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 372
also the walls of the pits and the pathways. By the wallsof the pits being made of iron, any pit, however small, is in-creased in width and length by the difference between the thick-ness of a plate of iron, and that of a 9 in. or a 5 in. brick wall,a 3 in. flagstone set on edge, or plates of slate… … also that, in putting up, they can be fitted more accurately to therafters, so as effectually to exclude the weather. Another ad-vantage of wooden sashes and iron rafters is, that, while the latter 54
