log 



Allen (A. H.). Mosquito Eradication. — U.S. Naval Med. Bull., 

 Washington, D.C., xvi, no. 1, January 1922, pp. 1-8, 4 plates, 

 1 map. 



The work described was done at the Philadelphia Navy Yard, 

 where mosquitos have been very prevalent in summer, by oiling 

 and ditching, pending the filling in of land where pools form. 



The principal species of mosquitos in Southern Philadelphia are : 

 Culex pipiens, C. saxatilis, Aedes sollicitans, A. sylvestris, A. cana- 

 densis, Psorophora ciliata and Anopheles punctipennis. The last- 

 named is not numerous ; it breeds along streams, around blades of 

 grass, and in rain barrels. C. pipiens is the ordinary house mosquito. 

 C. saxatilis has the same breeding-places (flower-pots, milk bottles, and 

 other accidental water containers). Aedes sollicitans and A. sylvestris 

 breed in brackish water and salt water marshes. A. canadensis is 

 a large woodland species imported from Michigan in shipments of 

 lumber in 1917 ; it is found in spring and breeds in hollow logs, under 

 dead leaves, etc. P. ciliata is the first mosquito to appear and disap- 

 pear, and its occurrence is always an indication that other species 

 are present, as it preys upon all of them until they are exterminated, 

 when it resorts to cannibalism. It breeds in ditches and stagnant 

 water. At Philadelphia it occurs from March to November. 



Randier (P.). La Chloropicrine. Ses Propri^tes physiques et chim- 

 iques, sa Toxicite vis-a-vis des Etres vivants, ses Applications. 

 Chloropicrinage du Navire Atelier russe "Kronstadt." — Arch. 

 Med. & Pharm. Nav., Paris, cxn, no. 1, January-February 1922, 

 pp. 56-78. 



From the results obtained in fumigating a Russian vessel of 16,000 

 tons, chloropicrin seems to be eminently suitable for naval conditions. 

 About 650 lb. of chloropicrin was used, and a total destruction of 

 cockroaches, fleas and bugs was effected. 



Sergent (Ed.) & DoNATiEN (A.). Les Stomoxes, Propagateurs de la 

 Trypanosomiase des Dromadaires. — C.R. Hebdom. Acad. Sci., 

 Paris, clxxiv, no. 8, 20th February 1922, pp. 582-584. 



Stomoxys sp. is recorded as transmitting trypanosomiasis of camels 

 in North Africa. The transmission is mechanical and has been proved 

 experimentally. Infection only occurs when the fly attacks a healthy 

 animal immediately after biting an infected one. 



Caballero (A). Las Especies del Genero Chara y las Larvas de los 

 Mosquitos. [Plants of the Genus Chara and Mosquito Larvae.] 

 — Anales Inst. General y Tecnico de Valencia, no. 10, pp. 5-17. 

 (Abstract in Trop. Dis. Bull., London, xix, no. 2, February 1922, 

 p. 113.) 



The author has satisfied himself in the field that three species of 

 Chara, namely C. foetida, C. contraria and C. hispida, possess the 

 power of destroying mosquito larvae [cf. R. A.E., B, viii, 61]. 



