888 
CARL W. GAY. 
obtained tufts closely resembling staphylococcus aureus from 
cultures of the supposed botryomyces and was able to produce 
the characteristic botryomycotic lesions in a horse by inocula¬ 
tions of a pure culture of this organism. Hell* considered the 
myces as simply tufts of pus cocci and bases his conclusion on 
the fact that in every case he isolated the staphylococcus pyo¬ 
genes from the supposed botryomycotic lesion. 
Contrary to Jensen, who says botryomycosis is peculiar to 
equines, Dr. G. Newmanf speaks of botryomyces being found 
in the spermatic cord, skin, lungs and not rarely in the udder 
of horses and cattle. Also in the spermatic cord of pigs. Ob¬ 
servers have found in horses new growths in the superior max¬ 
illary sinus and in the tail, multiple tumors extensively dis¬ 
seminated over the entire skin, implicating the subcutis, and 
infection of the muscles, bones, plurse, and the connective tis¬ 
sue of the pelvic cavity, uterus, etc. 
Jensen holds the commonest form of muscle botryomycosis 
to be the “ Brust beule ” with which all practitioners are fami¬ 
liar, as deep shoulder abscesses. 
Our own experience has upheld the theory of Kitt and Hell, 
that the so-called botryomyces are simply tufts of pus-producing 
cocci. We have not had occasion to study the form described 
as affecting the lungs, but every case which we have seen that 
could be properly included in the category of botryomycosis, 
diagnosis to be based on the description of the lesions as given 
by other investigators, we have demonstrated to be associated 
with and probably due to pus cocci. We have been able to 
produce the characteristic lesions by inoculation of a pure cul¬ 
ture of a yellow micrococcus, originally isolated from a case of 
what we understand as botryomycosis. 
Case XVII .—Clinic No. 1967, Oct. 12, 1899. Patient, a 
grey horse, weight 1000 lbs., 8 years old; used for general 
farm work ; had suffered for some time from a small bunch at 
the front of the right shoulder which became very much en- 
* Zeitschrift fur Veterinail, B I and II. 
f Friedberger 6° Frohner (Hayes’ Translation.) 
