A Year in Science a Text book for First Year in High Schools
A Year in Science a Text book for First Year in High Schools
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In our eReader you can find the full English version of the book. Read A Year in Science a Text book for First Year in High Schools 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 A Year in Science a Text book for First Year in High Schools
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Of Agriculture.
Fig. 140. The potato beetle is one of the best known of the garden pests.
us each year of about $500, 000, 000 worth of crops, forest trees, and lumber. There are thousands of dif- ferent kinds of these pests. Some devour foliage, others attack fruits and seeds, and still others bore into the wood of the tree on which they live. In combating with insects the farmer is assisted and directed by the Bureau of Entom- ology of the United States Department of Agriculture and by variou...s state experimental sta- tions. The most effective means of control thus far found is by poison- ous sprays. By this method both the adult and the RELATION OF ANIMALS TO MAN 291 Permission of U. S. Dept. Of Agricul- ture.
Fig. 141. Boll- weevil, one of the most important en- emies of cotton plants.
Permission of U. S. Dept. Of Agricul- ture.
Fig. 142. Codling moth; A, adult; B, larva in apple; C, pupa or chrysalis.
After U. S. Dept. Of Agriculture. Y\K 143 Corn plant two feet tall infested with chinch bugs.
What to read after A Year in Science a Text book for First Year in High Schools?
You can find similar books in the "Read Also" column, or choose other free books by Ada Louise Weckel to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Of Agriculture.
Fig. 140. The potato beetle is one of the best known of the garden pests.
us each year of about $500, 000, 000 worth of crops, forest trees, and lumber. There are thousands of dif- ferent kinds of these pests. Some devour foliage, others attack fruits and seeds, and still others bore into the wood of the tree on which they live. In combating with insects the farmer is assisted and directed by the Bureau of Entom- ology of the United States Department of Agriculture and by variou...s state experimental sta- tions. The most effective means of control thus far found is by poison- ous sprays. By this method both the adult and the RELATION OF ANIMALS TO MAN 291 Permission of U. S. Dept. Of Agricul- ture.
Fig. 141. Boll- weevil, one of the most important en- emies of cotton plants.
Permission of U. S. Dept. Of Agricul- ture.
Fig. 142. Codling moth; A, adult; B, larva in apple; C, pupa or chrysalis.
After U. S. Dept. Of Agriculture. Y\K 143 Corn plant two feet tall infested with chinch bugs.
What to read after A Year in Science a Text book for First Year in High Schools?
You can find similar books in the "Read Also" column, or choose other free books by Ada Louise Weckel to read onlineMoreLess
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