234 The Control of Mosquitoes 



calopus; A'edes calopus) is a house-haunting mos- 

 quito. Its breeding habits, however, were not known. 



After the conclusions of the Army Medical Board 

 were made known, the next problem of importance 

 was the application of this knowledge to the best 

 advantage. Whether it would be possible to 

 eradicate, or reduce to a non-infective minimum, 

 the Stegomyia calopus was then not known, and 

 did not appear practicable. It was noted that the 

 A'edes calopus entered and left buildings, and that 

 its larvas were mostly found out of doors. It was 

 generally thought that it oviposited in the open, 

 under conditions similar to those suitable for 

 various other species of Culicidce; and that it 

 could fly long distances to reach habitations. 

 The limits of its flight were not known. It had 

 been observed that some Culicidce travel with air 

 currents, and it was supposed by many that the 

 A'edes calopus did likewise ; there being no evidence 

 to the contrary. 



These theories brought into the project of eradi- 

 cating the A'edes calopus the question of drainage 

 or filling of aU the tidal and swampy land near 

 Havana Bay, a very extensive area. 



Further investigation and research was carried 

 on to determine the possibilities of immunizing 

 the non-immune or foreign population, by subject- 



