YELLOW FEVER PROPHYLAXIS IN NEW ORLEANS 47 



only one fumigation of the house will be required. It may be necessary to fumigate a 

 house several times, depending upon the amount of infection in the neighbourhood. 



5. If permission to fumigate is not secured, ascertain reason. If because of 

 sickness, endeavor to get permission to fumigate such part or parts of the house as will 

 not disturb the sick. This is difficult, and sometimes impossible in a small cottage, 

 but can be easily done in a large three-story house, for instance. In this case the rear 

 or front of the house can be done, and if the patient is not critically ill, the other floors 

 of the house can be done. Insistence is not urged in any case, if the patient is 

 critically ill or actually moribund. If the patient has died or recovered, no excuse 

 must be taken for not fumigating the whole house at the same time. In case of such 

 refusal, or other refusals where there are no sick at the house, such refusal is to be 

 immediately reported to the Ward Office by telephone or messenger. 



6. Where premises to be fumigated are entered by the foreman and his gang, he is 

 to direct one man to examine all receptacles containing water, and oil them if they 

 contain wrigglers. 



7. The foreman himself will go through the house with the householder, and 

 instruct that individual to remove clocks, sewing machines, freshly gilded picture 

 frames, mirrors, candle sticks and like metallic bric-a-brac. Rooms in which there 

 are pianos must be fumigated with pyrethrum. 



Stores of tobacco, soap, flour, maccaroni, &c., are almost certain to be damaged, 

 and should be removed before fumigation. 



After overseeing the removal of articles likely to be injured, the foreman will direct 

 the actual fumigation. 



Two pounds of sulphur are to be burned to the thousand feet. Thus, a room 

 10 by ID by 10 will require 2 lbs. A room 15 by 20 by 12 contains 3,600 cubic feet, and 

 would require about 7 lbs. of sulphur. The length and breadth are to be obtained by 

 stepping off. A long step of the average man is about three feet, and is near enough 

 for practical purposes. The height of the room must be estimated by the eye. 

 Ceilings range in height from 8 to 20 feet. 



In order to estimate the quantity of sulphur used, the iron pot is to be weighed 

 empty, and when three-fourths full of sulphur, the difference is the amount of sulphur 

 to be used in a pot of that size. 



8. All openings into rooms must be closed. Open flues or those not tightly 

 closed, must be pasted over. Fire places must be filled up with old gunny sacks, and 

 if not tightly closed by these means, must be pasted over. Crevices of doors or 

 windows are to be closed by strips of paper pasted over them, as well as the key hole. 

 This pasting is to be done from the inside of the room, the door for exit and egress to 

 be left for the last, and is to be sealed from the outside. Where several rooms open 

 into each other, it is not necessary to paste up the partition doors, which are to be left 

 open and the rooms fumigated together. 



^^Tiere door and window panels are of fine wood and close tightly, pasting may be 

 omitted. Foreman must supervise the pasting, and see that the paste is not unneces- 

 sarily daubed on, or spilt on the floor. In using the paste, the brush is to be run across 

 the crevices and the roll paper rapidly stuck on, an additional sweep of the brush over 

 the paper is to be made, if the paper shows signs of sagging or falling off. 



9. While pasting up of room is being completed, the sulphur pots are to be filled 

 and set squarely in the centre of pans containing about an inch of water. The pans 

 are to be set in centre of rooms, where there will be no danger of curtains or other 

 drapery falling thereon, and thus starting a fire. The householder is advised to make 

 a last search for family pets, which often display a tendency to slip into the room. 



The wardrobes and clothes closets are then to be opened. This is very important, 

 and must never be neglected, because such receptacles are favourite hiding places for 

 mosquitoes during the day time. 



About one inch of alcohol is then put into the centre of the pot and the match 

 applied, the door of exit to be closed and pasted from the outside. 



