Direct observation of the testimony of the earth ... is a matter of the laboratory, of the field naturalist, of indefatigable digging among the ancient archives of the earth's history. (Henry Fairfield Osborn)

Direct observation of the testimony of the earth ... is a matter of the laboratory, of the field naturalist, of indefatigable digging among the ancient archives of the earth's history.

Henry Fairfield Osborn

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archives digging earth field history laboratory matter naturalist

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