Canadian Naturalist And Geologist And Proceedings Of The Natural History Society Of Montreal

Author : J. W. Dawson
Publisher : Forgotten Books
ISBN 13 : 9780267137732
Total Pages : 538 pages
Book Rating : 4.1/5 (377 download)

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Download or read book The Canadian Naturalist and Geologist, and Proceedings of the Natural History Society of Montreal, 1863, Vol. 8 (Classic Reprint) written by J. W. Dawson and published by Forgotten Books. This book was released on 2018-01-29 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Canadian Naturalist and Geologist, and Proceedings of the Natural History Society of Montreal, 1863, Vol. 8 In 1859 I made an examination of all the Calciferous and Chazy fossils, in the Provincial Museum, and found that there were 41 species in the former and 129 in the latter, but not one species was clearly identified as common to the two formations. I believe that between the Calciferous and Chazy, as developed west of the line, in Canada, there is an almost total break in the succession of life. There are few geologists who believe in periodic extinctions of all animal life extending over the Whole earth. It is almost certain, that gaps of this kind are mere local phenomena. And if so, then somewhere else strata will 'sooner or later be found, holding a fauna composed partly of species occurring in the beds below and partly of those found in beds above the gap, thus connecting the two formations. I think it probable that a large portion of the Quebec group is of an age between the Calciferous and Chazy. But I do not believe that this would be sufficient to account for so great a number of species distinct from those of these two formations. The existence of zoological provinces in the Silurian seas, although not yet clearly proved, is something that should always be kept in mind, while endeavouring to work out a problem such as that presented by the fauna of the Quebec group. 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.