774 
VERANUS A. MOORE. 
to be inoculated into an abraded surface upon the man’s body, 
such a case has never before come to our knowledge, although 
every opportunity for infection is usually given in the course 
of attendance upon a patient. The case seems open to the sus¬ 
picion of coincidence, but it is indeed a singular circumstance. 
ORIGINAL ARTICLES. 
OBSERVATIONS CONCERNING THE SIGNIFICANCE OF 
STREPTOCOCCI IN COMPARATIVE PATHOLOGY. 
By Veranus A. Moore, B. S., M. D. 
Professor of Comparative Pathology and Bacteriology, New York State Veterinary 
College, Cornell University, Ithaca, N. Y. 
{Continuedfrom page 697.) 
STREPTOCOCCI IN INFECTIOUS MASTITIS. 
The acute and more chronic inflammatory affections of the 
udder are so numerous that it seems necessary in considering 
the specific cause to determine somewhat carefully the nature of 
the disease in each case. Moller, in his work on Operative 
Veterinary Surgery* has discussed somewhat fully the various 
forms of udder infections. They seem to fall very naturally 
into two groups, namely, (1) those in which the parenchyma is 
most affected and (2) those in which the stroma or fibrous tis¬ 
sue is involved.f The form of mastitis more frequently en¬ 
countered as an infectious (transmissible) disease seems to be 
characterized by very marked changes in the milk accompanied 
with the usual symptoms of parenchymatous inflammation of 
the gland itself. The discharge from the udder usually con¬ 
tains flaky masses held in suspension in the clear or perhaps 
cloudy serum. The color varies, and occasionally the mass is 
blood-stained. The microscopic examination shows the pres- 
* Dollar’s Translation, p. 388. 
"I I have encountered this form in one dairy of eight cows, all of which were aftected. 
In this instance a great variety of bacteria were obtained but streptococci were absent. 
