SUPPURATIVE CELLULITIS DUE TO STREPTOCOCCUS INFECTION. 177 
that they are frequently associated apparently as the etiological 
factor in various morbid processes. Their presence in inflam¬ 
matory lesions leading to suppuration is quite noticeable. 
The number of bacteria which have been found associated 
with suppuration in the bovine species is already quite large, but 
as yet streptococci seem to be the organisms most frequently 
encountered. Lucet (1. c.) has reported 52 cases of abscess in 
cattle which were examined bacteriologically. A list of the or¬ 
ganisms isolated from these cases is appended. 
Streptococcus pyogenes bovis.in 9 cases. 
Staphylococcus pyogenes bovis.in 2 cases. 
Bacillus pyogenes bovis.. in 6 cases. 
Bacillus liquefaciens pyogenes bovis.in 4 cases. 
Bacillus crassus pyogenes bovis.in i case. 
Streptococcus and staphylococcus.in 3 cases. 
Streptococcus and B. pyogenes.in 4 cases. 
Streptococcus and B. crassus.in 2 cases. 
Streptococcus, staphylococcus and B. crassus. ... in i case. 
Bacillus pyogenes and bacillus crassus.in i case. 
Bacillus pyogenes and bacillus liquefaciens.in 2 cases. 
One or the other of the above mentioned organisms 
with an undetermined species.in 14 cases. 
with staphylococcus pyogenes albus of man . . in i case. 
with staphylococcus pyogenes aureus of man. . in 2 cases. 
It seems from the present knowledge concerning the causes 
of suppuration in cattle that the importance of streptococci can 
not be questioned. This is of interest, as cattle are not espe¬ 
cially susceptible to bacterial infection nor are the streptococci 
the most hardy of pyogenic organisms. It remains for future 
investigations to determine whether the various streptococci 
found in these lesions belong to a single species and if so to find 
in what respects it differs from streptococcus pyogenes. Unfor¬ 
tunately, Lucet does not point out the distinguishing features 
which led him to separate the pyogenic organisms found in cat¬ 
tle from those which had already been described from similar 
lesions in other animals and in man. 
