300 



Sir D. Bruce and others. Trypanosorne [Feb. 8, 



Comparison of the Curves from the Five Human Strains. 

 It must also be confessed that, on comparing the five curves one with 

 another, they do not give as much assistance in classifying this species of 

 trypanosorne as was hoped. Curves I and III are alike, and coincide with 

 that prepared by Dr. Stephens from the case of Armstrong in Liverpool, 

 whereas Curves II, IV and V approach more to the type described by 

 Kinghorn and Yorke from the Luangwa Valley. 



Table XIX. — Distribution in respect to Length of 6220 Individuals of the 

 five Human Strains. The trypanosomes have been taken at random from 

 various animals. 





In microns. 



14. 



15. 



16. 



17. 



18. 



19. 



20. 



21. 



22. 



23. 



24. 



25. 



Strains I-V 



1 



10 



| 41 



154 



325 



494 



528 



577 



512 J 525 j 511 



464 



Percentages 





f 



2 



0-7 



2 -5 



5 -3 



8-0 



8-4 



9 -3 



8 "3 



8-4 



8-3 



7-5 





In microns. 



26. 



27. 



28. 



29. 



30. 



31. 



32. 



33. 



34. 



35. 



36. 



37. 



38. 



Strains I-V 



425 



372 



347 



307 



198 



167 



123 



77 



36 



12 



11 



2 



1 



Percentages 



6-8 



6-0 



5-6 4-9 



I 



3-1 



2-7 



2-0 



1 -o 



0-6 



0-2 



0-2 







Chart 13.— Curve representing the Distribution, by Percentages, in respect to Length, of 

 6220 Individuals of the Human Strain of the Trypanosorne causing Disease in Man 

 in Nyasaland. The trypanosomes have been taken from various animals. 





Microns 



13 



14. 



IS 



16 



17 



18 



19 



20 



21 



22 



23 



24. 



25 



26 



27 



2S 



29 



3o 



31 



•32 



■36 



34- 



35 



36 



37 



3S 



1 1 



ID 



w 9 

 ■Of) 8 



5* 

 C 6 



<0 



O 5 



°- 3 

 z 

 i 



















































































































































































































































































































































































































































































































































































































































