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Fig. 8 The malaria mosquito (She stands on her head) |
Fig. 9 Culex the mosquito (She is humpbacked) |
[1469]. How to avoid malaria, yellow and dengue fevers. To avoid these diseases, which are carried by mosquitoes, we screen all houses with fine wire screens and use mosquito nets on the beds. Also, under certain conditions we take daily doses of quinine in malarious regions.
We kill the mosquitoes.
To do this we must know their habits.
Mosquitoes all lay eggs in water. These hatch out as wigglers or larvae, which have to come to the top frequently to breathe. In about twelve days or longer they turn into tumblers or pupas, which in a few days longer come to the top when their backs split open and the mosquito comes out and flies away.
Fig. 10
The malaria mosquito is domestic like the chicken and lives around in houses hiding in the grass, bushes or dark corners and comes out to bite at night. When a settlement is abandoned the malaria mosquito moves away also. She rarely flies far from home and is not found much beyond 500 yards from a house. She lays her eggs in running clear water preferably, but she will accept water in hollow trees, between the leaves of lilies or air plants or in vases of flowers, or in cisterns and water butts.
Fig. 11
Catching malaria