Note 6 — Chapter XVII · ON THE GOOD EFFECTS OF CROSSING, AND ON THE EVIL EFFECTS OF CLOSE INTERBREEDING.
Reading edition
Mr. Willoughby Wood, in ‘Gardener’s Chronicle,’ 1855, p. 411; and 1860, p. 270. See the very clear tables and pedigrees given in Nathusius’ ‘Rindvieh,’ s. 72-77.