Note 6 — Chapter XVI · CAUSES WHICH INTERFERE WITH THE FREE CROSSING OF VARIETIES—INFLUENCE OF DOMESTICATION ON FERTILITY.
Reading edition
For the Norfolk sheep, see Marshall’s ‘Rural Economy of Norfolk,’ vol. ii. p. 136. See Rev. L. Landt’s ‘Description of Faroe,’ p. 66. For the ancon sheep, see ‘Phil. Transact.,’ 1813, p. 90.