1923] Bercovitz: Endamocba coli and Council mania lafleuri 367 



and stain. For this reason this studj^ is not absolute, but the findings 

 are recorded as a general result and are liable to the variations of 

 personal and other elements. 



Early in the study it was noticed that in stools in which Council- 

 mania were found the cysts seemed to be more numerous than in those 

 containing Endamoeha coli. This feature was also studied in connec- 

 tion with the action of stains. 



The results of the findings in the first fifty cases are recorded in 

 tables 1, 2, and 3. In general it was found that the cysts of Council- 

 mania when present are abundant in the stool, while on the other 

 hand those of Endamoeba coli are usually very scarce, at times not 

 more than one or two cysts being found on a slide. It was also found 

 that the tendency of the cyst wall of Councilmania to take the Congo 

 red was much more marked than in the case of Endamoeba coli. 

 Furthermore, the cysts of Councilmania seem to be ovoidal or 

 ellipsoidal oftener than the cysts of Endamoeba coli. 



In the first series of 50 cases there were 17 eases, or 34 per cent, 

 with E. coli infection; 29 eases, or 58 per cent, with Councilmania 

 infection, and 4 cases, or 8 per cent, with infection of both E. coli and 

 Councilmania. 



TABLE 1 



Series I. Eelatht; Abundance of Cysts of B. coli and Councilmania in Slides 



This table indicates that Councilmania cysts ai-e more abundant 

 in stools than are the cysts of Endamoeba coli. 



TABLE 2 



Series I. Reaction of Cysts of E. coli and Councilmania to Congo Eed 



