causing Disease in Man in Nyasaland. 99 



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

 500 Individuals of the Liwonde Strain I, taken on Nine consecutive Days from 

 Eat 2378. 



This curve differs from the ordinary "Wild G. morsitans curve, but is similar 

 to Strains II, IV and V of the Human strain.* 



Breadth. — The following table gives the breadth of this trypanosome in the 

 rat — 500 trypanosomes in all. 



Table II. — Measurements of the Breadth of the Trypanosome of the Liwonde 

 Strain I, measured across the Widest Part, including the Undulating 

 Membrane. 



Experiment 

 No. 



Animal. 



Number 

 measured. 



In microns. 



Average 

 breadth. 



Maximum 

 breadth. 



Minimum 

 breadth. 



2378 



Eat 



500 



3-0 



4-50 



1-25 





* ' Eoy. Soc. Proc.,' B, vol. 86, pp. 288, 295, and 298 (1913). 



