Appendix A. 75 



(Reduced from original) 



Fourth: — The destruction of mosquitoes by one or more of the methods 



clrcddy described. 



These measures if properly-carried out will greatly restrict the prevalence 

 of the disease, and will prevent the occurrence of new malarial infections. 



It must be remembered that when a person is once infected, the organ- 

 isms, may remain in the body for many years, producing from time to time 

 relapses of the fever. 



A case of malarial infection in a house (whether the person is actively ill 

 or the infection is latent) in a locality where Anopheles mosquitoes are 

 present, is a constant source of danger, not only to the inmates of the house, 

 but to the immediate neighborhood, if proper precautions are not taken. 

 It should be noted in this connection that the mosquitoes may remain in a 

 house through an entire winter and probably infect the inmates in the spring 

 upon the return of the warm weather. 



Malarial fever is prevalent in certain boroughs of New York City, and in 

 vieu' of the presence of standing water resulting from the e.xtensive c.iccava- 

 tions taking place in various parts of these boroughs, is likely to extend, 

 if means are not taken for its prevention. 



Regulations of the Board of Health, New York City, in Aid of Mosquito 

 Externyinatvyn and the Prevention of Malarial Fever. 



(In Force- from Maech 15 to October 15.) 



1. No rain-water barrel, cistern, or other receptacle for rain-water, 

 shall be maintained without being tightly screened by netting, or 

 so absolutely covered that no mosquito can enter. 



2. No cans, pails, or anything capable of holding water, shall be- 

 thrown out or allowed to remain unburied on or about any premises. 



3. Every uncovered cess-pool or tank shall be kept in such condition 

 that oil may be freely distributed so as to flow over the surface of 



the water. Covered cess-pools must have perfectly tight covers, and all 

 opejiings must be screened. 



4. No waste or other water shall be thrown out or allowed to stand on 

 or near premises, 



Information is requested as to the presence of standing water anywhere, 

 so that the premises may be inspected and the legal remedies against the 

 same be applied. 



The prompt cooperation of all persons in the enforcement of the above 

 regulations is earnestly desired, and they arc assured that in this way the 

 breeding of mosquitoes on their premises may be prevented. 



Mosquitoes are, so far as known, the only means of conveying malaria. 



Any inquiries or com{)laints in relation to the above matter should be for- 

 warded to 



The Assistant Sanitary Superintendent. 



Department of Health, 



fof the Borough where complaint originates). 



ERNST J. LEDERLE. Ph.D., President. 



HERMANN M. BIGGS, M.D.. Medical Ofjlcer. 



