Proceedings of the Davenport Academy of Sciences, volume 9
Proceedings of the Davenport Academy of Sciences, volume 9
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In our eReader you can find the full English version of the book. Read Proceedings of the Davenport Academy of Sciences, volume 9 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 Proceedings of the Davenport Academy of Sciences, volume 9
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spinosa : PI. XVI., figs. 124-127 ; var. spinosa.
Pemphigus carycecaulis Fitch. Third Rep. Nox. and Ben. Ins. of N. Y., p. 126 and 163.
Dactylosphcsra caryce-magnum Shimer. Trans. Am. Ent. Soc., 2, p. 391.
Dactylosphara spinosum Shimer. Trans. Am. Ent. Soc., 2, p. 397.
Phylloxera caryacaulis Riley. Seventh Rep. Nox. and Ben. Ins.
of Mo., p. 117.
Phylloxera caryacaulis Thos. Eighth Rep. Nox. and Ben. Ins. of Ills., p. 160.
Up to the present time these three forms of galls have been considered as... quite distinct species on account of their dis- similarity, two of them being smooth and the other more or less profusely covered with fleshy spines. But a careful study of the architects of these forms forces the conclusion that they are identical, there being no tangible characters by which to separate them. The spiny form of gall always grows upon trees with pubescent leaves^ such as Hicoria tomentosa^ while the smooth forms are always found upon trees with smooth leaves, such as Hicoria glabra, amara and probably other species.
What to read after Proceedings of the Davenport Academy of Sciences, volume 9?
You can find similar books in the "Read Also" column, or choose other free books by Davenport Academy of Sciences to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
spinosa : PI. XVI., figs. 124-127 ; var. spinosa.
Pemphigus carycecaulis Fitch. Third Rep. Nox. and Ben. Ins. of N. Y., p. 126 and 163.
Dactylosphcsra caryce-magnum Shimer. Trans. Am. Ent. Soc., 2, p. 391.
Dactylosphara spinosum Shimer. Trans. Am. Ent. Soc., 2, p. 397.
Phylloxera caryacaulis Riley. Seventh Rep. Nox. and Ben. Ins.
of Mo., p. 117.
Phylloxera caryacaulis Thos. Eighth Rep. Nox. and Ben. Ins. of Ills., p. 160.
Up to the present time these three forms of galls have been considered as... quite distinct species on account of their dis- similarity, two of them being smooth and the other more or less profusely covered with fleshy spines. But a careful study of the architects of these forms forces the conclusion that they are identical, there being no tangible characters by which to separate them. The spiny form of gall always grows upon trees with pubescent leaves^ such as Hicoria tomentosa^ while the smooth forms are always found upon trees with smooth leaves, such as Hicoria glabra, amara and probably other species.
What to read after Proceedings of the Davenport Academy of Sciences, volume 9?
You can find similar books in the "Read Also" column, or choose other free books by Davenport Academy of Sciences to read onlineMoreLess
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