246 The Control of Mosquitoes 



working hours. Material was kept in such readi- 

 ness that reqtiired quantities could be measured 

 out and issued rapidly, and the brigades relied 

 on for quick service at short notice. Time was 

 also saved by transporting men and supplies in 

 ambulances. 



When a suspected case of yellow fever was 

 reported, the yellow fever commission at once 

 saw the case, and if fumigation was decided upon, 

 the tenants were immediately notified of the 

 proposed fumigation, verbally, and by written 

 notice posted on the house, stating the time work 

 would be started, and the probable time of com- 

 pletion. At the date and time arranged for, the 

 fumigation brigade commenced operations. First, 

 openings such as doors and windows were closed, 

 to retain all mosquitoes within the building. As 

 little disturbance as possible was made, in order 

 that they should remain at rest in the rooms. 



The doorway through which supplies had to 

 pass, was kept closed as much of the time as cir- 

 cumstances would permit. One or two laborers 

 were assigned to each room, to paste with paper 

 strips all cracks, and other communications with 

 the outside air, to make the room air-tight. Large 

 openings were subdivided by wooden strips so 

 arranged that single sheets of manilla paper would 



