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9This is not, however, surprising; for in that spot there are many quarries of hard bitumen: hence, when the water bursts out from this bituminous earth, it carries it therewith; and having come forth, the bitumen is separated from it and deposited. In Cappadocia, on the road between Mazaca and Tuana, there is a considerable lake, in which, if a piece of reed or any other substance be cast, and taken out on the following day, it will be found to have been turned into stone; but the part out of water will not have changed its quality.
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