219 



Hints for the Prevention of Malarial Fevers. — Proceedings of the 

 Third Meeting of the General Malaria Committee held at 

 Madras, lSth-20th Nov. 1912, Simla, 1913, pp. 1T5-1T6. 



This leaflet, intended for general circulation, draws attention 

 to the well-known methods of destroying- mosquitos and prevent- 

 ing their breeding. The use of the mosquito net is inculcated, 

 and also cleanliness, inasmuch as the cleaner the house the fewer 

 the mosquitos. The advisability of having as few curtains and 

 as little drapery as possible is insisted upon ; and the curtains 

 should be light in colour and of a washable material. The bare 

 parts of the skin of children should be anointed on going to bed 

 with eucalyptus oil, menthol or vaseline and carbolic acid, and 

 the use of turpentine soap is advised, as such measures tend to 

 keep off mosquitos. Other details regarding gardens and their 

 drainage, and the prevention of pools are given, and the removal 

 of all excessive vegetation from the neighbourhood of the house 

 is advised, as the latter provides resting places for Anophelines 

 during the day, 



O'GoRMAN Lalor C^. p.). The Aetiological Relationship of Seven- 

 Day Fever. — Proceedings of the Third Meeting of the General 

 Malaria Committee held at Madras, 18tJi-20th Nov. 1912. 

 Simla, 1913, pp. 207-208. 



The author considers that it is possible that seven-day fever is 

 in some way connected with the distribution of Stegoviyia 

 fasciata and suggests a series of experiments which he thinks 

 might be carried out with a view to determining whether this is 

 the case or not. 



HowLETT (F. M.). Stegomyia fasciata. — Proceedings of the 

 Third Meeting of the General Malaria Committee held at 

 Madras, 18th-20th Nov. 1912, Simla, 1913, pp. 205. 



The author gives a general description of the genus Stegoinyia 

 and says that it is rarely, if ever, found away from huma]i 

 habitations and is known in most, if not all, of the largest towns 

 of India. It does not as a rule breed in very dirty water and 

 generally selects water which collects in vessels, pots, tins, etc., 

 though occasionally it is found in the dirty water of open drains. 



Operations against Stegomyia at Pusa have been directed 

 towards the eradication of all natural and accidental breeding 

 places, at the same time supplying artificial breeding places (cut 

 joints of bamboo filled with water) which could be emptied every 

 few days and so controlled. Incaptivitypairingtakes place about 12 

 hours after emergence from the pupa and is followed by a meal of 

 blood. About 50 eggs are laid from 2-4 days later and these 

 begin to hatch 48 hours after oviposition, though some may not 

 hatch until several days later. The larval period is variable and 

 dependent on local conditions, the shortest time observed between 

 hatching and pupation being 5 Hays and the longest 22 days. The 

 author regards a week as a likely average. The pupal stage 

 lasts 2 to 3 days. The adult rarely, if ever, bites after dark, but 

 is particularly' bold and troublesome by day. In the case of other 



