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ing of the house mosquito throughout the sewage-charged water 

 of this area. 



By the same methods the president and the chief inspector of 

 the Essex Commission demonstrated the existence of a zone of 

 C. pipiens covering northern and northeastern Newark, Harrison 

 and Kearney, with its source in the Frank Creek section of the 

 Kearney marsh. 



These discoveries lead to efforts to eliminate the breeding 

 areas. 



In 1914 the rainfall of the early summer was not only larger 

 but was accompanied by unusually high tides. As a result from 

 the 15th to the 20th of July a brood of A. sollicitans and A. 

 cantator poured off the marshes of Essex, Hudson and Bergen 

 Counties sufficient almost to swamp the mosquito work. At this 

 point Mr. James E. Brooks, of Glen Ridge, wrote an open letter 

 to the writer requesting him to state the cause of this sudden 

 tremendous influx of mosquitoes. The writer could only reply 

 in effect that under the extraordinary combination of rainfall 

 and high tides the drainage system! in the marshes of northern 

 Newark Bay and the Hackensack River had proven inadequate 

 and that dikes, tide-gates and pumps would probably have to be 

 resorted to. At the next meeting of the Essex Commission the 

 question as to what should be done with the Essex marsh arose, 

 and it was decided to look into the dike and tide-gate method. 

 The dike and tide-gates of the Rutherford Gardening Company 

 were examined in the course of the next few days. Mr. Brooks 

 was employed by the Essex Commission as consulting engineer 

 with the result that the Ebling section, the worst breeding part 

 of the Essex marsh, was drained, and 3,000 of the 4,ooo> acres 

 in the Essex meadows have been freed from serious general 

 breeding by use of dike and tide-gates. 



In the spring of 19 15 the Hudson Commission installed a 

 12-inch centrifugal pump in the Frank Creek section of the 

 Kearney marsh, and with the exception of a limited time in 

 August has prevented all serious breeding on that most prolific 

 mosquito section. 



