“ His general conclusion was that roads should be constructed of broken stone (see Roads) . In 1815, having been appointed surveyor-general of the Bristol roads, he was able to put his theories into practice. In 1819 he published a Practical Essay on the Scientific Repair and Preservation of Roads, followed, in 1820, by the Present State of Road-making. As the result of a parliamentary inquiry in 1823 into the whole question of road-making, his views were adopted by the public authorities, and in 1827 he was appointed general surveyor of roads. ”