298 



Sir D. Bruce and others. Trypanosome 



[Feb. 8, 



Table XVI. — Percentage of Posterior-Nuclear Forms found among the Short 

 and Stumpy Varieties of the Trypanosome of Strain V, Chibibi. 



Date. 



Experiment 

 No. 



Animal. 



Percentage among short 

 and stumpy forms. 



1912. 









Dec. 3 



1660 



Eat 







„ 4 



1660 





34 



„ 5 



1660 





2 



„ 8 



1660 





6 



„ 9 



1660 





8 



„ 10 



1660 





23 



„ 11 



1660 





31 



„ 12 



1660 





28 



„ 13 



1660 





27 



„ 14 



1660 





32 





21 -1 



Comparison of the Human Strains. 



The following table gives the average length of this trypanosome in the 

 five human strains under consideration, as found in goats, sheep, monkeys, 

 dogs and rats, 6200 trypanosomes in all, and also the length of the longest 

 and shortest : — 



