108 



Sir D. Bruce and others. Trypanosome 



Table XV. — Percentages of Posterior-nuclear Forms found among the Short 

 and Stumpy Varieties of the Trypanosome of the Human, Wild-game, 

 Wild Glossina morsitans, and Liwonde Strains. 



Date. 



Strain. 



Animal. 



Percentage among short 

 and stumpy forms. 



1912 

 1912 

 1912 

 1913 





Eat 



17 -8 

 26 -2 

 12-5 

 19 -8 







Wild &. morsitans ... 

 Liwonde 











Avi 



;rage 



19 1 





II. Animals susceptible to the Trypanosome of the Liwonde Strain. 



The following tables give the incubation and duration of the disease in 

 goats, monkeys, dogs, guinea-pigs, and white rats, which were sub-inoculated 

 with Strains I, II, and III from dogs infected in the Liwonde district : — 



Liwonde Strain I. 



Table I. 



Date. 



No. of 

 expt. 



Source of virus. 



Period of 

 incubation, 

 in days. 



Duration 

 of disease, 

 in days.* 



Eemarks. 









Goat. 







1913. 

 Aug. 12... 

 „ 12... 



2382 

 2383 



Monkey 2340... 

 „ 2340... 



6 

 6 



52 

 44 



Died of Strain I. 

 » n 









Monkey. 





Aug. 7... 

 „ 7... 



2339 

 2339 



Dog 2322 1 

 „ 2322 



4 



4 



Dog- 



27 

 72 



Died of Strain I. 



33 33 



July 16... 

 Aug. 12... 

 „ 12... 



2322 

 2380 

 2381 



Wild flies 

 Monkey 2340... 



2340... 



6 

 6 

 6 



23 

 46 

 45 



Died of Strain I. 



33 33 

 33 33 









Guinea-pig. 





Aug. 12... 

 „ 12... 



2384 

 2385 



Monkey 2340... 



2340... 



13 

 23 



Eat. 



78 

 114 



Died of Strain I. 



33 )3 



Aug. 12... 

 „ 12... 



2378 

 2379 



Monkey 2340... 

 „ 2340... 



6 

 6 



35 

 44 



Died of Strain I. 



33 33 



* Duration includes the days of incubation ; it dates from day of inoculation. 



