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Among the borers which do most injury in destroying valuable timber are the hickory-bark beetle, the bark-boring grubs which kill oak, chestnut, birch and poplar trees, the locust borer, the chestnut timber-worm and the Columbian timber beetle.
In this way, infections which are not too severe can often be remedied. The bark-boring beetles are the most destructive insects that attack our forests. They have wasted enormous tracts of pine timber throughout the southern states. The eastern spruce beetle has destroyed countless feet of spruce. The Engelmann spruce beetle has devastated many forests of the Rocky Mountains.
Near the hole where Maya had set herself up for the summer lived a family of bark-boring beetles. Fridolin, the father, was an earnest, industrious man who wanted many children and took immense pains to bring up a large family. He had done very well: he had fifty energetic sons to fill him with pride and high hopes.
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