Description of the Coal Flora of the Carboniferous Formation in Pennsylvania and Throughout the United States, Vol. 3 (Classic Reprint) PDF Download
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Author: Leo Lesquereux
Publisher: Forgotten Books
ISBN: 9781391341736
Category :
Languages : en
Pages : 352
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Book Description
Excerpt from Description of the Coal Flora of the Carboniferous Formation in Pennsylvania and Throughout the United States, Vol. 3 Like the vegetation of the present epoch, that of the Car boniferous has been modified and diversified by local cir cumstances and is therefore differently represented at dif ferent localities if separated by a considerable distance. This can easily be seen in comparing the Coal Flora of Penn sylvania and Ohio with that of Illinois, Missouri, Kansas etc. A'certain degree of relation only is recognizable be tween the plants oi strata of the same stage; but a large number of species are only locally found. The differences in the vegetation are still more marked according to the stratigraphical distribution of the measures, or between the plants found in strata of different horizons; and as new coal fields have been recently opened and coal beds worked in Virginia, Tennessee, Alabama, Georgia, etc at a lower stage than that of the northern basins, a mass of specimens of fossil plants, not yet known in this country, have been discovered and sent from those localities. 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.
Author: Leo Lesquereux
Publisher: Forgotten Books
ISBN: 9781391341736
Category :
Languages : en
Pages : 352
Get Book Here
Book Description
Excerpt from Description of the Coal Flora of the Carboniferous Formation in Pennsylvania and Throughout the United States, Vol. 3 Like the vegetation of the present epoch, that of the Car boniferous has been modified and diversified by local cir cumstances and is therefore differently represented at dif ferent localities if separated by a considerable distance. This can easily be seen in comparing the Coal Flora of Penn sylvania and Ohio with that of Illinois, Missouri, Kansas etc. A'certain degree of relation only is recognizable be tween the plants oi strata of the same stage; but a large number of species are only locally found. The differences in the vegetation are still more marked according to the stratigraphical distribution of the measures, or between the plants found in strata of different horizons; and as new coal fields have been recently opened and coal beds worked in Virginia, Tennessee, Alabama, Georgia, etc at a lower stage than that of the northern basins, a mass of specimens of fossil plants, not yet known in this country, have been discovered and sent from those localities. 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.
Author: Leo Lesquereux
Publisher:
ISBN:
Category : Paleobotany
Languages : en
Pages : 210
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Book Description
Author: Leo Lesquereux
Publisher:
ISBN:
Category : Paleobotany
Languages : en
Pages : 410
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Author: Leo Lesquereux
Publisher: Rarebooksclub.com
ISBN: 9781230169811
Category :
Languages : en
Pages : 66
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Book Description
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1884 edition. Excerpt: ...without symmetrical order, short, about 3 c. m. long, 3 m. m. in diameter, linear, narrowed into a blunt apex. The bundles of spores are irregularly placed, some in small compact groups, others more disseminated or spread along some leaves as if forced by compression out of a tubular envelope or sporange. All the spores are macrospores, 1 m. m. in diameter, as figured f. 3a. The fragments show the plant in its whole length, as an agglomeration of leaves compressed from the base to the apex which is genrally broken. The texture, as seen at the surface is that of Tceniophyllum contextum, Lesqx., "Coal Flora," p. 465, PI. LXXXII, Figs. % 2a. These plants may be the young shoots of the same species. In the description of T. contextum, I remarked on the relation of the plants to Isoetes. The relation is still more evident in these short plants. But the nature and the character of the sporanges are as yet unexplained. Habitat--Cannelton. No. 774 of Lacoe's collection. Trochophyllttm, Lesqx. "Coal Flora,"p. 6S. That generic name was used, I. c, for the provisory description of vegetable remains which, in a too deficient state of preservation, could not be definitively described, and which, therefore, could not be affixed to their legitimate place until their affinities had been demonstrated by the discovery of better specimens. The first of the two species placed in the genus Trochophyllum, viz: T. clavatum, described I. c., p. 65, PI. III, Figs. 21-23, has been recognized as representing half destroyed fragments of strobiles of Sigillaria, described here below as Sigillariostrobus Laurencianus. Of the other species, T. lineare, I. c. p. 64, PI. III, Figs. 24-256, I have now received a large number of specimens which...
Author: Leo 1806-1889 Lesquereux
Publisher: Legare Street Press
ISBN: 9781019703090
Category :
Languages : en
Pages : 0
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One of the most important works of American paleobotany, this book by Leo Lesquereux offers a comprehensive description of the coal flora of the Carboniferous Formation in Pennsylvania and the United States. It covers the morphology and anatomy of fossil plants, their distribution and evolution, and their significance for the study of geological history and climate change. A must-read for anyone interested in the history of Earth's biosphere and the evolution of plant life. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author: Leo Lesquereux
Publisher:
ISBN:
Category : Paleobotany
Languages : en
Pages : 574
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Author: Leo 1806-1889 Lesquereux
Publisher: Legare Street Press
ISBN: 9781013812644
Category :
Languages : en
Pages : 358
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Book Description
This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.
Author: Leo Lesquereux
Publisher: Forgotten Books
ISBN: 9781333788834
Category : Science
Languages : en
Pages : 802
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Book Description
Excerpt from Description of the Coal Flora of the Carboniferous Formation in Pennsylvania and Throughout the United States, Vol. 1: 1. Cellular Cryptogamous Plants, Fungi, Thalassophytes; 2. Vascular Cryptogamous Plants, Calamariae, Filicaceae (Ferns) Dear sir: My report on the Coal Flora of Pennsylvania and the other United States having been delivered to you some months ago, and the first half of it, as far as to the end of the Ferns, being now printed as a separate volume, I Offer, at your suggestion, the following remarks as a short preface to it reserving, the more elaborate Introduction, which I have prepared to the whole work, to be inserted at the close Of the descriptions in the second volume. 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."
Author: Leo Lesquereux
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Leo Lesquereux
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 283
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Book Description
