570 



(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. Amoebae 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 amoebae. In some cases of dysentery in which 

 the amoebae 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.' " 



