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 265
lant, I had arrange-ments made, by the formation of a suitable bed of soil over amoist hot-air chamber, as the section shown \v\Jig. 1 7. will morefully explain. In Jig- 17. a a are hot-air tubes, or open pilasters,that can be opened or shut at pleasure; b is the bed of compost,&c, as… … Fig. 17. Niveris Pine-Pit. what the effect would be from the application of a powerful heatfrom below on a bed of soil immediately above, and, conse-quently, on the crowns and suckers placed free under such cir-cumstances. It may be well here to premise that the wholeextent of the bottom of the…
