89 



WiLHELMi (J). Versuche zur Bekampfung der in Kot, Mist und 

 anderen organischen AbJallstoffen lebenden Muscidenbrut, insbe- 

 sondere der gemeinen Stechfliege, mit Kalisalzen und anderen 

 Cliemikalien. [Experiments with Potassium Salts and other 

 Chemicals against the Eggs and Larvae of Muscid FHes, especially 

 Stomoxys calcitrans in Faeces, Dung and other organic Waste.] — 

 Mitt. Landesanstalt Wasserhygiene, Berlin-Dahlem, 1920, no. 25, 

 p. 190. (Abstract in Biedermann s Centralbl., Leipsic, 1, no. 2, 

 February 1921, pp. 71-73.) 



These laboratory experiments were made with Stomoxys calcitrans. 

 Musca domestica, and Lyperosia irritans ; fresh cattle dung was used, 

 the several chemicals being mixed with it. Slaked lime, borax and 

 gas lime, added at the rate of t^^^, ^io. and J^j, respectively, killed the 

 larvae and prevented the development of the eggs in cattle dung. 



BouiLLiEz (M.). Au Sujet de la Communication de M. Muraz sur un 

 Foyer de Trypanosomiase humaine a Tchoa (Tchad). — Bull. Soc. 

 Path. Exot., Paris, xiv, no. 2, 9th February 1921, pp. 57-58. 



With reference to Muraz's communication [R.A.E., B, ix, 58], the 

 author points out that this centre of human trypanosomiasis was 

 reported by him in 1916 [R.A.E., B, iv, 84]. There is no doubt, 

 however, that sleeping sickness has increased considerably in that 

 locality since that date. 



Sergent (Ed.) & Sergext (Et.). Etude experimentale du Paludisme. 

 Paludisme des Oiseaux [Plasmodium reUctum). — Bull. Soc. Path. 

 Exot., Paris, xiv, no. 2, 9th February 1921, pp. 72-78. 



For the purpose of an experimental study of preventive quininisation 

 the authors made use of Plasmodium relictum, causing avian malaria. 

 They find that preventive quininisation gives the results of acclima- 

 tisation to the disease. It permits the avoidance of the acute stage, 

 only allowing a latent infection that confers a relative immunity. 



Preventive quininisation is useless before there is danger of infection, 

 but should be practised immediately there is any risk of infective 

 mosquito bites, and it should be continued without interruption. 



Several other drugs were tried, but none gave the results obtained 

 with quinine, either in preventive or curative treatment. 



In commenting on this paper, M. Laveran regrets the use of the term 

 ■"avian malaria," as it appears certain tha.t P. relictum is distinct from 

 the organism causing malaria. 



Pringault (E.) & Vigne (P.). Sur quelques Cas de Parasitisme par 

 Rhipicephalus sanguineus, Latreille, 1806. — Bidl. Soc. Path. 

 Exot., Paris, xiv, no. 2, 9th February 1921, pp. 91-93. 



A case of pruritus evidently due to Rhipicephalus sanguineus, Latr., 

 found on the patient, is recorded from France. The patient stated 

 that other persons on the same farm were also affected, and that the 

 trouble appeared after a wild boar had been killed that was covered 

 with similar ticks. 



Some authors maintain that the pruritus produced by ticks is due 

 to the rostrum being left in the skin, but the three specimens examined 

 were intact, and furthermore the parts of the body that were affected 

 •were not those on which the ticks were found. 



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