316 



JOURNAL OF ECONOMIC ENTOMOLOGY 



[Vol. 8 



-ameter, breast high, from 12 to 68 inches, with an average of 31 inches. The average 

 cost of felling, barking, and the necessary burning, was S2.57 per tree. In the 

 Toulumne River and Tenaya Creek, drainage of the Yosemite Park, at an elevation 

 of from 8,000 to 9,500 feet, 2,018 infested lodgepole pine trees, ranging in diameter 

 from 14 to 52 inches, averaging 23.7 inches, were treated at an average cost of SI. 13 

 per tree for felling and bm-ning the bark on the trunks sufficiently to kill the insect. 

 Fifteen hundred and eighty-four infested trees were treated in this general area in 



1913. The total number of trees treated in the Valley and Park, during 1913 and 



1914, were 3,904, at a total cost for control work of $4,713.43, or an average of SI. 21 

 per tree. 



On the 17th and 18th of February the New Jersey Mosquito Extermination Associa- 

 tion held its second annual meeting at Atlantic City, N. J. The program was opened 

 by the president's address and a symposium on the special problems which have had 

 to be met in the practical work of mosquito control. Among the points new to mos- 

 quito work it was shown that on shut-in, low-lying, sewage-charged salt marshes, the 

 ordinary trenching was impotent to prevent mosquito breeding mider unusual com- 

 binations of tide, rauifall and cloudy weather. It was brought out that these diffi- 

 cult conditions were to be met by dikes, tide gates and low-head centrifugal pumps. 



During the evening session Dr. L. O. Howard described the work of the Bureau of 

 Entomology on the mosquito problems of the lower INIississippi Valle)^ He gave 

 figures to show the great extent to which malaria reduces the profits of agriculture 

 through affecting the health of the laborers. He described the thorough and interest- 

 ing fashion in which the study of malaria carriers is being pursued in that region. Dr. 

 Jacob G. Lipman, director of the New Jersey Agricultural Experiment Station, 

 discussed the value of mosquito work in relation to the agricultural and urban develop- 

 ment of New Jersey. He showed how successful mosquito extermination could add 

 two hundred million or more to taxable values. 



The morning session was opened by an account of the mosquito work in Connecti- 

 cut, given by Mr. B. H. Waldron. This paper was followed by an account of malaria 

 in New Jersey, in the course of which Dr. A. Clark Hunt showed that the prevalence 

 of malaria is much greater in certain local areas than is usually recognized. Dr. T. J. 

 Headlee showed that, from the beginning of the mosquito extermination work to the 

 year 1912, approximately $200,000 from all sources had been expended, $130,000 

 of which had been contributed b}^ the state and $70,000 by municipalities and private 

 individuals. He showed that property values within the protected zone had increased 

 by more than five and one-haK millions of dollars and that one and one-half milhons 

 of people were reHeved to a very noticeable extent from mosquito troubles. He 

 showed that, beginning in the year 1912, the county as a mosquito fighting unit had 

 developed to such an extent by 1914 that it was expending approximately $130,000 

 a year and affording protection from all species of mosquitoes to one and one-fourth 

 milhons of people. 



Beginning in the evening and extending through the followmg forenoon addresses 

 were presented from the standpoint of the legislator, the freeholder and the tax-payer, 

 in the course of which it was clearly brought out that the people paying the bills were 

 satisfied with the progress of the work. 



The following officers were elected: Dr. Ralph H. Hunt of East Orange, president; 

 Dr. William E. DarnaU of Atlantic City, vice-president; Dr. H. H. Brinkerhoff, 

 of Jersey City, second vice-president, and Dr. Thomas J. Headlee of New Brunswick, 

 secretary-treasurer. 



Mailed April 26, 1915. 



