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12661 results in History of science

Page 563 of 634

  • ADVERTISEMENT TO THE SECOND EDITION

  • Georges Cuvier
  • Translated by Robert Kerr
  • Book:
    Essay on the Theory of the Earth
    Published online:
    29 August 2010
    Print publication:
    06 August 2009, pp xi-xii
    First published in:
    1815

  • Summary

    It was my intention to have prefixed to this edition of the Essay on the Theory of the Earth, a general discourse on Geognosy, with the view of explaining its various relations to the other branches of Natural History, and of examining some of the criticisms that have appeared on the work itself, and the notes and preface accompanying it, but want of leisure has prevented me at present from carrying into effect this plan. I have however enlarged the Notes, and added a series of observations on a very interesting topic; the distribution of fossil organic remains throughout the crust of the Earth, and also as intimately connected with the discussions contained in the Essay of Cuvier; an account of the Mineralogy of the country round Paris; and of some remarkable mineral formations that occur in the South of England.

  • APPENDIX: MINERALOGICAL NOTES AND ILLUSTRATIONS

  • Georges Cuvier
  • Translated by Robert Kerr
  • Book:
    Essay on the Theory of the Earth
    Published online:
    29 August 2010
    Print publication:
    06 August 2009, pp 195-332
    First published in:
    1815

  • Summary

    On the Subsidence of Strata.

    M . cuvier is of opinion, that all the older strata of which the crust of the earth is composed, were originally in an horizontal situation, and have been raised into their present highly-inclined position, by subsidences that have taken place over the whole surface of the earth.

    It cannot be doubted, that subsidences, to a considerable extent, have taken place; yet we are not of opinion, that these have been so general as maintained by the illustrious author of this Essay We are rather inclined to believe, that the present inclined position of strata is in general their original one;–an opinion which is countenanced by the known mode of connection of strata, the phenomena of veins, particularly cotemporaneous veins, the crystalline nature of every species of older rock, and the great regularity in the direction of strata throughout the globe.

    The transition and floetz-rocks also are much more of a chemical or crystalline nature than has been generally imagined. Even sandstone, one of the most abundant of the floetz-rocks, occasionally occurs in masses, many yards in extent, which individually have a tabular or stratified structure; but when viewed on the great scale, appear to be great massive distinct concretions.

Page 563 of 634