BELIEF or NATIVES AT LOKOJA. 243 



the mounts and transport animals of the Royal Niger 

 Constabulary at the Lokoja headquarters has now been 

 identified as the baneful work of the Tsetse-fly." 



" • • • the Lokoja natives, knowing nothing of microbes 

 and bacteria, assei't that the fly extracts from a certain 

 small red monkey the virus with which it inoculates the 

 bush cow or dwarf buffalo." 



158. 1899. D. Sharp. 



The Cambridge Natural History. " Insects," Part II. 

 (London: Macmillan & Co., Limited), pp. 512-513. 



Notes on Glossina morsitans, with woodcuts of perfect 

 insect, larva, and pupa (the two latter after Bruce). 



"Although it has been supposed that the Tse-tse-fly 

 is a formidable obstacle to the occupation of Africa by 

 civilised men, there is reason to suppose that this will not 

 ultimately prove to be the case. It only produces disease 

 when this pre-exists in animals in the neighbourhood ; 

 only certain species are liable to it ; and there is some 

 evidence to the eff*ect that even these may in the course 

 of a succession of generations become capable of resisting 

 the disease inoculated by the fly. As long ago as 1878, 

 Dr. Drysdale [vide supra, 58] suggested that this fly only 

 produces disease by inoculating a blood-parasite, and all 

 the evidence that has since been received tends to show 

 that his idea is con-ect " (p. 513). 



159. 1899. F. V. Kirby. 



" Sport in East Central Africa, Being an Account 

 of Hunting Trips in Portuguese and other Districts of 

 East Central Africa" (London: Rowland Ward, Ltd.), 

 p. 17. 



On the right hank of the InJcambedsi Biver, near Chinde 

 (1894). — ^"The heat was stifling and oppressive in the 

 dense acacia thickets, where all the trees wore the apparel 

 of approaching summer; and also in the bushy hollows 

 between the rough and stony ridges, where, to add to our 

 discomforts, Tsetse-flies swarmed in such numbers that 

 we had to use small branches to keep them off"" (p. 17). 



160. 1899. Sir H. H. Johnston, K.C.B. 



"A History of the Colonization of Africa by 

 Alien Races " (Cambridge : The University Press). 



R 2 



