AMQ@BA COLI. 647 
Concerning the source of the amoeba and the mode of 
infection little can be positively stated. It is reason- 
able to suppose, however, that the mouth must be the 
usual path of infection, and that the ameba, in all 
probability, is taken with drinking water. 
With regard to other organisms found in amcebic 
dysentery, a great number of bacteria of various kinds 
and some flagellated infusorial organisms are associated 
with the ameeba in dysenteric stools. 
