116 



Sir D. Bruce and others. Trypanosome 



Table V. — Average Length of the Trypanosome of Naturally Infected Dog 

 Strain I, Dog 48, after passage through rats for seven months. 



Species of animal. 



Number of 

 trypanosomes 

 measured. 



In microns. 



Average length. 



Maximum 

 length. 



Minimum 

 length. 



Eat 



500 



24 -1 



33 



19 -0 





Table VI. — Average Length of the Trypanosome of Naturally Infected Dog, 

 Strain I, Dog 48, after passage through rats for two years. Series of 

 46 animals. 



Species of animal. 



Number of 

 trypanosomes 

 measured. 



In microns. 



Average length. 



Maximum 

 length. 



Minimum 

 length. 



Eat 



500 



28 -6 



36 -0 



18 -0 





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

 1040 Individuals of the Trypanosome of Naturally Infected Dog, Strain I, Dog 48, 

 taken at random from various animals. 



/S/l 1 C T O 1) S 



IS 



n 





is 



17 



iS 



i c J 



20 



21 



22 



15 





25 



20 





:s 



21 



3fl 



il 



21 



55 



34 



3? 



36 



5? 



































































































































































































































































































































































































































































































































































































































































































































/ 













































V 







4 





















































































































































































































































16 



1.5" 

 1+ 

 15 

 II 



w° 



2* 

 p« 



v i 



u 6 



