Reports to the Foreign Office. 149 
Antelope, etc., although multiplying in their blood, but that it is deadly to 
introduced domesticated animals. Hence, it is supposed, it flourishes in 
the wild game and is more abundant among them than it would be if its 
presence caused death. I am inclined to believe this theory correct, but it 
has not been properly tested. 
Before the destruction of Buffalo in the vicinity of herds of domesti- 
cated cattle is authorised, it ought to be dearly shown by experiment and 
observation of competent medical men that the Buffalo harbours the 
parasite, or at any rate that it can harbour it without being killed off as 
are domesticated animals. It would be a matter of small expense, in 
comparison with the enormous pecuniary interests involved, for the 
British South Africa Company to employ a medical authority to experi- 
ment on wild Buffalo, captured and kept in a paddock for the purpose of 
settling the question. 
And it seems to me that authority to destroy the Buffalo should not be 
granted to the Company until they have furnished satisfactory scientific 
evidence of the harbouring of the Nagana parasite by the Buffalo. 
I am, Sir, 
Your most obedient humble servant, 
(Signed) E. Ray Lankester. 
Foreign Office, 
Ibtli October , 1901. 
Sir, — With reference to your letter of the 24th June, I am directed 
by the Secretary of State for Foreign Affairs to transmit to you for your 
information the accompanying copy of a despatch from His Majesty’s 
Commissioner in the East Africa Protectorate relative to the connexion 
between Tsetse-fly and the Buffalo. 
I am, Sir, 
Your most obedient humble servant, 
(Signed) Martin Gosselin. 
Professor E. Ray Lankester. 
Mombasa, 
6th September, 1901. 
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 
MacClellan 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. 
