Experiments With Sugar Beets in 1890-
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On August 8 a number of gray-colored moths was observed. By the following day the number of those moths appeared to have increased a thousand- fold. If the foliage of the beets was disturbed they rose in cloud-form, and they were generally distributed over the greater portion of the plats.
About 100 of those moths were caught, inclosed in a box, and sent to the Depart- ment at Washington. In speaking of them, Mr. Howard said: " In my last letter I hazarded the guess that the insect would prove ...to belong to the genus Eurycreon, and that it would be closely allied to the common garden web worm of Kansas, Nebraska, and other Western States — Eurycreon rautalis. The moth you sent is Eurycreon stictalis. Please watch the eggs which it is depositing upon the beet leaves, and send us larva? which may hatch from them." The leaves of some beets were examined under the microscope and the eggs of the moths observed. The eggs were deposited in minute groups, and exclusively upon the underside of the leaves.
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You can find similar books in the "Read Also" column, or choose other free books by Wiley, Harvey Washington. [from Old Catalog] to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
On August 8 a number of gray-colored moths was observed. By the following day the number of those moths appeared to have increased a thousand- fold. If the foliage of the beets was disturbed they rose in cloud-form, and they were generally distributed over the greater portion of the plats.
About 100 of those moths were caught, inclosed in a box, and sent to the Depart- ment at Washington. In speaking of them, Mr. Howard said: " In my last letter I hazarded the guess that the insect would prove ...to belong to the genus Eurycreon, and that it would be closely allied to the common garden web worm of Kansas, Nebraska, and other Western States — Eurycreon rautalis. The moth you sent is Eurycreon stictalis. Please watch the eggs which it is depositing upon the beet leaves, and send us larva? which may hatch from them." The leaves of some beets were examined under the microscope and the eggs of the moths observed. The eggs were deposited in minute groups, and exclusively upon the underside of the leaves.
What to read after Experiments With Sugar Beets in 1890-?
You can find similar books in the "Read Also" column, or choose other free books by Wiley, Harvey Washington. [from Old Catalog] to read onlineMoreLess
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