. The elements of forestry : designed to afford information concerning the planting and care of forest trees for ornament or profit and giving suggestions upon the creation and care of woodlands with the view of securing the greatest benefit for the longest time, particularly adapted to the wants and conditions of the United States. Forests and forestry. Insects injurious to Elms. 181 Web-worm nests can be removed with mops dipped in carbolic acid solution or kerosene. 714. The elm is liable to suffer from a beetle which makes its at- tack upon the bark, in the interior and on the under side,
. The elements of forestry : designed to afford information concerning the planting and care of forest trees for ornament or profit and giving suggestions upon the creation and care of woodlands with the view of securing the greatest benefit for the longest time, particularly adapted to the wants and conditions of the United States. Forests and forestry. Insects injurious to Elms. 181 Web-worm nests can be removed with mops dipped in carbolic acid solution or kerosene. 714. The elm is liable to suffer from a beetle which makes its at- tack upon the bark, in the interior and on the under side, and with- out showing much appearance externally. The tree will begin to languish, apparently -while in the full vigor of growth, and, when cut down, the bark will in a little while loosen and fall off, disclosing a multitude of 110. Perfect Insect of the Scolidua destruclor, of natural size above, and enlarged be- low: together with the l-arva and Pupa, of natural size and enlarged; and the Burrows, under the Bark, made by the Hcolylus multistriatus. 715. A remedy has been proposed by Dr. Eugene Robert, of Paris, which consists in shaving off the outer bark down to the liber or live bark, from the whole trunk, and on scarifying down to the wood the smaller branches, by drawing a sharp, three-bladed hooking in- strument (with the middle blade somewhat shorter than the others) lengthwise along the surface. This is, of course, an expensive pro- cess, and only to be practiced in city parks, and other places where the elms are prized as shade trees. It should be done only after the summer growth is ended, and before the sap starts in spring. The disagreeable color which this process leaves, may be covered up with a paint composed of coal tar and yellow ochre, to imitate the natu- ral shade of color of the bark. It is not found necessary to burn the bark that comes off, unless it contains the perfect insects, for the larvse will die without further attention, and the eggs,
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectforestsandforestry
