182 Colonel Sir D. Bruce. [May 19, 



Table I. — Measurements of the Length of Trypanosoma evansi. 















In microns. 





No. of 







Method of 



Method of 









Ad 



imal. 









eipt. 





filing. 



. • ■ 



Ayerage 

 length. 



Maximum 

 length. 



Minimum 

 length. 



— 



Elephant 



— 



— 



27 -0 



32 -0 



20 -0 



— 







— 







26 -5 



31 -0 



21 -0 



— 







— 



— 



26 -7 



31 -0 



21 -0 



— 







— 





26 1 



29 -0 



22 -0 



— 







— 



— 



27 -3 



32 -0 



23 -0 



— 



Camel 



— 



— 



22 -4 



28-0 



18 -0 



— 







— 



. 



24 -0 



27 -0 



20 -0 



— 







— 



— 



23 -4 



28 -0 



19 -0 



— 







— 



. 



22 -9 



27-0 



18 -0 



— 







— 



— 



22 -6 



27 -0 



18 -0 



184 



H 



orse 



— 



— 



26 -2 



28 -0 



22 -0 



184 







— 



— 



25 -9 



29 -0 



21 -0 



184 







— 



— 



25 -0 



29 -0 



18 -0 



184 







— 







25 -1 



30 -0 



19-0 



— 







— 



— 



22 -9 



27 -0 



20 -0 



— 







Osmic acid 



Griemsa 



25 3 



29 -0 



18-0 



14 



Dog 











25 -2 



28 -0 



22 -0 



1 







— 



— 



26 -7 



30 -0 



21 -0 



— 







— 







24 -7 



29 -0 



21 -0 



2 







— 



— . 



26 -3 



30 -0 



23 -0 



— 







— 







25 -7 



28 -0 



24 -0 



— 



Guine 



a-pig (1) 



Osmic acid 



Griemsa 



24 -5 



27 -0 



22 -0 



— 





(2) 







24 -4 



29 -0 



21 -0 







(3) 







24 -4 



27 -0 



22 -0 



— 





(4) 







24 "6 



27 -0 



22 -0 



166 









23 9 



28 -0 



21 -0 



87 















27 '4 



34 -0 



21 -0 



— 







— 







27 -2 



31 -0 



24 -0 



191 















23 -5 



27 -0 



19 -0 



— 













31 -0 



25 -0 





Eat (1) 



Osmic acid 



Giemsa 



24 -8 



28 -0 



21 -0 







(1) 







22 -7 



25 -0 



20-0 







(2) 







24 -7 



29 -0 



21 -0 







(2) 







23 -2 



25 -0 



20 -0 





























24-3 



27 -0 



19 -0 













24 -3 



28 -0 



19 -0 













26 -5 



32 -0 



22 -0 













26 -6 



29 -0 



24 -0 



131 











25 1 



27 -0 



22 -0 













23 -4 



26 -0 



20-0 





24 -9 



34 -0 



18 -0 



Contents of Cell. — According to Sir John McFadyean, a large proportion of 

 Trypanosoma evansi show no distinct granules in front of the nucleus, whereas 

 the majority of Trypanosoma brucei do. Moreover, when granules are present 

 in the former, they are, as a rule, not so large or so numerous or so deeply 

 stained as they are in the latter. These differences are not distinct except 



