AN UNKNOWN ANIMAL ON THE UASINGISHU 123 
7. Throughout South Central and Central Africa there are 
large areas where game of all kinds is plentiful, yet there is no 
fly. Conversely, there are large areas where game is exceedingly 
scarce — and even absent — yet the fly abounds. There are, 
again, areas where game is plentiful, but where the fly exists 
only in comparative scarcity, a fact suggesting that some 
natural condition is not entirely favourable. There are dis- 
tricts in which the fly exists in immense numbers in certain 
restricted and well-defined areas, although game is plentiful 
throughout the district. The fly does not follow the game, 
which passes at will backwards and forwards through these 
restricted areas. It may incidentally be mentioned that 
these areas are clothed in rank vegetation. 
8. It is abundantly clear that the theory of the inter- 
dependence of game and tsetse fly is based upon false pre- 
mises. In any event, the extermination of game will not 
avail to make fly-infested districts permanently habitable by 
domesticated animals. 
9. The sub-committee confidently believes that scientific 
investigation will shortly discover immunising serum against 
nctgana, and deprecates any attempt in the meantime to 
exterminate game in the fallacious belief that such action will 
render 4 fly country 5 habitable by domesticated animals. 
AN UNKNOWN ANIMAL ON THE UASINGISHU 
By Geoffkey Williams 
I am asked to describe the strange beast that I once saw 
up on the Uasingishu, and it is with some diffidence that I 
make the attempt since experience has taught me that descrip- 
tions of unrecorded animals do not meet with much credence. 
However, as I now hear that it has been seen again, I feel 
encouraged to do the best I can. 
Several years ago I was travelling with a cousin on the 
Uasingishu just after the Nandi expedition, and, of course, 
