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 407
better than gravel would have done, but, being on a steep slope,it is not liable to be washed away, as that material would have been,by every shower of rain. The walk is formed by flat laminae ofthe sandstone, from six inches to a foot in thickness, not veryeven on the surface, and joined together… … forms, like the lava pavements in Portici, and other towns inItaly. The stones rise from 3 in. to 9 in. above the surface of thegrass; the width averages from 4 ft. to 5 ft.; but sometimes, wherevery large stones occur, the walk is double that height. Sometimeswe are inclined to think that, if this…