268 SCIENCE IN AFRICA 



in Tanganyika, it has been considered important to bring natives 

 out of scattered villages in fly-infested woodland, and to establish 

 them in large clearings where the fly cannot live. 



The organizing centre for research in British Africa is the Tsetse 

 Fly Committee of the Economic Advisory Council, which, like the 

 Committee on Locust Control, was created in 1925, as a sub- 

 committee of the Committee of Civil Research. Its report (1933) 

 on developments in the treatment of human and animal trypano- 

 somiasis and in tsetse fly control in the period of 1925-31, repre- 

 sents a valuable summary of the position. The special problems of 

 trypanosomiasis and tsetse fly control in Tanganyika, have more 

 recently been under examination by a sub-committee. 



Mr. C. F. M. Swynnerton (1936), late Director of the Tsetse 

 Research Department in that territory, wrote a monumental 

 work on every aspect of tsetse flies in East Africa. The bulk of 

 the volume is devoted to detailed accounts of results of work in 

 Tanganyika, mainly during 1931 to 1934, but the position in 

 other East African territories is summarized. Since this can easily 

 be referred to, only the most important results of work in Tangan- 

 yika will be mentioned here, and the original publications of 

 members of the tsetse department are not included in the biblio- 

 graphy except in a few cases such as the work by Potts (1937) 

 dealing with the distribution of tsetse flies in Tanganyika, pub- 

 lished since Swynnerton's volume. For Southern Rhodesia and 

 Nigeria where there is no such published account the position is 

 described more fully. 



Methods of control by the reclamation of areas which have 

 hitherto been overrun with fly, are being developed in three prin- 

 cipal areas of British Africa: in Tanganyika by the special Tsetse 

 Department under Mr. C. F. M. Swynnerton^; in Southern Rho- 

 desia under Mr. R. W.Jack, the Government Entomologist; and 

 in Nigeria, where there is a Sleeping Sickness Branch of the Medi- 

 cal Department, with Dr. T. A. M. Nash^, as Entomologist. Results 

 from each of these areas are reviewed briefly below. Considerable 

 success has been achieved, but it is important to bear in mind, 



^ While this volume was in the press the tragic news was received that Mr. 

 Swynnerton, together with Mr. Burtt, botanist in the department, were killed in an 

 aeroplane accident near Shinyanga in May 1938. 



" Formerly a member of the tsetse department in Tanganyika. 



