An average yield of six bushels per acre is what Walter de Henley thinks necessary to secure profitable farming.§ 6. Stock, Pigs and Poultry§ 7. Sheep§ 8. Increase of sheep farming§ 9. Consequent increase of enclosuresCHAPTER II THE WOOLLEN TRADE AND MANUFACTURES§ 1. England’s monopoly of wool§ 2. Wool and Politics[18] See note 7, p. [244,] on Flanders and England.[19] See note 8, p. [243,] on Other Sources of Income.