Vestiges of the natural history of creation / [Anon].

  • Robert Chambers
Date:
1844
Catalogue details

Licence: Public Domain Mark

Credit: Vestiges of the natural history of creation / [Anon]. Source: Wellcome Collection.

    62/408 page 54
    COMMENCEMENT OF ORGANIC LIFE— SEA PLANTS, CORALS, ETC. WE can scarcely be said to have passed out of these rocks, when we begin to find new conditions in the earth. It is here to be observed that the subsequent rocks are formed, in a great measure, of matters derived from the substance of those which went before, but contain also beds of lime- stone, which is to no small extent composed of an ingredient which has not hitherto appeared. Limestone is a carbonate of lime, a secondary compound, of which one of the ingredients, car- bonic acid gas, presents the element carbon, a perfect novelty in our progress. Whence this substance ? The question is the more interesting, from our knowing that carbon is the main in- gredient in organic things. There is reason to
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