30 



Sir D. Bruce and others. Trypanosome 



The average length of the trypanosome of the Mzimba strain, in different 

 species of animals, taken from Table I, is as follows : — 



Table II. 



Species of animal. 



Number of 

 trypanosomes 

 measured. 



In microns. 



Average 

 length. 



Maximum 

 length. 



Minimum 

 length. 



Donkey 



20 



18-3 



21 -0 



16 -0 





80 



20 -7 



32 -0 



17-0 





40 



21 -4 



30 -0 



17 -0 



Dog 



360 



21 -4 



32 -0 



16 -0 





500 



21 -6 



32 -0 



16-0 



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

 1000 Individuals of the Trypanosome of the Mzimba Strain. 





Microns 





13 



11- 



IS 



16 



'7 



IB 



19 



10 



2/ 



22 



a 





IS 



26 



*7 



ZB 



2S 



so 



31 



01 



33 



M- 



SJ 



36 



V 



38 



m 











































































































n 

 it 











































































































IS 























































/4 























































15 























































11 





















































3 it 























































> 























































Xs 

































































t 











































>. 



<& 7 

 a. / 

 6 











































































































5 























































T 























































3 











i 













































2 























































/ 











































































































This curve is made up of measurements from 20 specimens of trypanosomes 

 taken from the original donkey, 80 from the goat, 40 from the monkey, 360 

 from the dog, and 500 from the rat. 



