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Quotation from Principles of Geology by Charles Lyell
“it is clear that the columns must have continued for a long time in an erect position, immersed in salt water, and then the submerged portion must have been upraised to the height of about twenty-three feet above the level of the sea.”
Principles of Geology, Book II, Ch. XXIX (Ninth edition (New York: D. Appleton, 1854), Project Gutenberg text)

Lyell's conclusion from the zone of mollusc borings on the columns of the Temple of Serapis at Pozzuoli, which he visited in 1828.
Citation: "it is clear that the columns must have continued for a long time in an erect position, immersed in salt water, and then the submerged portion must have been upraised to the height of about twenty-three feet above the level of the sea." — Charles Lyell, Principles of Geology, Book II, Ch. XXIX (Ninth edition (New York: D. Appleton, 1854), Project Gutenberg text). (id lyell-principles-of-geology-q6)
Portrait: PSM V01 D242 and V20 D610 Charles Lyell, Unknown engraver, Public domain.
