FISTULOUS WITHERS, ETC. 
895 
recorded as having been associated with these lesions were only 
found after operation. 
II. In two cases of poll-evil we found a streptococcus and 
a white micrococcus in each. 
III. In seven cases of scirrhous cord three varieties of 
organisms were isolated : a streptococcus, white and yellow 
micrococcus. A streptococcus and white micrococcus in one 
case. Streptococcus and yellow micrococcus in one case ; white 
micrococcus only in one case, yellow micrococcus alone in one 
case and in three cases cultures from inside the cord remained 
sterile. In two cases cultures were made from the suppurating 
wounds after removal of the cords and a streptococcus and 
white micrococcus isolated in each case. 
IV. In five cases of deep shoulder abscesses a yellow micro¬ 
coccus was isolated from each case- 
V. In infected open wounds a streptococcus and white mi¬ 
crococcus were isolated in each of four cases. 
VI. In infected operative wounds a streptococcus and white 
micrococcus in three cases and a white micrococcus only in one 
case. 
VII. We have isolated from a perfectly normal skin the 
same organisms that we encounter in the various wound infec¬ 
tions. 
VIII. The white micrococcus we have found associated with 
the other organisms in these infections, we have found con¬ 
stantly present in the horse’s skin even after attempted disin¬ 
fection. 
In drawing our conclusions, we must bear in mind the danger 
of attaching too much importance to the apparent relation 
existing between the lesions and the species of bacteria associ¬ 
ated with them. However, we have found certain organisms 
appearing with such regularity in certain of the more common 
infections, that we feel justified in suspecting some causal rela¬ 
tion between the organism and the disease. 
But although the above facts do not furnish conclusive 
evidence concerning the causative factors operating in the 
