To Protect Migratory Game And Insectivorous Birds of the United States ... Report
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In our eReader you can find the full English version of the book. Read To Protect Migratory Game And Insectivorous Birds of the United States ... Report Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book To Protect Migratory Game And Insectivorous Birds of the United States ... Report
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To quickly assess the difficulty of the text, read a short excerpt:
The natural increase of one pair of gipsy moths would defoliate the United States in eight years.
These estimates I quote from Prof. Forbush, who in turn gathered them from the United States Biological Survey, and we may say that these cases are fair examples of the reproductive powers of the insectile world. Locusts, army worm, and chinch bugs, unless checked in procreation soon become countless hordes, devastating wide areas of the earth's surface.
It is to be remembered that insects live to ...eat. Some of them increase their size at birth 10,000 times in 30 days. Dr. Lintner, of the New Jersey Board of Agriculture, reports 176 species of insects attacking the "apple tree. (U. S. Biological Survey.) About the same number attack the peach, plum, and cherry trees. Dr. Packard finds 400 species feeding upon the oak; 300 attack the conifera.
The number feeding upon cereals, grains, and garden crops is also very large.
The reports of the Bureau of Entomology show that destruction by some insects is widely spread and are increasing.
What to read after To Protect Migratory Game And Insectivorous Birds of the United States ... Report?
You can find similar books in the "Read Also" column, or choose other free books by United States. Congress. Senate. Committee On Forest Reservations And the Protection of Game to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
The natural increase of one pair of gipsy moths would defoliate the United States in eight years.
These estimates I quote from Prof. Forbush, who in turn gathered them from the United States Biological Survey, and we may say that these cases are fair examples of the reproductive powers of the insectile world. Locusts, army worm, and chinch bugs, unless checked in procreation soon become countless hordes, devastating wide areas of the earth's surface.
It is to be remembered that insects live to ...eat. Some of them increase their size at birth 10,000 times in 30 days. Dr. Lintner, of the New Jersey Board of Agriculture, reports 176 species of insects attacking the "apple tree. (U. S. Biological Survey.) About the same number attack the peach, plum, and cherry trees. Dr. Packard finds 400 species feeding upon the oak; 300 attack the conifera.
The number feeding upon cereals, grains, and garden crops is also very large.
The reports of the Bureau of Entomology show that destruction by some insects is widely spread and are increasing.
What to read after To Protect Migratory Game And Insectivorous Birds of the United States ... Report?
You can find similar books in the "Read Also" column, or choose other free books by United States. Congress. Senate. Committee On Forest Reservations And the Protection of Game to read onlineMoreLess
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