189 



sickness and bubonic plague have led to the formulation of measures 

 of control for two diseases,, the former of which had annually claimed 

 very numerous victims in Africa, and the latter more than 1,000,000 

 in India in the course of six months. 



Guarding Soldiers' Camps against Flies and Mosquitos. — Science, 

 Lancaster, Pa., xlviii, no. 1229, 19th July 1918, pp. 63-64. 



In order to protect troops stationed in camps and 'cantonments 

 from mosquito- and fly-borne diseases, there have been assigned to 

 each camp a divisional surgeon, sanitary inspector and sanitary 

 engineer, together with a staff of from 100-200 enlisted men, whose 

 duty is to clear up all mosquito breeding places by the usual draining, 

 ditching and oihng methods, the Federal Pubhc Health Service carrying 

 out a similar programme for a distance of one mile around all camps. 



To prevent the breeding of flies, all buildings in which food is prepared 

 and stored are screened, more than 22,700,000 sq. ft. of screening 

 having been used for this purpose. The entrances of such buildings 

 have also been vestibuled, while the number of fly-traps in use is 6,000. 



Moore (W.). Methods of Control of tlie Clothes Louse {Pediculus 

 humanus [vestimenti]). — Jl. Lab. & Clin. Med., [sine loco], iii, 

 no. 5, 1918, pp. 261-268. (Abstract in U.S. Dept. Agric. Expt. 

 Sta. Record, Washington, Z).C, xxxviii, no. 8, Jmie 1918, p. 765.) 



Investigations show that sachets of naphthahne, camphor, sulphur, 

 paradichlorbenzene and various other chemicals are not successful in 

 eliminating Pediculus humanus (body louse). A powder that is said 

 to be six times as effective for this purpose as the well-known N.C.I. 

 powder consists of 20 gm. talc, 1 cc. creosote, 5 gm. sulphur. This 

 is a dry powder, easy of application and is not irritating. Impregnation 

 of underwear does not appear promising, but a cheesecloth suit 

 impregnated with saturated solution of sulphur in creosote could 

 be successfully worn outside the underwear. Chlorpicrin can be 

 used as a fumigant, penetrating the clothing and kiUing the lice in all 

 parts of the clothing in 15 minutes and the eggs in 30 minutes. By 

 increasing the heat in the fumigation chamber, the time required to 

 kill the eggs could be reduced. 



TowNSEND (C. H. T.). Note on Oviposition of Gastrjophilus nasalis, L. 

 — Canadian Entomologist, London, Ont., 1, no. 7, July 1918, 

 pp. 246-248. 



This note states that Gastrophilus nasalis, L., does not deposit its 

 eggs in the region of the throat of the horse, as has been previously 

 asserted, but hovers directly under the animal's throat and then 

 darts suddenly at the muzzle, where the eggs have been found in the 

 skin of the upper lip. 



Ludlow (C. S.). Trichoprosopon, Theobald (Diptera ; Culicidae).^ 

 Psyche, Boston, Mass., xxv, no. 3, June 1918, pp. 66-68. 



This paper describes Trichoprosopon wilsoni, sp. n., from the Panama 

 Canal Zone. It is closely alhed to T. nivipes, Theo., and may possibly 



