THE TRYPANOSOMA CRUCII. 471 



Pig. 40 (Oc. IS). — Small brauclied capillary from a smear from cortical part 

 of brain of rat, showing the lumen completely blocked with amoeboid forms. 



Fig, 41 (Oc. IS). — Small capillary from smear from medulla of rabbit, 

 siiowing the lumen more completely blocked with amoeboid forms. 



The large red bodies in Figs. 40 and 41 are the nuclei of the capillary 

 walls. 



Fig. 42 (Oc. 18). — From blood of spleenless cat, twenty. first day, showing 

 the formation of tangles ; the central part is already quite like the plasmodium 

 shown in Figs. 38 and 39, containing micro- and macro-nuclei. 



Fig. 43 (Oc. 12). — From same specimen, showing a plasmodial mass with 

 flagella around margin ; probably the last stage of the formation of a small 

 Plasmodium. 



Figs. 44, 45 (Oc. 18). — Leucocytes from blood of a spleenless cat, showing 

 phagocytosis. In Fig. 44 two entire amoeboid forms with the micro- and 

 macro-nuclei can be seen, and at lower end a still undeslroyed niicronucleus, 

 and also two nearly colourless bodies, probably the last stage of destruction 

 of the organism. In Fig. 45 two amoeboid forms are seen in fair condition, 

 the one above having still its flagellum attached to it. There is also a larger 

 body with a dot in it, which is probably a destroyed organism, with only the 

 micronucleus left. 



Fig. 4G (Oc. 12). — Trypanosoma Lewisi from blood of sewer rat, to 

 show the gross differences between these and the Trypanosoma Brucii. 



