248 On the destruction of the Slug. 



ored or spotted fly, quick in motion, which in some places are 

 making the rose bush nearly as bad in appearance, as the ef- 

 fects of the slug. 



t-^p/u's, or plant louse, under the name of green or brown 

 fly; an insect not quick in motion, very abundant on, and 

 destructive to, the young shoots of the rose, peach trees, and 

 many other plants. The Black Fly, a very troublesome and 

 destructive insect, that infests the young shoots of the cherry 

 and the snow-ball tree. 1 have never known any positive 

 cure for the effects of this insect, until this time. 



Two varieties of insects that are destructive to, and very 

 much disfigure, evergreens, the balsam or balm of Gilead fir 

 in particular; one an aphis, the other very much like the rose 

 slug. 



The Icarus, or red spider, that well known pest to gar- 

 deners. 



The above insects are generally all destroyed by one ap- 

 plication, if properly applied to all parts of the foliage; the 

 eggs of most insects continue to hatch in rotation during their 

 season; to keep the plants perfectly clean, it will be necessary 

 lo dress them two or three times. 



The disease^ JMildeic, on the gooseberry, peach, grape vine, 

 Sec. &:c., is checked, and entirely destroyed by a weak dress- 

 ing of the solution. 



The Canker JVorm. As the trees on this place are not 

 troubled with this worm, I have not had an opportunity of try- 

 ing experiments by dressing the trees, but have collected the 

 worms, which the liquid kills by being touched with it. The 

 expense of labor and engines for dressing large trees, to be 

 effectual, may be more than the application of it will warrant, 

 but I think by saturating the ground under the trees with the 

 liquid, about the time the insects change from the chrysalis 

 state and ascend the trees, it will destroy them; or when the 

 moths are on the tree, before laying their eggs, they may be de- 

 stroyed without much labor. In either case, the mixture may 

 be applied much stronger than when it comes in contact with 

 the foliage. Laying it on the trunk and branches of the tree, 

 of the consistency of thick paint, destroys the brown scaly in- 

 sect on the bark, and gives the tree a smooth, glossy, and 

 healthy appearance. 



I remain. Sir, your obedient servant, 



David Haggerston. 

 Watertown^ June 19, 1841. 



