8 NEW YORK STATE MUSEUM 



dance of the insect with some extension of the infested territory. It 

 is now known to occur from Yonkers north to Yorktown Heights and 

 it appears to be somewhat generally distributed in Nyack. 



Codling moth. Field studies of the codling moth were continued 

 in cooperation with the bureau of horticulture of the State Depart- 

 ment of Farms and Markets. Evening temperature records were 

 kept by George W. Mead, living 3 miles west of Barker and about 

 2 miles from Lake Ontario, and E. E. Crosby, residing 4 miles south- 

 east of Lockport and located on the Erie plain about 14 miles from 

 the lake. Interesting variations between these two localities were 

 found to exist and as evening temperatures greatly influence the 

 deposition of codling moth eggs, these data have a practical bearing 

 and serve to explain some apparent inconsistencies in the abundance 

 of the pest in various orchards. The observations on deposition of 

 eggs in diflierent parts of Erie county by L. F. Strickland, inspector 

 of the Department of Farms and Markets, show an interesting cor- 

 relation between high evening temperatures and oviposition by this 

 very injurious insect. 



Field tests were also conducted to determine the possibility of 

 destroying the moths before they laid their eggs by spraying the 

 trees thoroughly with a nicotine preparation, other insecticides being 

 simply incidental to the main purpose. Work of this kind was con- 

 ducted on the farm of L. L. Morrell, Kinderhook, and that of R. E. 

 Heard, Lockport. The spraying on the latter farm was under the 

 supervision of Mr Strickland and a canvass of the results shows a 

 decided improvement following the application. The data amply 

 warrant the continuation of work along this line. 



The series of experiments to determine the relative efficiency of 

 the several sprays for control of codling moth have iDeen continued in 

 the western part of the State and the data in relation thereto are 

 given in a general discussion of the codling moth work. 



Apple maggot. It was not possible to continue the field work with 

 this insect, though it happens that the orchard sprayed with poison 

 late last year was gratifyingly free from injury last summer. There 

 was no spraying the past season and the fruit was very severely 

 damaged. This alone suggests that a late application of poison 

 at the time the flies are issuing is the most promising method of 

 controlling the pest, particularly since similar results have been 

 obtained by other workers. 



White-marked tussock moth. The past season has been note- 

 worthy because of the unusual abundance of the caterpillars in 

 orchards and the consequent general and rather serious damage to 



