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 193
ity. 2d, All other things being the same, the velocity will be increased inproportion to the square root of the depth of the boiler j therefore, in aboiler four times as deep, the velocity will be doubled. 3d, If there be sufficient service of pipe for the object required, a re-servoir is not… … 4th, If a boiler have sufficient surface to receive the effect of the fire,and the whole apparatus contains as much water as will convey the heatfrom the fire to the heating surface in the time corresponding to its velo-city, its capacity need not be further increased, except as a reservoir ofheat,…