causing Disease in Man in Nyasaland. 



115 



Table III. — Measurements of the Length of 500 Specimens of the Trypano- 

 some of Naturally Infected Dog, Strain I, Dog 48, taken on nine 

 consecutive days from Eat 2471, after passage through rats for two 



years. Series of 46 animals. 



Date. 



No. 

 of 

 expt. 



Animal. 



Method of 

 fixing. 



Method of 



st.fl 1 n 1 n o" 



Average 

 length. 



Tti tni STATIC 

 1 J t J I 1 1 1 ■ i > ' i ] 



Maximum 

 length. 



Minimum 

 length. 



1913. 

















Dec. 



26... 



2471 





Osmic acid 



Griemsa 



29 '5 



OA .A 



o4 



OO *A 



zz u 



33 



26... 



Z4 / 1 





33 



>> 

 >) 



28 '6 



32 '0 



OK *A 



ZD U 



33 



26... 



OA *71 





33 



on ,i 



zy l 



OQ .A 



OK 'fi 



zo u 





27... 



OA >71 



Z4/1 





33 



» 



28 '4 



O 1 «A 



zo u 





27... 



2471 



" 



» 





29 '0 



31 "0 



Of? .A 



Zo U 



33 



27... 



OA*n 

 Z4/ 1 



» 



)' 



no .A 

 Z» U 



OO >A 

 OO U 



in .n 



iy u 



)> 



28... 



2471 





33 



» 



30 "3 



35 '0 



OA .A 



zu u 



) J 



28... 



O A *71 



» 



33 





31 "0 



35 "0 



07 .A 



z/ u 





28... 



Z471 





33 



)) 



OA . O 



Zy o 



OR .A 

 OO U 



OO >A 



ZZ U 



1914. 

















Jan. 



1... 



Z4/ I 





33 



)) 



OQ .*7 



Zo / 



OO .A 



oZ U 



OA -A 



Z4 U 



jj 



1... 



2471 





33 





28 -7 



31 -0 



25 -0 



33 



' 1... 



2471 







)) 



27 '8 



30 '0 



19 - 



33 



3... 



2471 





33 





29 -3 



33 -0 



23 -0 



33 



3... 



2471 





33 



j) 



30 -4 



34 -0 



25 



33 



3... 



2471 









30-4 



34 -0 



26-0 





4... 



2471 





33 





26 -8 



33 -0 



20 -0 





4... 



2471 





33 





27 -6 



32 -0 



19-0 





4... 



2471 





33 



)) 



27 -9 



32 -0 



19-0 



33 



5... 



2471 





33 



)) 



28 -2 



33 -0 



20 -0 





5... 



2471 









26 -6 



32 -0 



18-0 



33 



5... 



2471 





33 



>> 



27 -3 



33 



19 -0 



39 



6... 



2471 





33 



is 



27 -9 



32 -0 



19 -0 



6... 



2471 





33 



J) 



28 -0 



33 -0 



24 -0 



33 



6... 



2471 









28 -7 



33 -0 



20 -0 



33 



7... 



2471 





33 



)> 



26-9 



32-0 



19 -0 













28 -6 



36 -0 



18 -0 



The average length of the trypanosome of Naturally Infected Dog, Strain I, 

 Dog 48, taken from Table's I, II, and III, is as follows : — 



Table IY. — Average Length of the Trypanosome of Naturally Infected Dog, 



Strain I, Dog 48. 



Species of animal. 



Number of 

 trypanosomes 

 measured. 



- 



In microns. 



Average 



length. 



Maximum 

 length. 



Minimum 

 length. 



Ox 



20 



25 



•5 



31 -0 



16 -0 





20 



26 



•4 



30 -0 



21 -0 



Dog 



260 



25 



•2 



35 -0 



15 -0 



Rabbit 



80 



23 



■9 



35 



15 -0 



Rat 



660 



23 



■7 



36 -0 



15 -0 



