The gardener's magazine and register of rural & domestic improvement (1826)
Loudon, J. C. (John Claudius), 1783-1843, A. & R. Spottiswoode, printer, United States. Patent Office. Scientific Library, former owner DSI · London : Longman, Rees, Orme, Brown and Green · leaf 269
The letters refer to the same parts in the three figures; a a areair-flues covered with plain tiles; 6, tiles covered with sand, to re- … ceive the plants; c c, small gratings to admit air, and to excludevermin; d d^ brick pillars to receive the tiles. This pit was erected for heaths, and for rearing and preserv- R 4 248 Plan, Sfc, of a small span-roofed Pit,
