42 N. J. MosQuiTO' Extermination Association 



pollution of rivers and streams, yet with all this force of laws and 

 regulations behind them, their activities in enforcing their own 

 ordinances, or the State Sanitary Code, have not been very 

 conspicuous to the public, who have had to bear the consequence 

 of mo'squito annoyance, caused in many cases by the negligence 

 of local boards of health tO' perform the duties imposed upon them 

 by the health laws of the state. Board of health ordinances and 

 the State Sanitary Code are efficient in enactment to prevent un- 

 sanitary pollution of rivers and streams, but unfoirtunately are 

 inefficient in enforcement. 



Of the many im.portant problems arising from pollution, one 

 of the most important would be the discovery O'f a, larvicide of 

 such a chemical character that it would not be injurious tO' plant 

 life, would be harmless to domestic animals, and would remain 

 effective during the season. A larvicide having this amount of 

 efficiency would give us a tremendous advantage in mosquito con- 

 trol work and undoubtedly would reduce the cost greatly. 



Many of the notes contained in this paper were taken from a 

 report prepared as the result of an investigation of the pollution 

 of the Pbtomac River and its tributaries by the Public Health 

 Service, also from the report of Mr. Allen Hazen, C. E., on sew- 

 age disposal for the City of Paterson. 



If these rambling notes will contribute in any measure tO' the 

 success of mosquito control, I will feel amply repaid. 



P'rESidi:nT BrinkKritoee — The next paper is ''Applications of 

 Mechanics to Mosquito Control," by Mr. Harold I. Eaton, form- 

 erly chief inspector of the Atlantic County Commission, Atlantic 

 City. 



