JOURNAL 
OF 
ECONOMIC ENTOMOLOGY 
OFFICIAL ORGAN AMERICAN ASSOCIATION OF ECONOMIC ENTOMOLOGIST 
Vol. 16 JUNE, 1923 No. 3 
Proceedings of the Thirty-fifth Annual Meeting of the Amer¬ 
ican Association of Economic Entomologists ( Continued) 
Morning session , Saturday, December jo, 1922 
The session was called to order at 9 o’clock and two papers were 
presented on dusting with an aeroplane. At the conclusion, a joint 
session was held with the American Phytopathologieal Society. 
President J. G. Sanders: The first paper will be given by Mr. 
J. S. Houser. 
DUSTING TALL TREES BY AIRPLANE FOR LEAF 
EATING INSECTS 
By J. S. Houser, Wooster , Ohio 
Abstract 
A thirty acre mixed woodland infested with canker worm, Anisopteryx, and a four 
acre catalpa grove infested with catalpa sphinx, Ceratomia catalpae , were dusted from 
an airplane with undiluted arsenate of lead. A satisfactory kill was obtained in 
both instances and further data as to best ways of manipulating the machine, etc., 
obtained. Trained observers who witnessed the trials were fully convinced the method 
is one of true merit and will prove distinctly useful in the future because of its ex¬ 
treme rapidity and because it may be utilized under conditions which prohibit the 
use of land going machines. 
»f 
At the last annual meeting of the Association of Economic Entomol¬ 
ogists, the writer reported the successful use of the airplane as an in¬ 
strument for distributing poison dust on tall trees. 
The present paper reports two additional tests made during the past 
summer, the first of which involved the treatment of a thirty acre 
mixed woodland at Cleveland, Ohio, for the control of canker worm 
241 
