70 



in an arsenical solution two or three times at intervals of 21 days is 

 the method practised, the solution consisting of 24 lb. sodium car- 

 bonate, 8 lb. arsenic trioxide, 1 U.S. gal. pine tar, and water up to 

 500 gals. 



Carnegie Dickson (W. E.). Mites as internal Parasites o? Man.— 



//. Trop. Med. & Hyg.. London, xxiv, no. 3, 1st February 1921, 

 pp. 25-27, 1 fig. 



Two cases of infection of the urinary tract in man by mites are 

 the subject of this note. In one the mites concerned were 

 identified as Tyroglyphus [Aleurohiiis) farinae, DeG., and in the other, 

 as Tarsonenvus sp. 



LouGHNAN (W. F. M.). Seven-day Fever in Aden.— J/. R.A.M.C., 

 London, xxxvi, no. 2, February 1921, pp. 137-141. 



On the Aden littoral seven-day fever appears to be a very definite 

 and distinct disease. In British Arabia it is endemic, and attacks 

 Europeans and Orientals with equal severity. 



There may be some relationship between the disease and the climatic 

 temperature and atmospheric humidity ; possibly the connection 

 is an entomological one. The fever appears about the end of April 

 and is present until the end of September. There are no Anophelines 

 within 10 miles. Culex fatigans and Stegomyia are present throughout 

 the year, chiefly breeding in shallow brackish wells, and in increased 

 numbers from the end of May to the end of September, when the fever 

 is most prevalent. 



Pest Remedies and Stock Dips. — //. Dept. Agric. Union S. Africa, 

 Pretoria, ii, no. 1, January 1921, pp. 56-58. 



Under Act No. 21ofl917a number of regulations have been framed 

 in connection with the sale of stock dips, and it is proposed that they 

 shall come into force from 1st April 1921. They deal with the regis- 

 tration of stock dips, the information to be placed on the labels of 

 receptacles of such preparations, and the sale of such preparations. 

 Any person dealing in a stock dip not registered under his own 

 name or brand must, when required to do so by a competent authority, 

 produce a statement of its composition guaranteed under these 

 regulations or other satisfactory proof of registration. 



Pringault (E.). Presence de Spirochetes chez Phlehotonius per- 

 niciosus, Newstead. — C. R. Soc. Biol., Paris, Ixxxiv, no. 4, 29th 

 January 1921, pp. 209-210. 



A spirochaete has been found in PJileboiomus perniciosiis, Newst., 

 in the Marseilles region, and the name of Spirochaeta phlebotomi is 

 suggested for it, as it appears to be a distinct species. 



VAN Saceghem (R.). La Trypanosomiase du Ruanda. — C. R. Soc. 

 Biol., Paris, Ixxxiv, no. 5, 5th February 1921, pp. 283-286. 



Evidence is adduced that appears to the author clearly to establish 

 the fact that pathogenic trypanosomes may be transmitted in nature 

 by flies other than Glossina. 



