life as pensioners; aged 
and neglected animals will also exhibit the disease. 
Symptoms.—Not much lameness. The disease commences at the cleft 
of the frog; a liquid issues from the part, more abundant and more 
abominable than in thrush; it often exudes from the commissures joining 
the sole to the frog. The horn firstly bulges out; then it flakes off, ex- 
posing a spongy and soft substance, which is fungoid horn. The fungoid 
horn is most abundant about the margin of the sole, and upon its surface 
it flakes off. This horn has no sensation. The disease is difficult to 
eradicate when one fore foot is involved. When all four feet are impli- 
cated, a cure is all but hopeless, and the treatment is certain to be slow 
_and vexatious. 
Treatment.—See that the stable is large, clean, and comfortable; 
note that the food is of the best; allow liberal support; pare off the 
superficial fungoid horn, and so much of the deep seated as can be 
detached. Apply to the diseased parts some of the following: Chlo- 
ride of zinc, half an ounce; flour, four ounces. Put on the foot without 
water. To the sound hoof apply chloride of zinc, four grains; flour, 
one ounce. Cover the sound parts before the cankered horn is dressed ; 
tack on the shoe; pad well and firmly. When places appear to be in 
confirmed health, the following may be used: Chloride of zinc, two 
grains; flour, one ounce. At first, dress every second day; after a time, 
every third day, and give exercise as soon as possible. 
CAPPED ELBOW. 
Cause.—Injury to the point of the elbow. 
Symptom.—lIt is often of magnitude, and is liable to ulcerate and 
become sinuous. 
Treatment.—The same as capped hock. 
CAPPED HOCK. 
Cause.—Any injury to the point of the calcis. 
Symptom.—A round swelling on the point of the hock, which, should 
the cause be repeated, often becomes of great size. 
Treatment.—If small, set several men to hand-rub the tumor con- 
stantly for a few days. Should the capped hock be of magnitude, dis- 
sect out the enlargement, without puncturing it. Remove none of the 
