The Mosquito Must Go 7 



Essex, Berg-en, Hudson, Passaic, Camden and Gloucester coun- 

 ties, are indicated by what has actually taken place, and by the 

 very evident and almost unequalled opportunities for develop- 

 ment which exist in the industrial centers of these counties. 



In the Metropolitan District in Northern New Jersey, which is one of the 



Richest and Most Densely Populated Sections of the Entire 



United States, lies an Area of More Than 28,000 Acres on 



Which Great Industrial Development Has Just Made . 



A Beginning 



This metropolitan district may be defined as that section of 

 New Jersey bordering on the lower Hackensack Valley and 

 Newark Bay and immediately adjacent thereto. It includes the 

 cities of Paterson, Passaic, Hackensack, Elizabeth, Newark, Ho- 

 boken, Union, Jersey City and Bayonne, as well as a host of 

 smaller cities and towns, and has an aggregate population of 

 nearly two millions of people. In this area there are more than 

 28,000 acres of salt-marsh land, not more than 5 per cent of which 

 has been developed for industrial purposes. This is true in spite 

 of the fact that it is crossed by the principal railways of the 

 United States and penetrated by large waterways, and stands at 

 the threshold of the greatest seaport which the country possesses. 



Without doubt, the fact that this land lies not more than 

 12 inches above mean high tide and is from time to time covered 

 by the sea, has interfered with its development. But such land 

 can be reclaimed by hydraulic fills, or the tide can be fenced 

 out. Some other agency than the sea floods must be playing a 

 large part in preventing the proper development of these lands 

 which their location would seem to warrant. The salt-marsh 

 mosquito pest seems the most likely factor. 



Before anything was done to prevent breeding, countless 

 millions of these insects were produced during the summer sea- 

 son in the stagnant pools found all over these marshes, and the 

 maintenance of large forces of industrial workers on this area 

 was greatly interfered with by the presence of these pests, which 

 during large flights gave them no peace day or night. 



Control of This Salt-Marsh Mosquito Pest Has Already Proved Prac- 

 ticable on Considerable Areas of the Metropolitan Meadows 



In 1905 the New Jersey State Agricultural Experiment Sta- 

 tion, with local agencies, began the task of suppressing the 

 salt-marsh mosquito within the metropolitan area. This work 



