causing Disease in Man in Nyasaland. 133 



Table I — continued. 











Period of 



Duration 







No. of 



fcourcc 



of virus. 



incubation, 



of disease, 



Remarks. 





expt. 





in days. 



in days.* 











Guinea-pie — continued. 



1913. 















Jan. 17... 



1775 





1734 







Never showed trypanosomes. 



June 17... 



2228 





2215 







)> )> 



» 17... 



2229 





2215 



6 





Still alive after 246 days. 



July 22... 



2307 





2285 







Never showed trypanosomes. 



„ 22... 



2308 





2285 







)J 13 



» 31... 



2307 





2285 







>> j) 



„ 31... 



2308 





2285 



— 





:> ;j 











Eat. 





1912. 















Mar. 26... 



311 



From Rat 



67 



13 



1 Q 



18 



Died or strain I. 



„ 26... 



312 



„ 



67 



9 



fin 





„ 30... 



391 





67 



9 



*>i 

 zx 



" » 



„ 30... 



392 



» 



67 



9 



Zl 



" » 



April 5 . . . 



407 





312 



10 





" >> 



„ 20... 



462 





407 



10 





" » 



May 25... 



585 





407 



5 





" " 



June 4... 



670 



J, 



585 



6 



Zt 



JJ >: 



July 2... 



786 



,t 



670 



6 



45 



)) )> 



Aug. 2... 



1020 



5) 



786 



6 



6\) 



J) )) 



„ 30... 



1218 



„ 



1020 



3 



94 



» " 



Oct. 19... 



1492 





1218 



9 





)> ;> 



Dee. 12... 



1687 



,J 



1492 



4 



16 



;> » 



» 28... 



1719 



3) 



1687 



9 



32 



>> j) 



1913. 















Jan. 3... 



1734 





1570 



9 



36 





„ 3... 



1735 



„ 



1570 



6 



39 





„ 7... 



1741 



J J 



1719 



4 



15 





„ 9... 



1749 



)> 



1719 



4 



18 





„ 27... 



1814 



>i 



1749 



7 



16 





Feb. 10... 



1855 



)j 



1814 



3 



20 





,, 22... 



1945 



ji 



1855 



5 



17 





Mar. 7... 



1985 



5J 



1945 



6 



20 





„ 25... 



2022 



* 3 



1985 



6 



16 





,; 25... 



2023 





1985 



o 



18 





„ 25... 



2024 



J3 



1985 



6 



19 





April 10... 



2070 





2023 



4 



12 





„ 22... 



2105 



1-3 



2070 



g 



20 





May 7... 



2124 



i) 



2105 



3 



8 





„ 13... 



2134 



From Dog 2054 



2 



12 





» 25... 



2183 





3 



7 





„ 15... 



2168 





2124 



7 



17 





„ 13... 



2133 



From Dog 2054 



6 



10 





June 10... 



2214 



From Rat 



2197 



3 



10 





„ 18... 



2230 



2214 



8 



10 





Aug. 13... 



2389 





2280 



8 



48 





Sept. 6... 



2409 



j) 



2389 



5 



49 





j, J- o . . 







2409 



6 



70 





Oct. 23... 



2425 





2413 



5 



64 





Nov. 12... 



2432 





2425 



6 



38 





Dec. 20... 



2471 



» 



2432 



6 



22 





1914. 















Jan. 16... 



2484 





2471 



7 



16 











Average 



6 2 



28 -6 





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



