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\ ‘ ge Sane y 
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24 ANNUAL REPORT. : 
Mr. Stevens had had strong soap suds recommended for the 
louse, to be applied to the leaves; had tried it and found two — 
applications to work an effectual cure. eae 
Mr. Jewell had tried solution of ammonia and decoction of 
tobacco, the latter of which he found the best, and would fur- 
ther say that it was the only use for which it was fit. 
Mr. Cannon said tobacco water (the leaves to be immersed 
in it or apply with syringe) is the best remedy I know of. _ 
Mr. Howe suggested evening bonfires, or that a pan of burn- 
ing tar be placed among the trees as an economical way of 
catching and destroying insects. % 
Mr. Dartt regarded the apple worm as the most destructive 
to the apple in Minnesota and throughout the north-west. 
Thinks this worm’ was brought here in barrels of apples 
mee from below. Described Weir’s trap for catching 
them. 
Dr. Humphreys inquired if the fact of a leaf-louse depositing 
its eggs on a tree one season would render it more liable to its 
ravages another year. 
~ Mr. Gould thought it would, from his own observation. 
Mr. Stewart said that a tree that was once attacked by leaf- 
louse is more liable to be attacked by them the next year, as 
their eggs are left on the branches and are not injured in the 
winter. 
Mr. Dartt inquired if the aphis or louse did not become a fly. 
Mr. Gould said they were green when young, but when fully 
developed they became a black fly not much larger than a 
louse. 
Mr. Stewart had discovered a white grub among his straw- 
berry vines that destroyed them by eating off the roots, and 
was unable to account for it. ts 
The President thought it was the larve (Lachnosterna) of 
the May beetle, and that soap-suds was the best remedy. 
Mr. Jewell said his nursery had suffered considerable from 
the beetle. The ground that was formerly covered with poplar 
trees was infested the least. He thought the best remedy was 
to go through the orchard every day, and catch and destroy 
them. 
At this stage of the discussion Col. Stevens offered the fol- 
lowing resolution, which was adopted without-discussion : 
Resolved, That a committee be appointed by the President to prepare @ 
memorial to the Legislature, requesting provisions to be made for the 
appointment of a State Entomologist. 
Col. Stevens, and Messrs. Dartt and Jewell were appointed 
such committee. 
Discussions resumed. 
