274 The Control of Mosquitoes 



estimated cost was not large, the amount allowed 

 him was below the sum asked for. 



The first house to house inspection of the city of 

 Panama showed that Aedes calopus larvae existed 

 at practically every house in town. Adults of the 

 species were plentiful everywhere, and everyone 

 who could afford it used mosquito bars. Foreign- 

 ers found it impossible to sleep comfortably 

 without a mosquito bar, and one could not sit 

 down even in the daytime without being annoyed. 



The ice supply was limited and ice was expensive, 

 five dollars per hundred pounds, when obtainable. 

 The natives cooled water by keeping a supply 

 indoors in semi-porous earthenware vessels, called 

 tinajas. In these larvae thrived in great numbers 

 inside the houses, as well as in the barrels, etc., in 

 the patios. 



After the first inspection of the town was com- 

 pleted, and proper notices published in the press 

 concerning the proposed campaign against mos- 

 quitoes, a second inspection was made, and at 

 all places where mosquito larvae were found, the 

 owners of the water containers were requested to 

 assist the sanitary officers by complying with 

 Ordinance Number 6. The number of containers 

 with mosquito larvae was reduced. A written notice 

 was next sent out, inviting the attention of those 



