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 202
a level, itmay, at first sight, appear that this is a necessary condition tosuccess; but a little reflection will render it evident that, if theheight which the water stands in the boiler and the reservoirsbe equal, and as high as the highest part of the pipes, thecirculation between them will take… … same effect as if the full dimensions of the boiler (b) and reser-voir (c) had been so extended. The pipes between a boiler Transactions of the Horticultural Society. 191 and reservoir so adjusted may be conducted in any direction,and ascend and descend at pleasure, or in the most irregularmanner…
