66 



Eegnault (F.). La Culture des Lentilles d'Eau dans la Lutte centre 

 le Paludisrae. — Bull. Soc. Path. ExoL, Paris, xii, no. 10, 10th 

 December 1919, pp. 735-736. 

 Experiments made in Corsica in 1917 show that mosquito larvae 

 were killed by asphyxiation in every case where duckweed [Lemna] 

 was propagated. As soon as the duckweed disappeared, the re- 

 appearance of mosquito larvae was noticed. The cultivation of this 

 plant should prove a useful remedial measure and cheaper than oiling. 



Prates (M. M.). La Myiase Oculaire de I'lle de Sal (Arehipel du 



Cap VeH).~Bull. Soc. Path. Exot, Paris, xii, no. 10, 10th 

 December 1919, pp. 736-740, 1 fig. 



The work of previous authors in connection with ocular myiasis in 

 man is reviewed. It is generally caused by Rhinoestrus pvrpiireus 

 (nasalis) which normally deposits from 8 to 50 larvae in the eyes of 

 equines, and Oestrus ovis which, although occasionally oviparous, 

 generally deposits larvae in the nasal cavities of sheep and goats. 

 Both species are recorded as accidentally infesting man. The larvae 

 may occur in man in the throat or nasal fossae, but the eyes are the 

 most common seat of infestation. The patient suffers from acute 

 irritation lasting about a fortnight. 



Ocular myiasis due to Oestrus ovis is particularly prevalent in the 

 island of Sal. The natives prevent larviposition on the lips by smoking 

 or chewing tobacco. Infestation of the throat can be alleviated by 

 draughts of warm olive oil or by means of a highly spiced diet. Further 

 investigations are to be made to ascertain whether the fly deposits 

 eggs or larvae on the affected organs. 



Brumpt (E.). Existence de la Spirochetose des Bovides au Bresil. 



Transmission de cette Affection par la Tique, Margaropus 



australis (Fuller).— £«/?. Soc. Path. Exot., Paris, xii, no. 10, 



10th December 1919, pp. 748-757, 1 fig. 



Experiments with ticks, Boophilus (Margaropus) anrmlatus australis 



Fuller, obtained from Brazil from normal healthy cattle are described. 



The progeny of these ticks produced a mixed infection of Piroplasma 



higeminum and P. argentinum in a calf. In previous experiments 



B. annulatus australis from Brazil and B. annulatus calcaratus from 



Algiers, Tunisia and Morocco, that had been reared on cattle infected 



with various anaplasms and piroplasms never transmitted them to 



susceptible French cattle. During the present observations 9 



successive generations of the ticks were reared ; of these some lost 



their infection with Piroj)lasma higeminum at the third aud with 



P. argentinu7n at the sixth generation. 



From the first to the seventh generation the ticks did not transmit 

 spirochaetosis to any animals upon which they were fed, as far as 

 could be ascertained by simple direct examination. The larvae from 

 female ticks of the 7th generation Avere fed on a 4-year old Breton 

 cow without producing any abnormal symptoms, but those larvae 

 from adult ticks taken from this cow produced an infection of 

 Spirochaeta theileri within 24 hours on a similar animal aged 10 years. 

 Although the author does not admit that spirochaetosis of cattle is 

 entirely absent from France, he is of opinion that the virus was 



