XVII ALONG THE GUASO NVIRO 22- 



of these pests would in a short time prove fatal. I 

 therefore ordered two men to watch each horse and 

 flick off any flies that attempted to settle on them. 

 It was probably owing to these precautions that the; 

 horses escaped, but as none of the other animals 

 died, it is possible that the tsetse-fly of these parts 

 may not be infected. 



Q 2 



