368 The Management and Diseases of the Dog. 
sequent application of nitrate of silver; the part was 
perfectly healed in seventeen days. _ 
Mammary Fistula is most fr:quently associated with 
cancer. It has been mentioned in connection with 
mammitis under the heading of Lacteal Fistula, but such 
cases are very exceptional. The surgical treatment, when 
the disease is not associated with cancer, is much the same 
as in other forms of fistula. Injections of iodine are some- 
times useful. 
Fistula in the Teat, though common in bovines, seldom 
occurs in. the bitch, and when it does so, the opening 
usually takes place at the base of the teat. Lactation 
retards the treatment, and if the patient is suckling, it may 
be necessary to wean the puppies, or wait until the bitch is 
dry before adopting direct surgical treatment. 
Gastric and Biliary Fistule being purposely promoted 
for experimental purposes, need no description in this 
work, 
EXCISION OF SEROUS CYST. 
In the early part of 1883 I was consulted by Mr. H. E. 
Marston relative to a swelling in front of the throat of a 
small, smooth white terrier called “The Colonel.” The 
enlargement proved to be a serous cyst, or abscess. The 
contents were then evacuated with a trochar and canula, 
and as I was informed it had previously been opened and had 
refilled, I gave instructions with a view of preventing the 
latter result. On the 14th of January, 1884, I received 
another visit from Mr. Marston and “The Colonel,” and 
the old story of evacuation and refilling was once more 
told. An examination revealed considerable enlargement 
of the fruitful cyst, and, as a final measure, I recommended 
its complete excision. So, on the 16th, “The Colonel” 
came to my infirmary, and submitted with a nerve of iron 
to the knife, the operation proving a long and tedious one. 
