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Bark Lice, or Scale Bugs on Trees, Shrubs, Plants, etc.
Positive Remedies. —Prof. J. H. Comstock says that in fighting scale insects (scale bugs, bark lice) on trees and shrubs that poisonous fumes nor powdered substances have done any good, and that " they cannot be destroyed otherwise than by actual contact. Lye and solutions of soap have been eminently successful. Common or whale oil soap, 3/4 lb., to water, 1 gal. (dissolve by heat); or lye (concentrated, in lb. cans), 1 lb. to 1 gal. of water, applied when the trees are dormant (not growing—fall or very early spring), has been found to work equally well. Apply with a stiff brush, which reaches the scale under the bark and sweeps off others, but cannot be used on the small branches, and on these Whitman's fountain pump syringe may be employed for spraying. "
Remarks. —Charles Downing, through the Rural -New Yorker, says he uses "1 lb. of the lye to 6 qts. of water, just as the buds begin to swell in. the spring. This is undoubtedly strong enough to kill every one it touches.
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