TRYPANOSOMATOSIS 133 



Notwithstanding the large number of parasites in the blood, 

 anemia is not very marked. Often the red corpuscles remain at 

 the normal number, in some cases fall to not less than 4,500,000, 

 in only one case fell to 2,380,000 (Koch). 



Dschunkowsky and Luhs have described a disease of cattle in 



Fig. 15. Theileria parva (Theiler). 



Transcaucasia, due to an organism very similar to Th. parva, 

 which Dschunkowsky named Piroplasma annulatum. The para- 

 sites have been found in large numbers in the blood in the acute 

 form of the disease, up to 95% of the red corpuscles containing 

 from one to eight parasites. The disease may be transmitted by 

 the inoculation of blood containing the parasites. In the chronic 

 form from 10-40% of the red corpuscles contain parasites. Anemia 

 is marked in chronic cases, as low as 800,000 red corpuscles having 

 been found. 



TRYPANOSOMATOSIS 



The organisms causing the several varieties of trypanosomatosis 

 are so similar in morphology that a description of one with slight 

 modifications will serve for the others. The trypanosomes are 



