334 DR. W. YORKE OX 



I feel sure that Dr. Yorke will initiate a most interesting and 

 valuable discussion, and no doubt throw new light on this im- 

 portant and mysterious subject. But I earnestly deprecate any 

 too hasty or premature a conclusion on the matter, and before all 

 authorities have been fully heard and consulted. If it is conclu- 

 sively shown that Big Game undoubtedly spread Sleeping 

 Sickness, then Big Game must go. On the other hand, it would 

 be an irreparable calamity of the worst kind to permanently 

 injure or destroy the indigenous wild life of Afi-ica to no purpose^ 

 and this might be the result of premature action. 



Yours truly, 

 47 Chester Square, (Signed) HENRY SETON-KARR. 



London, S.W. \ o / 



March 18th, 1913. 



Sir ALFRED SHARPE, K.C.M.G., LL.D., remarked : " The 

 question appears to resolve itself into the following heads : — 



" 1, What varieties of tsetse are proved to be carriers of the 

 trypanosomes of any form of Sleeping Sickness, and 

 (which is even more important) what other carriers are 

 there ? 



" 2. Does tsetse really depend entirely on game for its 

 existence ? 



" 3. Assuming even that tsetse are the only distributing 

 agents of all forms of Sleeping Sickness — and that fly 

 depends solely on game for its existence — is it possible 

 to destroy every form of life upon which tsetse can 

 exist ? 



" There is a desire on the part of a certain section of the 

 European population of our African possessions to do away with 

 all i-estrictions on the killing of game. This is fomented in some 

 cases by the local press ; and every argument is made use of 

 which may further their object. In most cases those who carry 

 on this local agitation ai"e ignoi'ant of the actual conditions 

 governing the existence of tsetse, and its relation to gam;e and to 

 Sleeping Sickness. 



" 1. With regard to my first heading. We know that Glossina 

 pcdpalis is considered to be the only distributing agent of 

 Sleeping Sickness in Uganda. G. morsitans is now credited, 

 however, with being a distributer in Nyasaland and N.E. Rhodesia. 

 What we require as regards morsitans is (a) more definite proofs 

 that it distributes under natural conditions, (6) more knowledge 

 as to whether there are not other distributing agents in Nyasaland 

 and Rhodesia, It is remarkable that in these two districts, in 

 spite of the fact that G. morsitans exists not only in the low 

 country but up to a height (in Rhodesia) of 4000 feet above sea- 

 level, Sleeping Sickness has only been found under the same 

 conditions as in Uganda, i. e. in close proximity to the banks of 

 the large rivers and lakes. 



'• 2. As to the second heading, my experience is opposed to the 



