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 292
the boiler may beused as a common one, independent of the lime, by shuttingthe damper h, and opening two, placed one at each side, asat /, by which the flame passes only on the outside of theboiler. This latter arrangement may be adopted also duringthe time the lime may be slacking in the internal… … The arguments that may be adduced in favour of thisscheme are, that, wherever there is a large range of hot-houses, lime is continually wanting for manure, and that thusthe lime burnt would be no drug, and the heat disengaged inslacking it might be economically thus employed: that, inthe burning of…