OF THE ALIMENTARY TRACT 



45 



motile, as a rim when rounded. The endoplasm is 

 granular but not coarsely so as in some of the other 

 amoebae. In this part of the body may be seen red 

 blood corpuscles from the host, in amoebic dysentery. 

 It does not contain bacteria and other solid food bod- 



FiG. 1. — Endamoeha histolytica. 



A, trophozoite with ingested red blood corpuscles. B, precystic 

 C, D and E, cysts with one, two and four nuclei. Draw- 

 ings of specimens stained with iron-haematoxylon. x 2000. 



ies in this natural state, although it may in culture, 

 since these objects do not ordinarily form part of the 

 food of this amoeba. The nucleus is invisible in the 

 unstained specimen. 



Stained by the iron-haematoxylon method, with 

 light eosin counterstain, the ectoplasm is very light 



