A Monograph of the Existing Crinoids, Vol. 1
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| Stand: | 2015-08-04 03:50:33 |
Produktbeschreibung
Excerpt from A Monograph of the Existing Crinoids, Vol. 1: The Comatulids Upon the return of the United States Fisheries steamer Albatross from her cruise in 1906 through the Bering Sea and in Asiatic Russian and Japanese waters, during which I accompanied her as acting naturalist, the Commissioner of Fisheries Hon George M. Bowers, very kindly intrusted to me the work of identifying and describing the Crinoidea which had been collected. The aim of the work as originally planned was the preparation of a memoir dealing only with the specimens collected on this cruise, but it was later suggested that I include in my study the crinoids from the North Pacific which had previously been collected by the Albatross, and had been deposited in the United States National Museum. The work proved to be far more of an undertaking than had been anticipated; so great was the number of new species and so radically did they alter the conception of the recent representatives of the Crinoidea as a whole that I was at last forced to begin at the beginning and to review critically the whole subject. The two great monographs of Dr. Philip Herbert Carpenter were, of course the foundation upon which I expected to build; but, with the enormous mass of material at hand, I soon discovered that the subject must be approached along somewhat different lines from those by which it was approached by Carpenter, especially in regard to the comatulids. I therefore laid aside the literature and, with nothing but the specimens before me, attempted to elucidate the systematic problems presented with a mind free from preconceived ideas. The specimens were grouped into species and the species into tentative genera, and these genera again into tentative families upon characters, both external and internal, which I myself determined; when my ideas had become sufficiently crystallized I again look up the study of the literature and compared my results with those of Carpenter. Up to this time the work had all been based upon north Pacific species from the Asiatic and American Coasts. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com 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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