414 SPECIFIC MICRO-ORGANISMS 



rendered very uncertain by the work of Wenyon^ and the Ser- 



FiG. 170. — Conorhinus megistus, the insect carrier of Schizotrypanum cruzi. (From 



Dofiein after Chagas.) 





Fig. 171. — Leishmania donovani in the juice obtained by puncture of the spleen in 

 kala-azar. (From Doflein after Donovan.] 



gents. ^ The latter investigators were able to effect experi- 

 mental transmission by means of the dog flea, Ctenocephalus canis, 



^ Journ. Land. Sch. Trap. Med., 1912, Vol. II, pp. 13-26. 



''Sargent (Edm. & Et.), L'Heritier and Lemaire, Bull. Soc. Path, Mxot., 1912, 

 Vol. V, pp. S9S-S97- 



