JOURNAL OF ECONOMIC ENTOMOLOGY 
OFFICIAL ORGAN AMERICAN ASSOCIATION OF ECONOMIC ENTOMOLOGISTS 
AUGUST, 1923 
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Ventures into the unknown are by no means always happy. Such 
was the case in the recent attempted test in New Hampshire of the 
possibility of utilizing a dirigible for the application of a poisonous 
dust to forest trees. It was especially vexatious that a thorough test 
was so nearly accomplished. The incident simply emphasized the 
uncertainty of investigational work and by no means suggests that 
further efforts along this line are inadvisable, in spite of the months 
of work and planning rendered fruitless by untoward developments. 
It appears practicable to utilize some device for dusting forest trees 
from above. It is possible that the type of dirigible selected was not 
the best for the purpose in view. Some modification may bring about 
the desired result. There is no question as to the desirability of 
developing equipment which can be used, possibly in special cases 
only, for dusting forest trees from above. If there are no planes or 
balloons moderately well adapted to the purpose, modifications might 
be developed. It may be necessary to abandon both planes and 
balloons and solve the problem in an entirely different manner. 
It is evident that there is an increasing need for a relatively in¬ 
expensive method of destroying leaf feeding caterpillars in densely 
forested areas. The high powered spraying equipment of the present day 
represents a long step in advance of the methods of some years ago. 
Is it not reasonable to look for another step in the near future? We 
use water as a carrier. We are employing air as a distributor of poison. 
Is it not reasonably safe to ride on the “wings of the wind” and at 
the same time scatter an insecticide effectively? Possibly not with 
the present equipment. Is it too much to look for the development 
of such a method within five years ? 
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