WINTER NUMBER 45 
heard to observe that some of the ‘“‘imagoes” seemed to be badly 
rubbed. 
As retiring president of the A. A. A. S. Dr. Howard on 
Tuesday evening gave a stimulating address on the ‘War 
Against Insects.” His theme was that insects were struggling 
with man for the mastery of the earth and that it behooved man 
to be on the alert lest the issue of the war be against him. His 
address has been printed in Science. Prof. Wm. Bateson of 
England lectured to the Association on Wednesday evening. He 
took the position that while the principle of evolution was thoroly 
established there was still much doubt as to the factors respon- 
sible for the origin of species and that Darwin’s theory of the 
origin of species thru natural selection of small fluctuating vari- 
ations had not been proven. Along this same line the zoologists 
had much to say about orthogenesis. 
The address of the retiring president of the Economic ento- 
mologist, Prof. Geo. A. Dean, was on the subject of cooperation. 
Prof. Sanders of Pa. was elected president for the Boston meet- 
ing next year. It was voted to hold the 1923 meeting in Cincin- 
nati and the 1924 meeting in Washington. For the 1925 meeting 
a western city, “perhaps Kansas City,’ was suggested. Space 
forbids our noting the many interesting and valuable papers pre- 
sented. One was a highly amusing moving picture of the life 
history of the ox warbles. This film is owned by the U.S. D. A. 
and perhaps could be secured by our county agents. 
DUSTING GROVES AT THE RATE OF SIX ACRES PER 
MINUTE 
Houser Outflies County Agent Briggs 
A very interesting and suggestive illustrated paper was given 
at the Toronto meeting by Prof. Houser of the Ohio station on 
the successful dusting with lead arsenate from an aeroplane of 
a grove of catalpa trees infested with the catalpa sphynx. It 
was Prof. Houser’s contention that, considering the rapidity of 
the work, dusting tall trees from an aeroplane might under some 
circumstances prove to be the cheapest method in spite of the 
high cost of aeroplanes. 
How about dusting groves of seedling orange trees for rust 
mites? One plane might take care of most of the groves of the 
Citrus Exchange for instance. One member remarked that ento- 
mologists must now substitute for their time-honored slogan 
adopted from the ministry ‘‘Let us spray,” one adopted from the 
housewife, “Get up and dust.” 
