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Bog, hæftet On Fucoides in the Coal Formations (Classic Reprint) af Leo Lesquereux

On Fucoides in the Coal Formations (Classic Reprint)

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Excerpt from On Fucoides in the Coal Formations

Though the very clear descriptions and good figures given by Prof. Hall seem indeed to indicate, at least for his new species, the growth of a frond around a spiral axis, it is plain also that we cannot suppose for the plant her... Læs mere

Excerpt from On Fucoides in the Coal Formations

Though the very clear descriptions and good figures given by Prof. Hall seem indeed to indica... Læs mere

Produktdetaljer:

Sprog:
Engelsk
ISBN-13:
9781334398568
Sideantal:
26
Udgivet:
01-11-2016
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Excerpt from On Fucoides in the Coal Formations

Though the very clear descriptions and good figures given by Prof. Hall seem indeed to indicate, at least for his new species, the growth of a frond around a spiral axis, it is plain also that we cannot suppose for the plant here above described a similar mode of develop ment. The same can be said, I think, of both the forms represented in Prof. Hall's report, the one p. 80, fig. 2, which the author considers as a distorted portion of a last volution of a spiral of Spimphyton Cbudw-galli; and the other, p. 81, fig. 3, named S. Velum. For the first of these fronds has, as it has been remarked, exactly the same general form and appearance as the plant represented fig. 2 of our plate, and the other bears at one of its corners the broken remains of what is rightly called a stem by M. Vanuxem, which indicates a mode of growth similar to that of our Caulcrpites marginatus. Therefore, these closely related three forms should be forcibly ejected from the genus Spirophyton, this name being inapplicable to plants whose growth has been as a plain untorted lamina.

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This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

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