Example Sentences

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These, indeed, do not possess even the degree of evidence which pertains to a well-ascertained empirical law; but admit of refutation on the empirical ground itself, without ascending to casual laws.

From A System Of Logic, Ratiocinative And Inductive by Mill, John Stuart

Nevertheless there are some well-ascertained and remarkable facts, which, as we shall immediately see, show that the act of crossing in itself undoubtedly tends to increase or re-establish the fertility of hybrids.

From The Variation of Animals and Plants Under Domestication, Volume II (of 2) by Darwin, Charles

There is nobody that can be heard for a moment to argue against the plain, obvious, declared, well-ascertained meaning of words.

From History of Woman Suffrage, Volume II by Stanton, Elizabeth Cady

The above estimate indicates a far higher rate; and this follows from the well-ascertained fact, that the area of deposition is many times smaller than the area of denudation.

From Island Life Or the Phenomena and Causes of Insular Faunas and Floras by Wallace, Alfred Russel

It is, however, a well-ascertained fact that when the force is weak a bright light exerts an interfering action on some of the phenomena.

From Mysterious Psychic Forces An Account of the Author's Investigations in Psychical Research, Together with Those of Other European Savants by Flammarion, Camille