is a good deal of evidence for tlie possibility tliat certain night- 

 biting species of mosquitos, and particularly Stegoinyia fasciata 

 and Culex fatigans, may under such conditions and by a succes- 

 sion of bites, repeated night after night, constitute a danger. He 

 is himself convinced that the general health of the lepers is 

 greatly improved when they are carefully protected from mos- 

 quito bites. 



Lebceuf (A.). Dissemination du bacille de Hansen par la mouche 

 domestique. [Dissemination of the bacillus of Hansen by the 

 house-fly.] — Bull. Soc. Path. E.xot., v, no. 10, 1912, pp. 

 860-868. 



The author, after citing the principal writers on the subject, 

 mentions the experiments of D. H. Currie in Hawaii with Musca 

 domestica, Sarcojjhaga pallinervis, Sarcophaga barbata, VohiceUa 

 obesa and an undetermined species of Lucilia, and also those of 

 T. L. Sandes. In the author's experiments the flies were allowed 

 to settle upon an ulcer and after they had rested there a certain 

 time they were examined, and as a result he found that a large 

 proportion of the flies contained Hansen's bacillus in their in- 

 testines. He obtained in all 19 positive results. The question as 

 to how far from a possible source of infection flies may be found 

 carrying the bacillus, was investigated hy the author who dis- 

 sected 23 flies collected in his own house, which was distant 150 

 metres from a hospital reserved for very advanced cases of 

 leprosy. In none of them did he discover the bacillus, and he 

 arrives at the following general conclusions : — 



(1) Musca domestica is capable of absorbing enormous quan- 

 tities of Hansen's bacillus; (2) the bacillus is found in large 

 quantities, apparently in perfect condition, in the excrement of 

 infected flies; (3) there does not appear to be any multiplication 

 of the bacillus within the fly, but the microbe does not seem to 

 degenerate; (4) it is possible that flies passing from a leprous 

 patient and depositing their excrement upon raw cutaneous 

 surfaces of otherwise healthy persons, living in the immediate 

 neighbourhood of leper patients, may disseminate the bacilli in 

 this wa3\ 



EoDHAiN (J.), Poxs (C), Vaxdexbeadex (J.), & Bequaert (J.). 

 Note sur les trypanoses animales de Haut-Katanga. [Notes on 

 animal trvpanosomiasis in Upper Katanga.] — Bull. Soc. 

 Path. Exot., V, no. 10, 1912, pp. 819-822. 



One of the authors whilst residing in Elizabethville, Belgian 

 Congo, took the opportunityof examining a large number of animals 

 from Rhodesia to be used as food or as draught animals. Since the 

 foundation of the new capital, G. morsitans, which was formerly 

 very numerous on the site of the present town, has disappeared 

 in consequence of the clearings which have been made, but when 

 the boundaries of the cleared areas are approached the flies are 

 still found in large numbers. It is therefore not surprising that 



