NAGANA IN GERMAN EAST AFPJCA. 259 



its larger size, it being almost twice as large as any of the 

 others. In general appearance it conforms closely to the 

 others in possessing an oval protoplasmic body, a longitu- 

 dinal fin-like membrane, and a single flagellum. 



" This new Trypanosoma was lately discovered by 

 Dr. A. Theiler, who is in charge of the Bacteriological 

 Laboratory of the Medical Officer of Health, Pretoria, 

 Transvaal." 



Dr. Theiler "found the parasite for the first time in 

 the blood of a young ox which had just recovered from 

 an attack of rinderpest. ..." " He found that the new 

 Trypanosoma only infects cattle. Horses, dogs, goats, 

 rabbits, and guinea-pigs are all immune, neither showing 

 symptoms nor the presence of the parasites in the blood." 



XXV. 1902. J. E. Dutton, M.B. 



"Preliminary Note upon a Teypanosome Occur- 

 ring IN THE Blood op Man" (Thompson Tales Laloratori/ 

 Reports, Liverpool, Vol. IV., Part II., pp. 455-468, 

 Plates v., VI., Charts 1-4). 



XXVI. 1902- Dr. Franz Stuhlmann. 



"NOTIZEN UBER DIE TsETSEFLIEGE (GlOSSINA MORSITANS, 

 WeSTW.) UND DIE DURCH SIE UBERTRAGENE SURRAHKRANK- 



heit in Deutsch-Ostafrika " {Bericlde uber Land- und 

 Forstwirtscliaft in Deutsch-Ostafrika. Herausgegeben vom 

 Kaiserlichen Gouvernement von Deutsch-Ostafrika, Dar- 

 es-Salam. 1 Bd. Heft 2, pp. 137-153, Tafel I and II, 

 and four figures in the text. Heidelberg, June, 1902 : 

 . , Carl Winter's Universitatsbuchhandlung). Tafel I gives 



rough figures of Glogsina morsitans, and details, and 

 also figures of several species of Trypanosoma. Tafel II 

 consists of a sketch-map of German East Africa, on which 

 places known to be, or suspected of being, centres of 

 " Surra," and roads on which bullock-teams have been 

 attacked by the disease, are marked in red. 



The author commences by stating that a portion of 

 the mortality among cattle in German East Africa was 

 determined by Koch, in 1897, to be due to Surra. He 

 proceeds to discuss the true part played by the Tsetse-fly, 

 and rejects the idea tJiat it is merely a passive carrier of the 

 hsematozoon. 



[Translation.] "The investigations upon Texas fever 



s 2 



