(1789–1874). Scots engineer. He assisted Robert Stephenson in the design of the bridges over the Menai Straits and at Conway, describing his contributions in An Account of the Construction of the Britannia and Conway Tubular Bridges, with a Complete History of their Progress (1849). His numerous papers and books on various practical matters concerned with iron construction contributed to advances in engineering in the Victorian period.
From A Dictionary of Architecture and Landscape Architecture in Oxford Reference.