Geological Contemporaniety and Persistent Types of Life

Geological Contemporaniety and Persistent Types of Life

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Geological Contemporaniety and Persistent Types of Life by Thomas Henry Huxley

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1862

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Geological Contemporaniety and Persistent Types of Life

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Book Excerpt

r of succession established in one locality holds good, approximately, in all.

The first of these laws is universal and irreversible; the second is an induction from a vast number of observations, though it may possibly, and even probably, have to admit of exceptions. As a consequence of the second law, it follows that a peculiar relation frequently subsists between series of strata, containing organic remains, in different localities. The series resemble one another, not only in virtue of a general resemblance of the organic remains in the two, but also in virtue of a resemblance in the order and character of the serial succession in each. There is a resemblance of arrangement; so that the separate terms of each series, as well as the whole series, exhibit a correspondence.

Succession implies time; the lower members of a series of sedimentary rocks are certainly older than the upper; and when the notion of age was once introduced as the equivalent of succession, it was no wonder that correspondence

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FEATURED AUTHOR - Dale E. Lehman writes mystery, science fiction, and occasional nonfiction. His Howard County Mystery series, set in Howard County, Maryland, includes "The Fibonacci Murders," "True Death," and "Ice on the Bay." A veteran software developer, amateur astronomer, bonsai artist in training, and member of the Baha'i Faith, his writing has appeared in "Sky & Telescope" magazine and on Medium.com. With his wife Kathleen (co-author of "Ice on the Bay"), he owns and operates the imprint Red Tales.… Read more