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a peck to 32 gallon, and stir it well two or three 
times a day for three or four days. With this liquid, 
after the lime is subsided, give the trees a good 
watering, observing to throw a considerable part 
of it under the leaves by an engine. This should 
be repeated once a day for six days, which will 
destroy all the Aphis.” 
Weighton, in his communications to the 
Caledonian Horticultural Society, after stating his 
opinion of the Honey Dew, and making some 
effort to prove that it is the first inducement for 
the Aphis to resort to the tree, says, “ a few days 
after the Honey Dew comes on, the Green and 
Blue Fly appeal's, especially upon Plum trees 
and a little lower down, in the same page, he 
says, “ It is imagined by some that this glu- 
tinous matter is perspired by the tree, and that 
the insects come to feed upon it ; and this, he 
says, is my opinion. To get rid of them, I water 
the trees two or three times a week, in a plentiful 
manner, if the weather is dry ; and while the 
Honey Dews continue upon the trees, I add a 
little salt and a quantity of broom boiled to the 
water. This mixture effectually kills the Fly, and 
does not injure the trees, if too great a quantity 
of salt is not added.” 
If the powder by Forsyth is applied for the 
purpose of destroying the insect, which I suppose 
it is, where is the use of the lime-water ? Should 
it be for the purpose of cleaning the trees of the 
dust previously applied, I should certainly give 
