TSETSE-BELT IN BRITISH EAST AFEICA. 291 



Mombasa; 



6tli September, 1901. 



Sir Charles Eliot, K.C.M.Gr., C.B., to the Marquess of 

 Lansdowne, K.G., etc, etc. 



My LoRD,^In- reply to your Lordship's despatch, No. 259 

 of July 20th, respecting the connection between the Tsetse-fly 

 and the Buffalo, I have the honour to transmit letters from 

 Messrs. Stordy and McClellan and Doctor Radford. 



After reading this correspondence and discussing the question 

 with other persons, my own opinion is that where there are 

 Buffaloes, Tsetse-flies are usually (but not always) found, but that 

 the flies also occur in districts where there are no Buffaloes. 

 Hence it would appear that the Buffalo cannot be the only host 

 of the parasite which the Tsetse-fly introduces into the blood of 

 domestic animals with fatal results. 



I have, etc. 

 (Signed) C. Eliot. 



Nairobi, 



East Africa Protectorate, 



3;-(Z September, 1901. 



R. J. Stordy, M.R.C.V.S., to Sir Charles Eliot, K.C.M.G., 

 C.B., His Majesty's Commissioner and Consul Genei'al, 

 Mombasa. 



Sir, — T beg to acknowledge receipt of a copy of the 

 correspondence re Tsetse-fly and the preservation of the Buffalo 

 which you forwarded to me for my opinion, and I have the 

 honour to transmit to you herewith my observations on the 

 subject. 



The Tsetse-fly belt of British East Africa, exclusive of Juba- 

 land, may be said to extend from Mtoto Andei to Simha, a 

 distance of roughly ninety miles ; it is situated in a densely- 

 wooded, low-lying part of the country, about 3000 feet to 3400 

 feet above sea level. 



Driajani, an old camping ground, within this area, was 

 considered by the late Captain Haslam and myself to be the 

 most dangerous place for fly on the old transport i-oute, but 

 strange to say it was practically devoid of game of any kind. 



In my opinion, Buffalo and other big game are not the only 

 factors in the Tsetse-fly theory, and we must first consider the 

 question of climate and humidity before we condemn the Bos 

 caffer as the true and only source of the Tsetse-fly disease. 



I believe that the distribution of the fly is entirely influenced 



