"The primary rocks, ... I regard as the deposits of a period in which the earth's crust had sufficiently cooled down to permit the existence of a sea, with the necessary denuding agencies,-waves and currents,-and, in consequence, of deposition also; but in which the internal heat acted so near the surface, that whatever was deposited came, matter of course, to be metamorphosed into semi-plutonic forms, that retained only the stratification."

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Source: Hugh Miller, Harriet Myrtle (1859). “Sketch book of popular geology: Popular geology: A series of lectures read before the Philosophical Institution of Edinburgh”, p.297

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Hugh Miller

Geologist, Author

Hugh Miller was a Scottish geologist and writer known for his influential work in geology and his passionate advocacy for the natural sciences.

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"Prayer is so mighty an instrument that no one ever thoroughly mastered all its keys. They sweep along the infinite scale of man's wants and God's goodness."

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"Nature is a vast tablet, inscribed with signs, each of which has its own significancy, and becomes poetry in the mind when read; and geology is simply the key by which myriads of these signs, hitherto indecipherable, can be unlocked and perused, and thus a new province added to the poetical domain."

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