INTRODUCTION. ix 



flies, as well as of the practical effects of their attacks. If, as 

 seems likely, the Tsetse iu Southern Africa, at any rate, is 

 destined to become extinct with the big game and the noi'thward 

 spread of civilisation, the records of earlier struggles with the 

 pest of the pioneer and elephant-hunter will at least possess a 

 historic interest, when the railway-train and the traction-engine 

 have largely superseded the ox-waggon, and the building of the 

 promised hotel at the Victoria Falls has become an accomplished 

 fact. 



ERNEST E. AUSTEN. 



British Museum (Natueal History), 

 London, S.W. 



March 16, 1903. 



