192 SUMMARY OF CURRENT RESEARCHES RELATING TO 



iTrypanosomes of French West Africa.* — A. Laveran gives an up-to- 

 date summary of our knowledge of the trypanosonies and the mosquitog 

 which disseminate them, together with their areas of distribution in 

 Senegal, French Guinea, Ivory Coast, Sudan, Lake Tchad, and Congo. 



Trypanosomes and Leishman-Donovan Bodies.! — L. Rogers describes 

 several stages in the development of these bodies from the spleen in 

 cachexia! fevers and Kala-Azar, which show that they belong to the 

 flagellated Protozoa (trypanosomes). He has obtained in cultures from 

 the human spleen, parasites, plasmodial, amoeboid and flagellate forms, 

 similar to those found in a variety of animals suffering from the disease 

 produced by Trypanosoma brucii. 



Trypanosomes in Paddas.f — M. Thiroux notes that the bird Padda 

 oryzivora, inoculated with Trypanosoma pad-dee, is often found to be 

 infected by Halteridium danilewskyi. Experiments show that the pre- 

 sence of these two Protozoan parasites imply double infection. The 

 Trypanosoma is very rare in paddas in natural conditions, the Halteridium 

 is very common. 



Trypanosomes and Tsetse in French Guinea. § — A. Laveran reports 

 that several species of Glossina, or tsetse-fly, are abundant throughout 

 French Guinea, where human trypanomyasis, and one or more analogous 

 equine diseases, are rife. 



* Comptes Eendus, exxxix. (1904) pp. 658-62. 



t Quart. Journ. Micr. Sci., xlviii. (1904) pp. 367-77 (1 pi.). 



X Comptes Rendus, cxl. (1905) pp. 109-10. 



§ Tom. cit., pp. 75-8. 



