so N. J. Mosquito Extermination Association 



D50N 



NEW JERSEY 



SALT MAPSM 



M05QUIT0 

 INFESTATION 



SCALE - 5 MILES 



CAPE m 



CONDITION IN 1917 



Nlii riTV 



AREA OF ORIGINAL 

 SALT MARSH MOSQUITO 

 INFESTATIO^S ENCLOSED BV 



BROKEN LINE • 



TIDAL MARSH UNDRAINEO B 

 TIDAL MARSH PARTLY OR 

 COMPLETELY DRAINED H 

 AREA PRACTICALLY FREED OF 

 SALT MARSH MOSQUITOES 11! 

 AREA ST3LL INFESTED BY 

 SALT MARSH MOSQUITOES 



Fig. I. Map of New Jersey showing Drainage and Mosquito Conditions 

 in 1917. 



