570 PATHOGENIC AEROBIC BACILLI 
(not all were fatal) which I studied bacteriologically. From the stools in all 
of these, there has been obtained a bacillus which agrees with the organism 
obtained by you. I have also obtained the organisms from the mesenteric 
glands in three fatal cases. In one case of acute dysentery with secondary 
acute fibrinous peritonitis I obtained it from the exudate. The agglutina- 
tion reaction is not invariable. Amoebze were never demonstrable in any of 
these fourteen cases. On the other hand, in every case with certain anatomi- 
cal lesions we always find the amcebze. In some cases of dysentery in which 
the amcebee were absent and the bacilli present, that have lasted four to five 
weeks (one case lasted nearly two months) and then resulted fatally, we see 
a continuation of the same process that is observed in the acute fatal cases. 
The lesions are those of necroses of the mucous membrane and induration of 
the gut.’” 
