586 
EXTRACTS FROM EXCHANGES. 
POEU-EVIE—FISTULOUS WITHERS—AMPUTATION OF A COW’S 
HIND LEG. 
By A. W. Baker, V. S., Brasher Falls, N. Y. 
In response to Dr. Merillat’s article in the October Review 
asking for data relating to poll-evil and fistulas of the withers, 
my opinion is that both readily yield to treatment, which opin¬ 
ion has been borne out by treating a large number of cases, of 
which one of poll-evil was the only case that did not recover; 
dying six months after operation from an abscess forming on 
the brain. In treating them I make free drainage incis?ons, 
examining carefully for diseased vertebrae; I then remove all 
diseased muscle, ligament or bone, pack the cavity with absorb¬ 
ent cotton, saturated with a 1-400 solution of corrosive sublimate. 
This I leave in twenty-four or thirty-six hours, remove the pack¬ 
ing and afterwards dress with creolin solution, 1-20, for two 
weeks ; then 1-40 until recovery takes place. 
I would like to mention an amputation of a cow’s hind leg. 
The cow had a compound fracture of the tibia, four inches be¬ 
low the patella, which had been reduced and put in a plaster- 
of-paris cast by an M. D. The fractured ends refused to unite, 
and on being called in, eighteen days after, I decided to ampu¬ 
tate the leg, which I did by the flap method. The after treat¬ 
ment consisted of irrigations of a 1-30 solution of creolin. I saw 
the cow two wegks after operating and found the wound healthy, 
with no indication of sloughing. 
EXTRACTS FROM EXCHANGES. 
GERMAN REVIEW. 
By Prof. Olof Schwarzkopf, Flushing, N. Y. 
Tannoform in Veterinary Practice.— This new prep¬ 
aration of Meick’s is the product of condensation of tannic acid 
and formaldehyde. It is a whitish-red, odorless powder, insolu¬ 
ble in water, and of a double-action, it being astringent and 
antiseptic. I11 human medicines this remedy soon conquered a 
foremost place of usefulness, but has been used little in veteri- 
nar) practice. Rabus-Eaudau publishes a number of reports of 
its application on wounds in dogs and horses, which appear to 
recommend it as a remedy favoring a very quick and complete 
healing process. R. has applied tannoform, pure, as a powder 
