HUGHES, DAVID EDWARD (1831-190o), Anglo American electrician, was born on May 16, 1831, in London, but the earlier part of his life was spent in America, whither his parents emigrated when he was about seven years old. In 185o he became professor of music at the college of Bardstown, Kentucky, and soon afterwards teacher of natural philosophy at the same place, but resigned in 1854. In 1855 he took out a patent in the United States for his type-printing telegraph instrument. Its success was immediate and in 1867 Hughes brought it over to Europe. In the succeeding ten years it came into extensive use all over Europe, gaining for its inventor numerous honours and prizes. Hughes played an important part in the development of telephony; his microphone was the forerunner of the various forms of carbon transmitter in general use. Continuing his experiments with his microphonic joints, Hughes discovered the phenomena on which depends the action of the so-called "coherers" used in wireless telegraphy. Hughes, who is also known for his invention of the induction balance and for his contributions to the theory of magnetism, died in London on Jan. 22, 1900.