250 The Control of Mosquitoes 



the house, and attend to any additional pasting 

 that became necessary. When the fumigation 

 period had elapsed (or after three hours), as many 

 doors and windows as possible on the lower floor 

 of the leeward side were first opened to let out the 

 fumes. Those on the windward side were opened 

 next. The inspector entered the building as soon 

 as the fumes would permit, and inspected the 

 pans, to see that none had been prematurely 

 extinguished, and ascertain that the fumigation 

 was entirely satisfactory. A repetition of fumi- 

 gation was seldom necessary. Floors were then 

 swept and mosquitoes carefully collected. These, 

 although nearly always dead, were at once burned, 

 to obviate danger from their revival. 



We had established by experimental fumigation 

 that apparently dead mosquitoes revived after 

 several hours' exposure to the air. 



Immediately on the rettirn of tenants to their 

 rooms, they were requested to examine their 

 effects, and verify their good condition. 



All traces of paper and paste were removed after 

 each fumigation, by hot water and scrubbing 

 brushes where necessary. Before the fumigators 

 left a house, the inspector obtained a signed state- 

 ment to the effect that no articles belonging to the 

 tenants were missing. Great care was taken to 



