272 THE MOSQUITOES OF NEW JERSEY 



increase such as already exist naturally without himself providing ade- 

 quate funds which can be used by the proper public mosquito control 

 agency to eliminate the mosquito-breeding thus created. 



7. Since the work of mosquito control deals with a living organism 

 and must have the support and cooperation of the public, efficient pros- 

 ecution of mosquito work requires a director of operations who is 

 thoroughly grounded in the problem of dealing with living organisms 

 (mosquitoes particularly), understands the principles of dealing with 

 the human kind, and has a practical knowledge of engineering. 



8. Since no two men employ the same methods and since the director 

 of mosquito control operations is held responsible for economy and 

 efficiency in mosquito reduction and elimination, the director should 

 have utmost freedom in methods and in the formation and operation 

 of the organization under him. 



9. Since the responsible organization cannot safely depend solely 

 upon the public reaction as a measure of efficiency of mosquito control 

 going on under its directions, it must provide some reasonably reliable 

 means of determining the efficiency of its work in terms of mosquitoes 

 on the wing. 



Once each month during the warm season, as has been stated, the 

 tides run high. The first brood of mosquitoes usually starts during late 

 March or early April and reaches maturity in the last part of April 

 or early May. Another comes out in June, another in July, another in 

 August, and another in September. In south Jersey there may be an- 

 other brood in October and still another small one in November. 



While this regular succession of broods is the usual thing there are 

 many exceptions. Sometimes, as a result of a long continued favoring 

 wind, the tide will remain so high for ten days or two weeks, that the 

 escape of water from ditched but shut-in marsh is impossible and a 

 brood of mosquitoes will mature and escape. Sometimes the weather will 

 be so rainy and cloudy that the complete removal of the surface water 

 is impossible and a brood may mature and escape. On the other hand, 

 sometimes the tides will pass the full-moon period without rising high 

 enough to cover the marshes and no brood will develop. Sometimes the 

 weather will be so hot and dry that the surface water on the marshes 

 will evaporate before the brood of mosquitoes can mature and none will 

 escape. Sometimes the tides will run so low that areas which are usually 

 swept by high tides with sufficient frequency to prevent breeding may 

 breed heavily. 



Thus it appears that there are conditions during the mosquito season 

 when almost no marsh will breed and still other conditions when almost 



