30 N. H. AGR. EXPERIMENT STATION. [Bulletin 163 



C. H. Hadley, Jr., a graduate of New Hampshire College, of the class of 1912, 

 and a specialist in Economic Entomology. 



The equipment, as regards working collection of injurious insects of New 

 Hampshire, has been increased several fold in the past two years. This col- 

 lection has now been made available for daily work by proper mounting and is 

 one of the most complete and valuable in the country. 



Additions to equipment of spray appliances have been found advisable 

 in order 1o handle the investigations undertaken to determine the arsenic 

 remaining on fruit foliage and grass. 



Special equipment has been devised for use in the projecl concerning the 

 control of root maggots, and further equipment will be necessary along this 

 same line. 



Correspondence. 



All inquiries concerning insects are now carried under the following sepa- 

 rate indices: first, name of the correspondent; second, locality where the 

 insect is found; third, food plant on which the insect was observed at work; 

 and fourth, name of the insect itself. 



In the handling of the large amount of correspondence of this department 

 the series of printed circulars issued the past two years have been of great 

 value. More are needed. 



Publications of the Department. 



The following Stations publications have been issued from this department 

 since the last report: 



Circular No. 14, "The Apple Maggot or Railroad Worm," by W. C. O'Kane, 

 June, 1911. 



Press Bulletin No. 4, "Weevils in Beans," by W. C. OTvane, November 

 1, 1911. 



Press Bulletin No. 13, "Control of San Jose Scale and the Blister Mite," 

 by W. C. O'Kane, February 1, 1912. 



Other publications by the Entomologist are as follows: 



Circular No. 1, of the State Moth Department, "The Gypsy Moth." 



Circular No. 2, of the State Moth Department, "The Browntail Moth." 



Circular No. 3, of the State Moth Department, "Control of the Gypsy 

 Moth in "Woodlands and Orchards." 



Circular No. 4, of the State Moth Department, "Public Measures Against 

 the Gypsy and the Browntail Moths." 



"Methods in Insect Photography," Journal of Economic Entomology, 

 Volume 5, No. 1, February, 1912. 



In addition the Entomologist has contributed articles to agricultural publica- 

 tions. 



INVESTIGATION UNDER ADAMS FUNDS. 



The Apple Maggot. 

 As stated elsewhere, this work is now practically complete. Details in 

 the life history of this insect have been worked out with sufficient data to 

 render the results trustworthy. An effective and economic means of con- 



