6 REMEDIES AND PREVENTIVES AGAINST MOSQUITOES. 
it be applied shortly before dawn, would be as effective as under other 
circumstances. 
A mixture recommended by Mr. E. H. Gane, of New York, is as 
follows: 
Castor oiet a. se ee pe ee Se PAE Wee he ee Ree eee ee 1 ounce 
Alcohol 22422253255 = Je Figo je 8 BBS eS Se eee a ee 1 ounce 
OTOL Laver Cl ae ee 1 ounce 
This mixture was prepared for fhe purpose of avoiding the odor 
of the oil of citronella. 
Oscar Samostz, of Austin, Tex., recommends the following formula: 
Onkof Citronella = ea ee pemet Sule 1 ounce 
Liquid vaseline__-——----—-- metas Piel 2 ere ene eee ees 4 ounces 
This mixture greatly retards the evaporation of the oil of citron- 
ella. Mr. B. A. Reynolds has used successfully in New Orleans 
20 minims of oil of citronella to the ounce of vaseline or lanolin. 
A 5 per cent solution of sulphate of potash has been recommended, 
as also the oil of cassia. Pure kerosene has also been used extensively 
in the Philippines. 
SCREENS AND CANOPIES. 
Such obvious measures as the screening of houses, the use of 
netting for beds, and the wearing of veils and gloves after nightfall 
in badly infested regions need no detailed consideration. Screening 
of houses can not be too carefully done, and adjustable, folding, or 
sliding window and door screens seem never to be tight; even with 
well-fitted screens there are often opportunities for mosquitoes to 
enter; constant care and vigilance alone will prevent this. In cer- 
tain seasons in mosquito regions mosquitoes will attempt to make 
their way through screens and are often able to do so. When they 
are very numerous wire screens should be painted lightly with 
kerosene or oil of citronella. 
With bed canopies there should be ample material to admit of a 
perfect folding of the canopy under the mattress, and the greatest 
care should be taken to keep the fabric well mended. It often hap- 
pens in mosquito regions that little care is taken of the bed nettings 
in the poorer hotels, and it is necessary for perfect protection that 
a traveler in the Southern States should carry with him a pocket 
“ housewife” and should carefully examine his bed netting every 
night, prepared to mend all tears and expanded meshes. Veils and 
nettings for camping in the Tropics or other regions where mos- 
quitoes abound are absolutely necessary. Light frames are made 
to fit helmetlike over the head and are covered with mosquito 
netting. Similar frames, readily folded into a compact form, are 
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