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 403
fsummer. Pits of this size have a decided advantage over largerones for early work, as you can keep up in them at all times aquicker and more lively heat, and with much less expense, thanif they were larger; because, the larger the lights or pits are,the stronger the linings will require to be. You… … three, six, or more lights, as re-quired, may be worked in succes-sion. The dung in these openings,when once put in, is not to be turnedlike the linings; since, as the pitsare pigeon-holed, and without fluesat the ends, the roots will workthrough, and receive a deal ofnourishment from the dung in…
