Publisher Information: 1897. Galton, Francis (1822-1911). The average contribution of each several ancestor to the total heritage of the offspring. In Proc. Roy. Soc. 61 (1897): 401-413pp. Whole number, 8vo. 216 x 139 mm. Orig. printed wrappers, spine repaired. Boxed. Fine copy. Book Id: 38748
First Edition. Garrison-Morton 239. Galton's "Law of Ancestral Heredity," which states that half of an individual's hereditary makeup is supplied by his / her parents, one-quarter from grandparents, one-eighth from great-grandparents, etc. Galton's "law," based on both human and basset hound pedigrees, was adopted by both the biometrician Karl Pearson and the Mendelian geneticist William Bateson; it was instrumental in sparking the controversy between the two camps that characterized late 19th-early 20th century studies of heredity. Forrest, p. 314.