200 LABOULBENE'S THEORY OF TSETSE-DISEASE. 



Opinion expressed that the Tsetse is not poisonous 

 in itself. The ravages of the Tsetse or of the species of 

 Glossina appear to the author to be due to septic matter 

 derived by the insect from unhealthy animals or from 

 carcases, and inoculated from one animal to the other 

 (p. Ixxxviii). 



A communication read from R. P. Leroy, according 

 to which the Tsetse is very troublesome in the dry and 

 sterile plain between XJkami and Nguru (inland from 

 Bagamoyo), on which buffaloes, zebras, giraffes, and 

 antelopes abound, while there are even a few elephants. 

 Leroy states that a Masai army with a herd of 300 cattle, 

 camped on the plain in order to attack Mrogoro, was 

 forced to beat a precipitate retreat in consequence of their 

 cattle having been put to flight by the Tsetse. Laboul- 

 bene explains that he did not attribute the effects of the 

 bite of the Tsetse to the fly having previously settled on 

 putrefying carcases. He adds : "I think that it carries 

 with its proboscis septic matter drawn from diseased 

 animals, and communicates it to others that are healthy, 

 the result of which is illness and possible death. It 

 remains to be explained why the bite, which is said to 

 be deadly to cattle, is not so to human beings " 

 (p. clviii). 



103. i888. A. Laboulbene. 



" Une Mouche Tse-Tse de l'Afrique tropicale " 

 {Revue Scientifique, Troisieme Serie, Tome XV, p. 700). 



Contains no fresh facts : according to a foot-note, the 

 article is an extract from a communication made by the 

 author to the Academie de Medecine, at a meeting held 

 May 29, 1888. [The title of this communication is, 

 " Sur une mouche tse-tse de l'Afrique Australe" : Bulletin 

 de r Academie de Medecine, Paris, 1888, 2" Serie, XIX, 

 pp. 721-724.] 



104. i888. 



*' Dr. Holub's Journey in the Batoka Country " 

 {Proceedings of the Boyal Geographical Society and Monthly 

 Record of Geography. New Monthly Series. Vol. X., 

 p. 647.) 



Tsetse-fly in the Batoka country, 1886. 



" He [Dr. Holub] says the country of the Batoka is 



