The two kinds of truth : a test of all theories with special application to those of creation, instinct, and immortality, and showing evolution to be a natural, not a universal, truth / by T.E.S.T., an old life member of the British Association for the Advancement of Science.

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The two kinds of truth : a test of all theories with special application to those of creation, instinct, and immortality, and showing evolution to be a natural, not a universal, truth / by T.E.S.T., an old life member of the British Association for the Advancement of Science. Public Domain Mark. Source: Wellcome Collection.