THE TRYPANOSOMA BRUCII. 



449 



The Trypanosoma Brucii, the Organism found 

 in Nagana, or Tse-tse Fly Disease. 

 By 

 .1. R. Biatlford, F.R.S., 



and 

 H. G. Plimmer, FX.S. 



(From the Laboratory of the Brown Institution). 



With Plates 24 and 25. 



Contents. 



PAGE 



1. Nomenclature ..••••• "^ 

 II. The Adult Form of the Trypanosoma Brucii . . «0 



A. Examined in the Living State . . • ' *^^ 



B. Examined after Fixation and Staining . . .452 



1. Methods *^2 



2. The Appearances of the AduU Trypanosoma . 453 



III. Reproduction of Adult Forms of Trypanosoma Brucii . 455 



IV. Conjugation between the Adult Trypanosomata Brucii . 456 

 V "Aniffiboid" and " Plasmodial" Forms of the Trypanosoma 



Brucii • ^-^S 



VI. The Distribution of the Trypanosoma Brucii, its Varia- 

 tions in Different Animals, and their Resistance to it . . 4G0 

 YII. The Differences between the Trypanosoma Brucii and the 



Trypanosoma found in Sewer Rats . • • 4()4 



VIII. The Micronucleus . • • • • -405 



IX. The Life-history of the Trypanosoma Brucii . • 4r.fi 



X. Explanation of the Plates . • • • .468 



