248 



THE UNIVERSITY SCIENCE BULLETIN. 



Pleomorphic streptococcus . . . 



Strep, equinus 



Strep, mitis 



Strep, pyogenes 



Strep, salivarius 



Strep, anginosus 



Strep, fecalis 



Strep, pneumonia 



+ 



Note. — In the above table in the column for m.ilk ( + ) signifies acid with clotting, (A) acid 

 without clotting, ( — ) no apparent action. For neutral red ( + ) signifies reduction, ( + *) partial 

 reduction, ( — ) no action. Otherwise ( + ) signifies acid to litmus, ( — ) no action or alkaline. 



Winslow^ seems to think that the Streptococcus scarlatina de- 

 scribed by Gordon and the Streptococcus conglomeratus of Kurth 

 were the same as Streptococcus pyogenes. He bases his statement 

 upon the further studies of Gordon upon this group from the 

 standpoint of their fermentation reactions. It will be observed 

 that the pleomorphic streptococcus described in this paper would, 

 according to Andrew's and Horder's classification, correspond to 

 Streptococcus anginosis. 



Since this organism was isolated the author has made slides 

 and cultures from 365 cases of tonsillitis occurring among students 

 and faculty of the University and from other cases in the city, 

 from several cases of bronchitis and one case of hand infection. 

 In addition, fifty cultures and smears were made from the throats 

 of apparently normal individuals. Streptococci with large cells 

 and with rod-like cells were found very commonly in the cases of 

 tonsillitis and frequently in bronchitis. Only a very few were 

 obtained from the normal throats. These were from individuals 

 subject to attacks of tonsillitis as a rule. Five strains were ob- 

 tained from cases of tonsillitis, two from cases of bronchitis, and 

 one from infection on back of hand of a member of the faculty, 

 all of which showed marked tendency toward persistent involution 

 and produced more marked conglomerate masses in the bottom 

 of broth tubes. They correspond very closely in morphology, 

 cultural characteristics and tinctorial reactions with the organism 

 described above. From four of these cases fresh material was 

 obtained and isolations of club-shaped organisms and chains with 

 enlarged cells were made by Barber's pipette method for single 



