Forcing-houses and pine-stoves

671. Forcing-houses and pine-stoves appear to have been introduced in the early part of the eighteenth century; but forcing by hotbeds and dung placed behind walls of boards were, according to Switzer (Fruit Gardener) and Lord Bacon, in use for an unknown length of time. (See Bradley's Treatise on Husbandry and Gardening, 1724.)