4 Sir D. Bruce and others. Trypanosome 



Chart 1. — Curve representing the Distribution, by Percentages, in respect to Length, 

 of 500 Individuals of Trypanosoma pecorum — The Mvera Cattle Strain. 





/Microns 



9 | lo 



// 





ll\lS\l$\/?\l8 



& 



H 

 ZO 

 Id 

 ■ 16 



*j 12. 

 S /(/ 



i s 



6 



t 



2 

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This curve is made up of measurements from 80 specimens of trypano- 

 somes taken from the donkey, 180 from the ox, 100 from the goat, 100 from 

 the dog, and 40 from the rat. 



Breadth. — Measured across the broadest part of the body, but not including 

 the undulating membrane, the Mvera Cattle strain of T. pecorum averages 

 1*97 microns (maximum 3, minimum 1-25). 



II. The Wild-game Strain. 



The citrated blood of the wild game was brought up from the " fly-country" 

 by a motor-cyclist, and at once injected into a goat, monkey and dog. A 

 description of the kind of wild game found in this locality and the trypano- 

 somes they are infected with was given in a previous paper.* 



Length. — The following table gives the length of this trypanosome as found 

 in the goat, monkey, dog, and rat, 500 trypanosomes in all : — 



* ' Eoy. Soc. Proc.,' 1913, P>, vol. 86, p. 269. 



