English engineer, born at London in 1839; educated at Harrow, from which he went to Balliol College, Oxford, where he took a first-class in mathematics and natural science. For three years (1862–65) he was a pupil of Sir John Hawkshaw, and afterward his assistant. He established himself in business in London in 1875, and became engaged chiefly in hydraulic and maritime works. He was an expert witness before the Lords’ committee on canals, rivers, water-supply, etc. He was appointed professor of engineering in University College, London; associate of the Institution of Civil Engineers in 1865, and member in 1871; and vice-president of the permanent committee of the International Maritime Congress of Paris. He received a Telford medal, three Telford premiums, and the Manly premium. He is the author of Rivers and Canals (1882); Harbors and Docks: Their Physical Features, History, Construction, Equipment and Maintenance (1885); Achievements in Engineering (1891); and of the articles River Engineering and Water-Supply in this Encyclopædia; besides important papers published in the Proceedings of the Institution of Civil Engineers, and read before the Royal Society.