The Geological History of Plants
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The Geological History of Plants is a book by John William Dawson. The text says there is an advance in elevation and complexity along with the advance in geological time, connected with the remarkable fact that in earlier times low groups attain to an elevation unexampled in later times. The text also says that the most simple and at the same time the most instructive method is to consider this historical development in the order of time.
Chapter II is headed Vegetation of the Laurentian and Early Palæozoic. The text says that in the lower part of a great system of rocks which, in some places at least, is thirty thousand feet in thickness, we find no traces of the existence of any living thing on the earth. The text says that in the middle portion of the Laurentian, rocks are found which indicate that there were already land and water, and that the waters and possibly the land were already tenanted by living beings.
About the author
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Book facts
- Author
- John William Dawson
- Pages
- 181
- Language
- English
- Genre
- Popular Science
- Formats
- PDF, EPUB, Read online