Excerpt from On Fucoides in the Coal Formations It is right to remark, nevertheless, that we have-now a genus of living Algae, repre sented by one known Species only, whose growth seems to be somewhat analogous to the Spiral development of the Spirop/zytmz, as it is described by Prof. Hall. It is the Thales siopliyllu'm clatln'us, Post and Rup., growing on the northern shores Of the Pacific, in Rus sian America. According to Mertens, who has described it, the stipe Of this plant is very bushy and branching, each branch ...
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Excerpt from On Fucoides in the Coal Formations It is right to remark, nevertheless, that we have-now a genus of living Algae, repre sented by one known Species only, whose growth seems to be somewhat analogous to the Spiral development of the Spirop/zytmz, as it is described by Prof. Hall. It is the Thales siopliyllu'm clatln'us, Post and Rup., growing on the northern shores Of the Pacific, in Rus sian America. According to Mertens, who has described it, the stipe Of this plant is very bushy and branching, each branch bearing at its extremity a leaf, which unfolds spirally in such a manner that a spiral border, wound, round the stipes, indicates the growth of the frond. This frond presents a large convex bent lamina without nerves, or, to a certain de gree, a leaf, of which one-half is wanting, for the stipe may be considered as an eccentric nerve.e Though an analogy of development may, from this description, appear to exist between the fossil and these living Algae, there is, I think, an evident and great difference. In Spirophyton, as it is described and figured, it is not a kind of border or stalk, which causes by its own twisting the bend of the frond; it is the lamina which unfolds itself in spiral from its point of attachment and expands in ascending. Hence, fronds of this kind can be but simple, while the Northern Algae of the Pacific are remarkably bushy branch ing. These, moreover, belong to a class of highly organized Algae, while in early geo logical ages and from analogy with what we know of other beings, we can look in the vegetable world for types only of a very simple organization. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at ... 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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