176 Timehri. 
1 foot above the level of the bed to obviate being bitten shrough the net _ 7 
if limbs rest against it. 
Systematic killing of adults cannot be tvo highly commended, the easiest 
way of doing this is to use a wineglass smeared with oil inside, placing it over 
the mosquito, which when disturbed immediately flies away from its resting- 
place at right angles, hits the bottom of the glass, and is quickly entangled in 
the oil. 
A black coat or cloth hung up in a room will attract most of the mosquitoes 
to it, when they can be easily captured. 
Yards and houses can be kept free from breeding-places by an expenditure 
of a few minutes daily, this is the surest way of keeping down the mosquito 
pest. Any receptacles of stagnant water should be searched barrels, tubs, tins, pud- 
dles, water in tree holes and stumps, and gutter spouts. Do not forget 
to search inside your houses also, look well and carefully in cisterns for 
bath water, and get them screened, water standing in wash jugs and 
basins will quickly become a breeding-place if not changed frequently. It isa good 
tule to insist on all standing water being changed at least twice a week, but the 
water must be completely emptied away, to leave some in the bottom and then 
refill is useless. 
With regard to clothes I will not tire you, but would commend to you the 
old old saying of Sir Patrick Manson : “‘ In the tropics wear white, insects don’t 
like it.” A piece of paper inside the socks or stockings will prevent bites on 
the ankles, a favourite spot for mosquitoes, it costs nothing. and is well worth 
the trouble. 
STAGNANT-W ATER. 
In very exceptional cases where stagnant water must stand and cannot be 
covered up for some reason or other, you can prevent it becoming a breeding- 
place by one of the following methods :— 
(a) Empty out the water twice weekly at least, oftener if possible. 
(b) Add a small quantity of crude carbolic acid to the water, possible 1 
in 20,000 is fatal to larvee. 
(c) Pour paraffin on the surface, but the surface must be quite covered, 
as this is not a poison like carbolic acid. 
(d) Place a few fish in the water. 
The choice of method, of course, depends on the purpose for which the water 
is to be used. 
With regard to quinine prophylaxis, it is now universally admitted amongst 
the profession that a small dose of quinine, say 5 to 10 grains at intervals of 
afew days is extremely valuable. If not a preventative it, atany rate, renders 
people much less susceptible to malaria. This has heen amply proved by the 
good results obtained by our own Surgeon General insisting on prophylactic 
doses of quinine being given to the coolies on estates, and the sale at cost price 
of quinine tabloids to all who wish to avail themselves of its benefits. 
