AMCEBJE OF THE INTESTINAL TRACT. 151 



necrotic membrane which upon removal reveals the 

 interior of the ulcer filled with mucus, pus or blood, 

 the floor being formed by the submucous or muscu- 

 lar coat. The presence in advanced cases of numer- 

 ous ulcers causes the interior of the intestine to re- 

 semble the rough, yellowish-brown, shaggy appear- 

 ance presented by old buffalo skins. 



3. The almost invariable presence of irregular 

 sinuses connecting the ulcers and situated beneath the 

 mucous membrane. 



Abscess of the Liver. A considerable proportion 

 of patients suffering from amoebic dysentery develop 

 abscess of the liver, and it is now a well established 

 fact that the pathogenic amoeba? cause this peculiar 

 form of liver abscess. 



The frequency of this complication is variously 

 stated by different observers, according as the per- 

 centage is based upon autopsy reports or upon the 

 total number of cases observed. Kartulis found that 

 55 per cent, of five hundred cases coming to autopsy 

 showed amoebic abscess of the liver; Zancarol found 

 that amoebic abscess of the liver occurred in 59 per 

 cent, of 444 cases that came to autopsy; Smith in 

 45 autopsies upon amoebic dysentery cases found this 

 complication in 84.4 per cent. 



Councilman and Lafleur collected the data upon 

 1429 cases of amoebic dysentery, of which only 21 



