47 



insects that inhabit the bush outside, thai is to say, tsetses ; but 

 that it may also be carried by domestic insects, such as, mosquitos, 

 fieas, lice, etc., for such insects would be much more likely to 

 produce family epidemics of the kind mentioned. He advances 

 another interesting- fact, namely, that tsetse do not exist upon 

 the river-banks between Kangu and Wang'o, at least the natives 

 told him that the fly was exceedingly rare, and Dr. Zerbini, 

 whom the author met in the district, told him that he had never 

 found tsetse on the Belgian bank of the river where sleeping 

 sickness is widely spread. The author himself says that he has 

 never seen these Hies in the Yakoma district in the course of four 

 journeys through it; but that they reappear on the Mbomu, down- 

 stream from Bangassu, from the mouth of the Mbari, and it is 

 precisely from this point that sleeping sickness suddenly ceases. 



He has seen both G. ftisca and G. palpalis on the streams in 

 the interior of the ISTsakara country, also on the Mbaraye river, 

 the Sandigi and the Mbari, where trypanosomiasis is unknown; 

 on the other hand mosquitos abound everywhere, but especially 

 hibernating on the banks of tlie IJbangi from the mouth of the 

 Kotto as far as Lazeda. 



Amongst the prophylactic measures suggested by the author is 

 the entire reconstruction of the huts in certain Yakoma villages, 

 the encouragement of cleanliness amongst the inhabitants, and 

 the use of the mosquito net. He is also strongly of opinion that 

 anything* which tends to lower the vitality of the individual 

 renders him more liable to the disease, and he therefore suggests 

 that the use of fermented liquors and of hemp should be pro- 

 hibited. He further recommends that the employers of labour 

 within the district should do all in their power to prevent com- 

 munication between affected and unaffected villages, as he regards 

 this as one of the most important means by which the disease is 

 spread. 



Human Infection by Dog-Mange.— ^//^ Med. JL, 22nd Feb. 1913, 

 p. 407. 

 Dr. A. Whitfield and Mr. F. Hobday describe in the Veterinary 

 Journal 17 cases Avhich have come under their observation of the 

 transfer of mange from the dog to the human subject, though 

 the parasite is exceedingly difficult to find. Cats are subject to 

 the same disease and the acarus has been demonstrated in crusts 

 taken from them. The ordinary treatment for human scabies is 

 quite efficient. In one case, seen in private practice, the patient 

 had had the disease three times ; he was treated for scabies, but 

 his dog suffered from what was called eczema. 



Nematodes in the Production of Cancer. — Brit. Med. JL, 22nd Feb. 



1913, pp. 400-102. 



In cancerous and other tumour formations certain animal 



parasites have occasionally been observed either in the growth 



itself or in its surroundings, and there is some ground for the 



assumption of a causal relationship. The literature of cancer 



28844 ^ 2 



