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 288
ageis apparent, I now propose an arrangement at least free fromthe objections of the preceding ones, whatever it may havepeculiar to itself. I propose to use, as my medium of circulation, any me-tallic alloy which will melt at a tempeiature not greatlyexceeding 212° Fahrenheit, for this purpose:… … tains within its whole length another range of small gastubes, the extremities of which are at a and b. The tubesare arranged in any of the usual forms to produce circidation,and have at one extreme a hollow cylindrical wrought-ironboiler (c) which, together with the interspace between theoutside…
