REPORT OF THE MOSQUITO INVESTIGATIONS 



IN 1906. 



BY JOII]N" B. SMITTl. 



During the fiscal year, xvovember 1st, 1905, to October 31st, 

 1906, the sum of $o,500 was avaihible for the purpose of continu- 

 ing Avork under chapter 80 of the laws of 1905, and the sum of 

 $0,000 was available for the jnirpose of aiding communities that 

 might wish to take advantage of the provisions of the law. Of the 

 latter sum, $500 were assigned to the city of Elizabeth and $375 

 to the borough of Atlantic Highlands ; the balance was turned 

 back into the treasury. 



The writer has been continued as executive officer under the law, 

 and all investigations have been made under his direction. As 

 field assistant especially for marsh Avork, Mr, H. II. Brehme has 

 l)oen continued, and as field assistant for inland Avork and to take 

 charge of the laboratory experiments, Mr. John A. Grossbeck has 

 also been retained. 



The fish inA^estigations and experiments referred to in the previ- 

 ous report have been concluded by Mr. W. P. Seal, and his record 

 and conclusions form ]>art of this report. Briefly stated, the ex- 

 ]icriments have not been as successful as Avas hoped and expected, 

 and it is decidedly questional)le Avhether the top minnow, Gam- 

 hiisia affinis, can be made a permanent inhabitant of any of the 

 natural Avaters of the State, although this does not mean that it 

 may not have a field in artificial Avaters not stocked Avith preda- 

 iovY fish. 



Each summer offers climatic peculiarities of its oavu, and that of 

 1900 Avas no exception to the rule. After a normal spring and 

 earlv summer, during Avhich Xe^^•ark and Elizabeth secured the 

 full benefit of the marsh Avork by the absence of the flights that in 



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