Birds: A Miscellaneous Collection of Thirty-Seven Pamphlets About Birds (Classic Reprint) - Hardcover

Alvin Seale

9780656003846: Birds: A Miscellaneous Collection of Thirty-Seven Pamphlets About Birds (Classic Reprint)

Hardcover

ISBN 10: 0656003847 ISBN 13: 9780656003846

Publisher: Forgotten Books, 2018

Excerpt from Birds: A Miscellaneous Collection of Thirty-Seven Pamphlets About Birds

During the last few decades much interest has been aroused in the preservation and extension of forest areas within the United States, and large sums of money have been spent on our National Forests. Meanwhile scientists have been studying means to combat the insect enemies of forests, which in some cases have threatened the total destruction of large tracts. There is probably no species of land plant that has not at least one insect enemy, and the trees of the forest furnish food and homes for legions. In the Fifth Report of the United States Entomological Commission over 400 species of insects are reported to feed on the oak, and the opinion is expressed that this number is far below the total. In the same Work about 80 species are said to feed on the elm, 170 on the hickory, 41 on the locust, 100 on the maple, 105 on the birch, 186 on the willow, and 165 on the pine; and in each case the list is confessedly incomplete.

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