8 NEW YORK STATE MUSEUM 
dance of the insect with some extension of theinfested 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 different 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 been 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 
