94 Prof. Robert Newsitead on Wanderings in Nyasaland 



travelled and did so much of his work. Having explained the 

 geographical position of the country, he next described the 

 methods of travel to get there, and then dealt in detail with the 

 natives and the animal, vegetable, reptilian and bird life of the 

 country. The tetze fly was the principal subject of his investiga- 

 tions. This fly was the carrier of sleeping sickness, of which 

 there were three types, that in Nyasaland being rapid, and 

 invariably fatal. There were four factors concerned in the 

 spread of sleeping sickness. There was the organism which 

 caused the disease, the tetze fly which transmitted it, the big 

 game, which acted as natural reservoirs for the parasite, though 

 these animals did not themselves suffer by reason of its existence 

 in their blood. Then there was man, who almost invariably 

 succumbed, and that was a remarkable cycle. 



Councillor E. J. Elliot moved a hearty vote of thanks to the 

 lecturer for an interesting, attractive, and fascinating lecture. 

 Tho Society was to be congratulated for having been able to 

 induce Professor Newstead to come and deliver that lecture, and 

 the large attendence proved that Belfast people appreciated a 

 lecture given by a gentleman of such eminence. 



Mr. Nevin H. Foster, M.R.I.A., F.L.S., seconded the motion, 

 which was heartily carried, and suitably acknowledged by Professor 

 Newstead. 



