De la Rue, WARREN,

De la Rue, WARREN, an eminent electrician, was born in the island of Guernsey, January 18, 1815. He was educated at Paris, and early entered his father's business—the manufacture of paper-ware—for which his inventive ability and scientific knowledge enabled him to devise many new machines and processes. He took an active part in the Exhibitions of 1851 and 1862; was a member of the International Electrical Congress at Paris in 1861; and had been president of the Royal Astronomical Society, of the Chemical Society, and the London Institution. In 1878 he succeeded Spottiswoode as secretary of the Royal Institution, and in 1880 was elected a corresponding member of the French Académie des Sciences in the department of astronomy. His scientific work, done at his observatory at Cranford and at his private physical labor- atory, is of the highest value in the departments of astronomical photography and electricity, and its results have been communicated from time to time to the Royal Society and the French Académie des Sciences. He died 19th April 1889.