WILLIAM, one of the superintendents of the grand trigonometrical survey of England and Wales, was born at Plymouth in 1762. He was one of a race of gifted Muggletonians. His grandfather, the Rev. Zachariah Mudge, was an intimate friend of Dr Johnson, and the author of a well-known volume of sermons; his uncle, Thomas Mudge, was pronounced by the scientific men of his day to be "one of the first watchmakers which this country has produced;" and his father, Dr John Mudge, is known in the history of science as the improver of the reflecting telescope. William Mudge was trained for the army in the Royal Military Academy at Woolwich, and served abroad as a lieutenant in the Royal Artillery. It was after his return to England that he was appointed to assist in the trigonometrical survey under the superintendence of Lieutenant-Colonel Edward Williams, R.A. The rank of captain was then conferred upon him. In course of time he became superintendent, and was raised to the successive dignities of major, lieutenant-colonel, and major-general. The results of his surveys were published from time to time in the Philosophical Transactions, and secured for him much distinction. He was elected a correspondent of the Institute of France, and a fellow of the Academy of Sciences at Copenhagen and of the Society of Antiquaries at London. During the latter part of his life he also held the office of lieutenant-governor of the Royal Military Academy at Woolwich. He died at London in April 1821.