. 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. Insect Ravages in Woodlands. 167. 91. Vertical Sentionthroiigh the Burrows o£ the Bostrichus lineatus. emerge through holes eaten in the bark, and come forth as perfect insects. 664. Climatic vicissitudes have great influence upou the multipli
. 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. Insect Ravages in Woodlands. 167. 91. Vertical Sentionthroiigh the Burrows o£ the Bostrichus lineatus. emerge through holes eaten in the bark, and come forth as perfect insects. 664. Climatic vicissitudes have great influence upou the multiplication or decrease in the number of insects. A very hot and dry season may favor an increase, or an unusually cold, wet, and backward one may destroy them. 665. Insectivorous birds do much to keep injurious insects in check, and where there is an abundance of this food, they will sometimes appear in great numbers. The presence of these birds is therefore to be encouraged; and as groves and belts of timber are multiplied, the conditions favoring their coming and sojourn, to the benefit of our grain and fruits, are increased. For these reasons they should be strongly protected by efficient game laws, and by public sentiment, against their destruction, or the disturbance of their nests. 665J. In some countries, as in France, the importance of protect- ing birds is taught in the schools, and the children are shown how to distinguish the useful kinds of birds, small animals, reptiles, and insects from those that are injurious, and the best means for pro- tecting the former, and of destroying the latter. Little "Protec- tion Societies" are organized among the children, for preventing in- juries to birds and their nests, and various means are devised to impress the young with correct ideas concerning the interests depending upon the allies of the field. 666. In nurseries, gardens, orchards, and parks, we may some- times adopt measures for the destruction of insects, when th
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectforestsandforestry
