Hereditary Genius: An Inquiry into Its Laws and Consequences

Galton did not substantially rewrite the book for its 1892 second edition: in his own preface to that printing he states he left the 1869 text essentially as first published rather than recast it, limiting himself to minor corrections and a handful of amendments, and added a lengthy new prefatory chapter responding to the intervening years' developments and critics. A title page dated 1892 or reading 'Second Edition' identifies this later printing, distinguished from the 1869 first chiefly by that added preface rather than by a rewritten body text.