PLATE II. 



All figures — unless otheiwise stated — from specimens fixed in subliniale-alcohol and stained 

 with Heidenhain's iron-haematoxylin and eosin. Magnificatiun 2,500 diameleis. 



Fig. 16. Etitamoelia histotyti<a. Large active amoeba, containing three red blood-corpuscles, 

 from stoul of a case of amoebic dysentery (human). Stained with Weigert's iron-haema- 

 toxylin and eosin. 



. Eutavioeba foli. Large active amoeba, from human stool, 

 ngesled bacleiia and other food-inclusions in endoplasm, etc. (Co 



ve the nuclei 

 rith fig. 16.) 



Figs, 



Fig. 



Figs. 

 Figs, 

 Fig- 

 Fig. 



Figs. 

 Figs, 

 Fig. 



Fig. 



Fig. 

 Figs. 



Emiolimax 

 ana. from h' 



structure, etc. 



24. Eight nuclei fr 

 karyosome seen in 



ndividualsof.fi'. 



stools : show 



t, to show some of the 



cleate (mature) cysts respectively, 

 and granular inclusions. 



forms of 

 types of 



. 25, 26, 27. Uninucleate, binucleate, and quadrir 

 , 2S, 29. Cysts (mature) of E. wma with filamenl 



30. Very small mature cyst. 



31. Unusually large cyst. 



Figs. 32—42. loilaiiioel'a biilsihlii. 



32 —34. Active /. biilschlii amoebae from human faeces. Note 1 

 micio-organisms, etc. {Compare with tigs. 16—23.) 



35, 36, Precystic amoebae. Observe the changes taking place in 

 Iroin cytoplasmic inclusions, etc. 



37. Organism just encysted. Note structure of nucleus (compare with preceding figures), 

 volutin granules (pink) in cytoplasm, and small dear space representing glycogen mass in 

 living organism. 



3S. A large cyst, badly fixed, and showing much protoplasmic shrinkage, etc. [For 

 comparison wiih the figure of the cyst of " Enlmwcl'a " bUluhlti published by Prowazek 

 (1912a, PI. .Will, hg. 21),] ' 



(red). F'ixed in Carnoy's fluid, stained 



e, ingested 



39. Mature cysl, containing large glycogen 

 with Weigert's iron-haematoxylin and Besl'i 



40, 41, 42. Mature cysts, showing typical structure of nucleus, volutin granules, and 

 glycogen " vacuole " (represented as a clear space after removal of the glycogen). 41 and 

 42 are cysts of irregular shape, such as are often formed by this species. (The irregular 

 outlines are not artificially produced by the cylological reagents used.) Stained with 

 haemalum and eosin. => t. / 



W 





■k> 



' W 



' 0,0' I J. •,•'• '..■ 



