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 161
e is employed, the pipes may rise uniformlyabout 1 in. in 20 ft. from a and ^ to c; on which, being thus thehighest point of the pipes, an air-cock is placed. But, if 4-inchpipes be employed, it is better that a should be the highest point,and the air-cock placed there; and that the pipes should… … invented hy John Rogers^ Jun., Esq. 135
