causing Disease in Man in Nyasaland. 131 



Susceptibility of Animals to the Naturally Infected Dog Strain. 



I. Strain I, Dog 48. 



Table I. 



Date. 



No. of 

 expt. 



Source of virus. 



Period of 

 incubation, 

 in days. 



D uration 

 of disease, 

 in days.* 



Eemarks. 









Cattle. 







1912. 













Mar. 6... 



314 



From Dog 210 



— 



— 



Never showed trypanosomes. 



,, 6... 



315 



„ 210 







April lo... 



314 



T7 . T} j_ Oil 



12 





Still alive alter <33o days. 



,, 13... 



315 



„ 311 







Never showed trypanosomes. 









Goat. 







Mar. 6... 



275 



Prom Dog 210 



— 



— 



Never showed trypanosomes. 



„ 6... 



277 



„ 210 



— 



— 



April 5 . . . 



275 



'From Eat 312 



24 





>» )s j> 

 Accidentally killed. 







„ 5... 



277 



312 





— 



Never showed trypanosomes. 



„ 20... 



427 



„ 392 



10 





Still alive after 277 days. 

 >) >> )> 



„ 20... 



432 



392 



26 



— 



1913. 













Mar. 21... 



2008 



1991 







NT 1 i . 



1.N ever snowed trypanosomes. 



„ 21... 



2009 



1991 



27 





Still alive after 251 days. 



„ 21... 



2010 



1991 





— 



Never showed trypanosomes. 



„ IL... 



2011 



„ 1991 



17 





Died of pneumonia. 



„ 21... 



2012 



1991 





— 



Never showed trypanosomes. 



„ 21... 



2013 



1991 







., 21... 



2014 



1991 



24 



— . 



Still alive after 251 days. 

 >> )i j. 



„ 21... 



2015 



1991 



17 



— 



„ 21... 



2016 









Never showed trypanosomes. 









„ 21... 



2017 



1991 







— 











Sheep. 







1912. 













April 20... 



456 



From Eat 392 



5 







Still alive after 340 days. 



„ 20... 



457 



„ 392 



10 



64 



Died of Strain I. 









A 



Antelope. 







1913. 













May 21... 



2059 



Prom Eat 2024 



13 



_ 



Still alive after 250 days. 









Monkey. 







1912. 













Mar. 6... 



318 



From Dog 210 







Never showed trypanosomes. 



April 5 . . . 



318 



From Eat 312 







„ 20... 



50 



From Dog 317 









20... 



453 



From Eat 392 









Oct. 29... 



1533 



„ 1491 







Still alive after 148 days. 



„ 29... 



1534 



1491 



6 





Nov. 22... 



1629 



From Monkey 1534... 







Never showed trypanosomes. 



27... 



1630 



1534... 



10 





Still alive after 124 days. 



# Duration includes the days of incubation : it dates from the day of inoculation. 



