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 27
y any thing of the bad orgood qualities of the poplar, but merely to consider it as a tallconical mass of foliage, which becomes of great import, whencontrasted with the more useful and valuable round headedtrees. First then, it is a known pictorial rule, that all horizontallines should be balanced… … bridge are balanced and supported by the upright poplars, butlengthened and pleasing reflections are produced, which break-ing the horizontal gleams on the water, continue a mass oflines intersecting each other at right angles, than which effect,nothing can be more simply grand and classical. This…
