46 N. J. Agricultural Exi'Lrimlxt Station, Bulletin- 348 



in the metropolitan district. In this area there are 28,000 acres ly- 

 ing in the Hackensack Valle\- and along Newark Bay, bordering 

 Elizabeth, Newark, jersey City and smaller cities and towns. These 

 areas border or are penetrated by excellent waterways which already 



Fig. 16. Sheet water breeding on a solid salt marsh. 



have been or are capable of being deepened for ocean-going ships, 

 and crossed by some of the principal railways of the country. They 

 He next door to the greatest seaport of the United States. 



Before anything was done to prevent salt-marsh mosquito breed- 

 ing, countless millions of these insects were produced during the 

 summer in stagnant pools all over these marshes, and the main- 



