1 84 JUNGLE ISLAND 



by a mosquito, and that this is the only way 

 that malaria can spread. The malaria mosquito 

 is called Anopheles. I regret to say that neither 

 Aedes nor Anopheles has any short pet name. 



The problem in Panama was just the same that 

 it had been in Havana, and the same man, 

 Colonel Gorgas, was placed in charge of it, as 

 well as of the other medical work there. It was 

 very important that the work be done by some 

 one who had learned the ways of malaria and 

 yellow fever mosquitoes, who lead short but 

 interesting lives. 



Aedes likes clean, quiet water for her eggs. She 

 prefers to lay them in cisterns of rain water or 

 uncovered jars of drinking water, such as people 

 have around their homes. There the eggs hatch 

 into little wrigglers that live in the water but 

 come to the surface for air. In about ten days 

 after the egg is laid the wriggler changes to a full- 

 grown mosquito and flies away. Only the mother 

 mosquito bites. vShe lives about two weeks. 



Anopheles, the malaria mosquito, likes clean, 

 quiet country water for her eggs. She lays them 

 in pools or in the grassy edges of streams where 

 little fishes cannot easily push in to reach the 

 eggs and wrigglers. Like Aedes, she does not 

 usually lay her eggs until she has first bitten 

 some animal and had a drink of blood. 



Both Aedes and Anopheles may lay their eggs 

 in any bit of quiet water. The moist hollow of 



