Note 616 — Chapter X · THE CONNEXION BETWEEN THE OPEN-FIELD SYSTEM AND SERFDOM OF ENGLAND AND OF THE ROMAN PROVINCES OF GERMANY AND GAUL.
Reading edition
B. M. Ancient Charters, ii. Cotton MS. Aug. ii. 42, A.D. 837. The Welsh short yoke was that of two oxen, i.e. a fourth part of the full plough team.