92 N. J. Mosquito Extermination Association 



Co. Upon approaching the sanitary engineer at Mays Landing, 

 however, on the subject of control of mosquitoes he signified 

 his desire to do everything in his power toward cooperation with 

 the Atlantic Loading Co. and the Mosquito Commission. 



A meeting was called at the office of the Mosquito Commission 

 for April 2, and representatives of both Loading Companies were 

 present, also a representative from the State Agricultural Exper- 

 iment Station. The matter of protection for these two plants was 

 taken up and the habits of the species of mosquitoes with which 

 we had to deal explained. The members from the loading com- 

 panies wanted more definite figures than could be given off hand, 

 and the meeting adjourned for one week to allow the combined 

 offices of the State Experiment Station and the Atlantic County 

 Mosquito Commission to prepare detailed plans and costs for the 

 elimination of mosquitoes directly affecting these plants. 



To prepare these plans we had to bear in mind that the interested 

 parties knew nothing of mosquitoes and their habits, and unless 

 fully and clearly explained, would not understand the need for 

 the plans as prepared. 



Careful study of the problem has shown the species of salt 

 marsh mosquito concerned travel on winds of low velocity (10 

 miles per hour or less), of high humidity (70 per cent or more), 

 and of high temperature (about 80 degrees.) Also, experience has 

 taught us to expect flights of 30 miles. With these facts in mind, 

 charts were prepared showing the wind directions and wind velocities 

 for the months of May, June, July, August and September of the 

 years 1914, 15, 16 and 17. Maps were also prepared showing the 

 known breeding grounds of the salt marsh mosquitoes and their 

 relation to the munition plants concerned. 



The charts served to show that the prevailing winds for the 

 months mentioned came from the south and southwest and also, 

 that the winds from the east and northeast were comparatively 

 rare, with the exception of during the year 1916, when all but one 

 emergence of salt marsh mosquitoes were followed by easterly 

 winds. These flights covered Egg Harbor, Elwood, and Ham- 

 monton. A very few reached Mays Landing. They further served 

 to show that favorable wind velocities occur during the latter 

 part of June, July, August and the forepart of September. It may 

 be assumed that winds from any of these directions blowing as 



