. 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. lOG Male Moth of the Geom- etra hntmnta, one of the Span-worms. are sometimes laid waste by these devourers. They will even fill ditches that have been dug to arrest their progress, and the only- way to control them is to collect in winter and
. 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. lOG Male Moth of the Geom- etra hntmnta, one of the Span-worms. are sometimes laid waste by these devourers. They will even fill ditches that have been dug to arrest their progress, and the only- way to control them is to collect in winter and burn the mosses in which they are concealed. 696. The Noctuce, or owlet moths, chiefly fly by night, and are thick-bodied, swift-flying moths, that do considerable damage to vegetation, and some of them live exposed on the leaves of trees and shrubs, but the greater part feed only by night. 697. The Geometrce, or span worms, live mostly in the larva state only on the leaves of trees, and undergo their transformation in the ground. Their larvae derive their name from their manner of crawl- ing, by drawing up the body into an arch, and then reaching forward for a new hold. When disturbed, they drop by a silken thread, till the danger is over, and then climb back again to their former place, with a tolerably rapid motion, by seizing the thread Avith their jaws and forelegs. 698. The canker-worm female moths are nearly without win^-s, and are sluggish in their movements. They in- stinctively make their way from the ground where they have been hatched towards the nearest trees, and slowly creep up the trunks, pairing with their winged mates in their ascent. They are chiefly in- jurious to the apple and elm trees, but also attack the plum, cherry, and lime trees, and strip them of the pulj^y part of the leaves, leaving the mid- ribs and veins remaining. 699. The Tortricfs, or- leaf- rollers, are so called from the cylindrical rolls that they form^OS. Larva of the ranker-worm, and the
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectforestsandforestry
