What is furnishing evidence; asserting; proving; evidential. When a fact is supposed, although incorrectly, to be evidentiary of, a mark of, some other fact. J. S. Mill called?

evidentiary — Furnishing evidence; asserting; proving; evidential. When a fact is supposed, although incorrectly, to be evidentiary of, a mark of, some other fact. J. S. Mill. (Webster's 1913.)

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