Page:Quarterly Journal of the Geological Society of London, vol. 25.djvu/167

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TYLOR—QUATERNARY GRAVELS.
73

Fig. 7.—Section of Surface of Lower Carboniferous Series, Hirwain Common.

Quarterly Journal of the Geological Society of London, Volume 25, 0167.png The author is desirous of drawing the attention of geologists to the contour of the surface in this section as illustrative of his hypothesis of parabolic curves, enunciated in his paper read on November 11, 1868 (supra, p. 7)—Edit. Jan 28, 1869.