410 Sir D. Bruce and others. Trypanosome [Feb. 24, 



Table III. — Percentage of Posterior-nuclear Forms found among the Short 

 and Stumpy Varieties of the Trypanosome of Strain I, Wild Glossina 

 morsitans. 



Date. 



Experiment 

 No. 



Animal. 



Percentage among short 

 and stumpy forms. 



1912 



June 18 



„ 19 



„ 20 



„ 21 



„ 22 



„ 24 



„ 25 



„ 26 



„ 27 



„ 28 



„ 29 



„ 30 



655 

 655 

 655 

 655 

 655 

 655 

 655 

 655 

 656 

 655 

 655 

 655 



Eat 



Average 



6 

 10 

 11 



17 

 

 16 



28 

 26 

 23 

 

 7 

 4 



12 "3 



II. Morphology of Strain II, Wild Glossina morsitans. 



The following table gives the average length of this trypanosome as found 

 in the rat, 500 trypanosomes in all, and also the length of the longest and 

 shortest. 



Table IV. — Measurements of the Length of the Trypanosome of Strain II, 



"Wild Glossina morsitans. 



Date. 



Method of fixing. 



Method of 

 staining. 



In microns. 



Average 

 length. 



Maximum 

 length. 



Minimum 

 length. 



1912 



Osmic acid 



Giemsa 



24-5 



34 -0 



17*0 



