Statistics for occurrence #1 of “Aetna” in book 6, chapter 2, section 3 of Strabo, Geography:
...becomes millstone, keeping the same color it had when in a liquid state. And ash is also produced when the stones are burnt, as from wood; therefore, just as wood-ashes nourish rue, so the ashes of Aetna , it is reasonable to suppose, have some quality that is peculiarly suited to the vine.
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