AMG@BA COLI. - 643 
perature lower than 75° F. The amoeba does not 
take the stain of various coloring solutions until the 
movements cease, presumably on the death of the 
organism. 
Practically nothing is known of the conditions of 
nutrition, respiration, and reproduction of the amceba, 
as no observations on these points are recorded. 
Occurrence of Amebe in Man. Amcebe were found 
in the stools by Kruse and Pasquale in forty out of 
fifty cases of the amebic type of dysentery; by 
Kartulis in every case in nearly 500 observations; and 
by Councilman and Lafleur in thirteen out of fifteen 
cases; while in their remaining two cases the amceba 
was found post-mortem, either in the material scraped 
from the base of the intestinal ulcers or in sections of 
the latter. The number found is very variable. In 
some cases actively moving amcehe are found in great 
numbers in every stool examined throughout the course 
of the illness, while in other cases they can be detected 
only in a long and careful search. As a general rule 
they are more numerous and more frequently present 
in the acute cases or in the earlier stages of the disease, 
or in the periods of exacerbations of chronic dysentery ; 
and they disappear more or less gradually from the 
stools during convalescence. Occasionally the intestinal 
ulceration is latent, the motions being quite formed, 
with but small flakes of mucus adherent to them, in 
which no amoebe may be found. In these cases the 
existence of dysentery is not suspected until an abscess 
of the liver occurs in which actively motile amcebe are 
found, either by exploratory puncture or in the sputa 
if the abscess evacuates itself spontaneously through 
the bronchi. 
