156 



Magrou (J.). A propos de la Flagellose des Euphorbes. — Bull. Soc. 

 Path. Veg. France, Paris, ix, pt. 1, January-March 1922, 

 pp. 58-61, 1 fig. 



This paper is a resume of the preceding one. 



Serra (A.). Lepra e " Demodex folliculorum." [Leprosy and D. 

 follicidorum.] — Pathologica, Genoa, xiii, no. 305, 1st August 1921, 

 pp. 361-368, 2 figs. 



The results are given of an investigation of 58 cases of leprosy 

 made in order to obtain information relating to the coexistence of 

 Demodex folliculorum and this disease. They leave the question of 

 the carriage of leprosy by Demodex still unsettled, but in the author's 

 opinion further research appears to be justified. 



DA Matt A (A.). Considerapoes sobre a Dermatobiose (Ura ou Berne no 



Brasil). [Notes on Infestation b}^ Dermatobia.] — Amazonas 

 Medico, Manaos, iii, no. 9, 1920, pp. 2-15, 1 plate. 



This article, written in 1918, is a review of existing data relating 

 to Dermatobia hominis, L. {cyaniventris, Macq.) and to its infestation 

 of animals, chiefly cattle, and man. The author noticed in cattle 

 a secondary cutaneous myiasis due to the larvae of CochUomyia 

 {Chrysomyia) maceUaria, F., infesting the cavities abandoned by those 

 of Dermatobia. 



LuTRARio ( — ). Experiences sur la Diffusion de 1' Acide cyanhydrique 

 dans les Loeaux fermes, et sur 1' Action de cet Acide sur quelques 

 Marchandises (Substances alimentaires et Tissus) et sur quelques 

 Animaux parasites. — Bull. Office Internal. d'Hvg. Publique, 

 Paris, xiii, no. 4, April 1921, pp. 366-376. 



The experiments, of which an account has already been published 

 [R.A.E., B, ix, 30], have been further developed. In a cabin of 

 about 706 cu. ft., 100 gm. of sodium cyanide (88 per cent.), 100 cc. 

 of sulphuric acid (density 64-2) and 200 cc. of water were used; 

 the gas was found to be fairly uniformly distributed therein 30 minutes 

 after its production began. The amount of hydrocyanic acid present 

 averaged 1-37 gm. per cu. m. instead of the theoretical quantity 

 of 2-42. Secondary reactions probably cause this loss. The 

 gas was found in varying quantities in all substances exposed to 

 its action shortly after exposure began. The quantity of gas thus 

 taken up rapidly decreases with exposure to free air, and usually 

 only a minute trace can be found after 24 hours. 



Its insecticidal effect extended to a depth of 2-2^ in. in bags of wheat 

 and flour, Haematopinus suis being used as a check. The larvae 

 of Anopheles and Culex died in a few minutes, and the eggs of these 

 mosquitos did not develop eight days after treatment. The flour 

 beetle, Tenebrio molitor, died in 25 minutes in a test-tube closed 

 with cotton wool, but not in flour, even near the surface, i.e., 2 in. deep. 



LuTRARio ( — ). Troisieme Note sur I'Emploi de I'Acide cyanhydrique 

 gazeux dans les Services de Prophylaxie de 1' Administration 

 sanitaire italienne. — Bull. Office Internal. d'Hyg. Publique, Paris, 

 xiii, no. 5, May 1921, pp. 494-503. 



To get the best results in rat destruction, the sodium cyanide used 

 should be at least of 90 per cent, quality, with not more than 2 per cent. 



