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 242
230 Paxtons Magazine of Botany, which vary from 15 in. to 18 in. asunder throughout their whole length, butbecome more frequent at the farther end, which is closed. The generaldirection of the holes is upwards, except some few in the bottom, to keep thepipe clear of condensed water. The case being… … a small siphon, about 3 in. or 4 in. deep, as shown in fig. 34. A steam-pipeof 1 in. diameter is sufficient for a case of 50 ft. in length; and, if properattention be paid to the dimensions and distance of the holes, which, in thisinstance, need not be above one sixth closer at the farther end than…
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