SCHUSTER, ARTHUR, a British scientist, born at Frankfort-on-the-Main, in 1851. He was educated at Frankfort-on-the-Main, Geneva, Owens College, Manchester, and Heidelberg. He was chief of the “Eclipse” expedition to Siam, 1875. In 1892 he was president of Section A of the British Association and later became president of the Manchester Literary and Philosophical Society, and of the Physical Society, London. He received the Royal medal of the Royal Society in 1893 and became president of the British Association in 1915. His works include “Theory of Optics”; “Progress of Physics”; “Britain's Heritage of Science.”