46 YELLOW FEVER PROPHYLAXIS IN NEW ORLEANS 



8. Salting of Stagnant Gutters and Pools ordered. 



This order was issued on August 23rd, for the purpose of killing 



any Stegomyia which might possibly be breeding in the gutters. 



Subsequent experience, however, I think demonstrated that this 



material although efficacious against the Stegomyia was not strong 



enough to prevent the breeding of the Salt Marsh mosquitoes which 



became troublesome. Crude oils were more efficacious if used in 



sufficient quantity. 



U.S. Public Health and M.H.S. 



New Orleans, Aug. 23, 1905. 

 Sir, 



A car of rock salt will be placed at , for distribution in the 



stagnant gutters and pools in your Ward. The wagons and labourers necessary for 

 distribution of this salt are employed by contract from the Central Office. As soon as 

 possible the distributing forces will report to you for directions as to the manner and 

 place of distributing the salt, this being under your direction. 



You will please institute at once a rapid survey of the streets of your Ward, so that 

 you may have a definite idea where to place the salt, and will detail one of your 

 foremen to supervise the distribution. 



It is calculated that the average gutter i foot wide and containing approximately 

 4 to 6 inches of water will require 500 lbs. of salt. To the front of a Block, the salt 

 should be placed only in those gutters and pools that are stagnant, and which cannot 

 be flushed out. J. H. White. 



9. Instructions for Fumigation for Foremen of Gangs. 



(fig^- 7-9)- 



These most practical and eminently characteristic directions were 



issued by Dr. White on August 29th, that is after gaining considerable 



experience in this most difficult of all the Anti- Yellow Fever measures 



to carry out efficiently. 



1. Assemble gangs in morning, note vacancies, if any, and ask for necessary men 

 to keep gangs up to full strength. 



One man in each gang must be able to speak Italian. 



2. Foremen must supervise the collection of supplies before starting out in the 

 morning. Supplies taken out must be counted, and will be checked up against them. 



The following supplies are necessary : — Sulphur, alcohol, pyrethrum, flour or 

 paste, paste brushes, tacks and hammers, scissors, oil can, roll paper, large and small 

 sizes, cotton batting, and pots and pans. 



Especial care must be used in selecting pans ; a leaky pan may cause much damage 

 to carpets, matting or floor. 



3. Assignment of houses for fumigation must be carried out in the sequence in 

 which they are given to the foremen, unless for good reason. 



The foremen are responsible for discipline in. their gangs. Drinking during 

 working hours, idling and loafing are sufficient causes for instant dismissal. 



4. On arriving at a house for fumigation, the foreman is to act as spokesman, and 

 must not allow members of his gang to " butt " in. The interpreter to be used freely 

 in order that there may be no misunderstanding. No promises must be given that 



