18 



experiments, and in all others a mixture of 90 per cent. Culex 

 ^oUicitans and 10 per cent. Culex cantator. Further experiments 

 were made with lice, Pediculus capitis and Pediculus vestimenti, 

 and with bed-bugs, Cime.r lectnJarius. The conclusions arrived at 

 were : — 



(1.) Musca domestica can carry the virus in an active state for 

 several days on the surface of the body and for several hours in 

 the gastro-intestinal tract. 



(2.) The species of mosquitos used did not take up and main- 

 tain in a living state the virus from the spinal cord of monkeys. 



(3.) Lice, P. capitis and P. vestimenti, did not take the virus 

 out of the blood of monkeys or maintain it in a living state. 



(4.) Bed-bugs took the virus from the blood of infected monkeys 

 and maintained it in a living state for a period of seven days. 



Froggatt (W. W.). Agric. Jl. of New South Wales, xxiii. 

 ^^ov. 1912. p. 952. 



The writer recommends one part of formalin and 15 parts of 

 water by measure, placed in a saucer, with a crust of bread 

 sprinkled with sugar in the middle, as an excellent method of 

 killing house-flies. In dealing with a room infested with flies he 

 advises covering up all food and liquid, placing the saucer on a 

 table on a sheet of newspaper or in the brightest place in the 

 room, and the flies will soon die out. 



Strickland (C). Half -Yearly Report of the Travelling Entomo- 

 logist to the Federated Malay States. Unpublished Report to 

 the Secretary of State for the Colonies. 



Mr. Strickland reports his intention of repeating experiments 

 on the introduction of the small fish known as "millions" 

 (Poecihis poeciloides) for the purpose of keeping down Auopheline 

 larvae ; a previous attempt having failed owing to lack of numbers. 

 The question of the utility of Tuba root (the aerial root oiDerris 

 elliptica, one of the Leguminosae) as a larvicide is under investi- 

 gation. It is much used by the Malays for killing fish; Dr. 

 Daniels has already reported on it. A very detailed account 

 is given of the distribution of Auopheline larvae in the neigh- 

 bourhood of the hospital at Seremban. The species found were: 

 Anopheles separatus, harbirostris, karivari, kochii, sinensis, rossi, 

 fuliginosus, palditaeniatus, and three others not identified. The 

 undergrowth in the neighbourhood of the hospital was suspected 

 of contributing to the great increase of cases of fever in the 2nd, 

 3rd and 4th quarters of the years 1911 and 1912; but as a similar 

 increase took place over the whole district, some general rather 

 than a local cause must have been at work. General draining 

 of all pools in which mosquitos might breed has been suggested, 

 but the expense would be great, and Mr. Strickland appears to 

 think that the drainage of the breeding places of known patho- 

 genic species would probably suffice. The disease being more or 

 Fess endemic, material for fresh infection is always at hand. 



