FISTULA. 
533 
Through the kindness of Iowa veterinarians, I have accurate 
reports on three hundred and fifty cases of fistulous withers, 
one hundred and thirty-threeseventy-two cases where 
both appeared on same patient, and one hundred and three 
fistulous sores in other regions, and in addition the twenty 
cases of fistulous withers given under experimental work, 
Results and Time Required. —Of the 350 cases of fistu¬ 
lous withers 87.5 per cent, healed under various forms of treat¬ 
ment. The shortest time required 17 days, longest 126. Aver¬ 
age of all cases reported 53 days. 
Of the 133 cases poll evil 84.9 per cent, healed with sim¬ 
ilar treatment, average time required 42 days. Of the 72 
cases where both appeared on same patient, 77.7 per cent, 
healed ; I cannot give accurate figures on time required, but 
evidently it exceeded that of either fistula or poll-evil . Of the 
103 cases of fistula sores in other regions, 92 per cent, healed 
rapidly. Those appeared as follows : Scrotal 6, mammary 
glands 5, ear n, superior maxilla 8, inferior maxilla 7, rectal 
6, dorsal region 9, mid-cervical 2, costal 9, brachial 2, tibial 
3, patella 1, parotid 1, tarsal 2, flank 6, vagina 1, scapula 1, 
trachea 1, pectoral 8, Steno’s duct 2, femoral 5, sacral 1. 
The records of thirteen successive cases of fistulous 
withers, which occurred in my own practice during a certain 
period, and which were treated according to the general 
method given, show 92 per cent, cured, average period of 
treatment 46.5 days. 
Prognosis. —A study of these cases and the results re¬ 
ported for each shows plainly that the prognosis does not so 
much depend on the shape of head or style of withers, as fre¬ 
quently stated, as on the location of pre-flstular abscess and 
subsequent sinuses. 
Next in importance is the physical condition of patient. 
Experimental Treatment. —My own work during the 
past year has been such that I could not personally carry any 
continued series of experiments, so I had recourse to friends 
interested in the same work, who tried for me a certain line 
of treatment and reported results. 1 have no copy of the 
letter sent them, but taken from memory it was in general as 
