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once each week. The distance was divided into six sections ; one 

 section was inspected and tested each day. If breeding was 

 found at any point, it was sprayed with oil. This method of 

 control gave good resuUs, but there were times when breeding 

 became so intensive it almost seemed as if it would get away 

 from us. Biut eternal vigilance means a mosquito] ess condition. 



Some few years ago it was the belief of entomologists that 

 mosquitoes would not breed in this part of the Passaic River, on 

 account of its grossly polluted condition, yet in the summer of 

 191 5, enormous broods of C. pipiens were bred along the shores 

 of the river, and infested the east side of the City of Paterson to 

 a great extent. It is interesting to note that during the summer 

 of 1916 a change had taken place in the species breeding in the 

 river. The pipiens had disappeared and A. sylvestris was the pre- 

 dominant species found along the river at all times during the 

 summer of that year. 



In continuing our efforts more power should be given to the 

 County Mosquito Extermination Commissions to compel prop- 

 erty owners, if necessary, to abate mosquito breeding places on 

 their property, instead of having this power vested exclusively in 

 the Board oi Health. Very often the Boards of Health in the 

 smaller communities are unwilling, either through lack of interest 

 or lack oi money, to take any steps, and as a result breeding 

 places continue unchecked. 



Efficiency in the enforcement of ordinances and laws is of 

 more importance than their enactment. 



In trying to demonstrate the practicability of local mosquito 

 control we meet with a great amount of ignorance on the subject 

 of mosquito extermination. One of the worst features in 

 mosquito work is the ridicule heaped upon us, particularly by 

 a class of citizens who are supposed to be intelligent members 

 of the community. They condemn mosquitO' extermination work 

 without making the slightest investigation of the problem, and 

 without a knowledge of any phase of the work whatever, they 

 damn it and condemn it as a crude method of robbing the tax- 

 payer. 



