Lary» er 
and to the present time 3-1/2 miles have been covered. Mr. Burgess's large 
power sprayer is used. With high pressure, it can throw the spray 200 feet. 
The edge of the timber is being followed, rather than the road, and the timber 
is being sprayed in a strip 100 to 150 feet wide. An examination of the trees 
sprayed.the first day showed no insects at all, whereas the unsprayed trees 
contained many insects. Apparently all the sawfly larvae will be killed, 
though the spraying does not seem effective against the needle miner, or tyer. 
This is the first extensive spraying of forest trees, and of course is possibly 
practicable only under park conditions. 
William Middleton recently visited an estate at "Westend," near Gordons- 
ville, Va., where some old Dutch elms have been repeatedly infested by the elm 
leat-beetle. The infested trees are in very poor condition, owing to the rav- 
ages of the beetle, but the location seems ideal in its isolation and climate 
for an attempt to introduce some of the elm leaf-beetle parasites from Europe 
and establish them in this country. Dr. W. R. Thompson, of the Division of 
Cereal and Forage Insect Investigations, expects to send some elm leaf-beetle 
parasites to this country for such colonization in the near future if condi- 
tions in France enable him to secure them in quantity. After the visit to 
"Westend," Mr. Middleton went to ‘Castle Hill," near Cobham, Va., to examine 
for insects a tremendous box hedge on the estate, and to advise on the treat- 
ment of the tulip trees infested by the borer. 
On August 4 Leslie W. Orr was appointed Temporary Field Assistant under 
the direction of Dr. S. A. Graham, of the University of Minnesota. He will 
assist in investigations of defoliation of forest trees by the jack pine sawfly 
and spruce budworm. 
CEREAL AND FORAGE INSECT INVESTIGATIONS 
G. A. Dean, Senior Entomologist, in Charge 
W. R. Walton, Acting in Charge of this Division, attended the meeting 
of the Northeast Section of the American Association of Economic Entomologists, 
beginning July 30 at Riverton, N. J. Mr. Walton reports a large and enthusi- 
astic attendance and that an excellent opportunity was afforded for a general 
view of the Japanese beetle work and other important projects under way in that 
general region. 
C. N. Ainslie visited Beach, N. Dak,, during early August in order to in- 
vestigate a severe infestation of the Hessian fly in western North Dakota. He 
found the insect more numerous and injurious than has been the case for many 
years, and was able to accumlate a valuable series of notes relating to the 
insect and its parasites in an unusual environment. 
D. J. Caffrey, in charge of the corn borer investigational work, made a 
tour of inspection throughout the infested area during the latter part of 
August, spending several weeks Visiting and inspecting the various laboratories 
and the more recently infested sections of the Lake district. 
