Page:Transactions of the Geological Society, 1st series, vol. 4.djvu/148

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although, from the circumstances already mentioned, that separation is in many cases independent of it. It is far beyond the bounds of this paper to pursue further the very interesting circumstances under which the whole of this formation of trap appears; and I shall probably take some future opportunity of entering at large into its history. I shall here therefore terminate these miscellaneous remarks, which appeared to me necessary to illustrate the description of Cruachan.