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PLEA FOR INVESTIGATION OF INDIAN CULICIDIZ. 597 
hundreds of Europeans whose bungalows are so far from neighbonrs, 
that they might secure a practical immunity from mosquitoes of. all 
sorts, by the expenditure of a very little troubleand attention. In this 
part of the world at any rate the great source of mosquitoes of all sorts, 
Anopheles included, are the small pukha tanks which are to be found in 
nearly every compound for storing water for the garden. In most gar- 
dens there will be half a dozen of these connected with each other and 
the well-head by means of cemented channels. All that is required is 
to insist that these and all naunds and other small storages of water 
shall be emptied to dryness, and left so for a few hours, once every 
week or ten days. 
If every one in an Kuropean cantonment would do this they would 
be but little troubled with mosquitoes even in the rains and might 
almost banish them in the hot weather. Secondly in the rains search 
the compound and its environs for pools. Fill up the small ones 
with a few shevels of earth and kerosine the large ones. The exca- 
vation made at the end of the run for the bullocks from the well- 
head is an almost certain find for Anopheles in the rains. It should 
be kerosined weekly. Such measures, however, cannot deal with adult 
mosquitoes that are already harboured in the house, and they are long- 
lived insects. It is usual to lime-wash houses in the cold weather. 
This should he preceded by a thorough fumigation with sulphur; 
pastiles for which purpose, each sufficient for 1,000 cubic feet of 
room-space, have been made for me by Messrs. Waldie of Cawnpore. 
Favourite lurking places, such as bath-rooms, should be periodically 
fumigated by burning one of these pastiles. It is almost needless 
to say that all doors and other openings should be closed before 
lighting the pastile and that it should be left closed for a few hours, 
Again a good deal can be done by keeping “ 
and dawn; just the times they are usually freely opened. It seems 
well nigh impossible to induce people to adopt these simple and not very 
onerous precautions, but will some of the members give the matter 
a systematic trial and report on the result thereof ? 
With the view of assisting members who are unaccustomed to the 
entomological Branch of Natural History studies, your Secretary has 
kindly consented to reproduce the following notes. on methods of 
collecting which I have drawn up for private circulation among friends 
chicks”? down at dusk 
