242 The Control of Mosquitoes 



inoculation of yellow fever proved unsatisfactory, 

 but fortunately at that time the destruction of 

 Aedes calopus had progressed far enough to show 

 what could be accomplished in a few months of 

 effort and persistence. 



The discovery that yellow fever propagation 

 could be arrested by destroying, by fumigation, 

 the Aedes calopus in the dwelling where the case 

 occurred, and the houses immediately adjacent, 

 showed that they do not fly long distances. This 

 also indicated that even if these mosquitoes bred 

 in the country, they did not find their way into the 

 city in dangerous numbers. This discovery was 

 very useful, as well as encouraging. 



The scheme of the work being carried out was 

 strongly supported by General Leonard Wood, 

 military governor of Cuba, who had full confidence 

 in the ability of the chief sanitary officer. The 

 people of Havana, being mostly immune, took 

 small interest in yellow fever eradication, but 

 submitted with little objection to the enforcement 

 of the sanitary regulations. They thought that 

 the Americans did not know how to control the 

 situation, and had seized upon something new to 

 occupy their time and make a showing. There 

 was more opposition, in proportion, from foreigners 

 than from natives. It was most fortunate that 



