OF THE ALIMENTARY TRACT 195 



The organism measures about 5 to 7 microns in 

 length, is pearshaped, has a conspicuous cytostome 

 and two flagella, the anterior of which is directed for- 

 ward and used in locomotion, the other directed back 

 through the cytostome and apparently used in feed- 

 ing. It moves in a jerky manner. 



The cytoplasm is alveolated and vacuolated and 



Fig. 30. — Emhadomonas intestinalis. 



Drawings of trophozoite and cyst from specimens stained by 

 iron-haematoxylon. x 3800. 



contains bacteria. The nucleus, seen only in iron- 

 haematoxylon stained specimens, is at the base of 

 the flagella, is rounded, with definite membrane and 

 central karyosome. 



The cysts are slightly smaller than the tropho- 

 zoite, are pearshaped refractive bodies, resembling 

 the cysts of Chilomastix viesnili, but smaller. 



Although attention has been called to the organ- 

 ism usually in conditions of diarrhoea, there is no 

 definite information as to its exact habitat in the in- 

 testine or any local or systemic effect of it. 



