His great work, Britannia Romana, or the Roman Antiquities of Britain (London, 1732), one of the scarcest and most valuable of its class, contains the result of patient labour.
(2) The Britannia and Conway bridges were built on staging on shore, lifted by pontoons, floated out to their position between the piers, and lastly lifted into place by hydraulic presses.
The manufacture of Britannia ware was begun in 1812.
He was associated with Sir William Fairbairn in an important series of experiments on cast iron, and his help was sought by Robert Stephenson in regard to the forms and dimensions of the tubes for the Britannia bridge.
The berg is crowned by three great granite boulders, known as the Paarl, Britannia and Gordon Rock.