VI 



It is fitting that this publication should be issued under the aegis 

 of the Imperial Bureau of Entomology, for the Committee of that Body 

 have always taken a special interest in furthering research in 

 connection with Tsetse-flies. 



A few years ago they submitted to the Colonial Office a Report 

 emphasising the need for more experimental work on the life-history of 

 Glossina ; and, indeed, it is only by an intimate knowledge of its 

 life-history that we can ascertain with any certainty how best to attack 

 and defeat its deadly activities. 



This Report undoubtedly led to an increased interest being taken in 

 the problem by the various African Governments concerned ; and 

 special investigators are now at work in Nigeria, Uganda, Tanganyika 

 Territory, Nyasaland, Rhodesia, and Zululand. 



It is to be hoped that the present publication may prove to be of 

 real use to those who directly or indirectly are engaged in investigation 

 by supplying them with an epitome of the work that has already 

 been done elsewhere in various directions, by suggesting new lines 

 of investigation, and by stimulating them to test and to amplify the 

 results obtained by others. 



BUXTON 



(Chairman of the Committee of the Imperial Bureau of Entomology}. 



