SLEEPING SICKNESS. 337 



to be the case it merely emphasizes the almost hopelessness of 

 attempting to get rid of the transmitting agents, and demonstrates 

 clearly that if anything is to be done it must be in the direction 

 of destroying the reservoir from which Glossina mot'sitmis and 

 the other (hypothetical) vectors derive their infection. 



As I pointed out in my paper, whether the tsetse fly depends 

 entirely on game for its existence is beside the question. This 

 subject iready been most fully discussed on more or less 



theoretical' grounds, and we now require facts, and not further 

 discussion. Definite information on this, as on many other 

 points raised in this discussion, can only be obtained by means of 

 the limited experiment which I advocate. 



In conclusion, may I state my position once more. I have not, 

 as some of the speakers appear to think, made the wild statement 

 that the whole of the game in Tropical Africa should be destroyed, 

 but merely that the restrictions should be removed in " Q.y " 

 areas, and that natives and Europeans should be encoui-aged to 

 kill game in these areas, especially in the vicinity of human 

 habitations. Finally, I am strongly of the opinion that some 

 such limited experiment as I have outlined should be undertaken, 

 as it is only by this means that the data necessary for our 

 guidance in the future can be accumulated. 



