Born on 21 September 1891 the son of J T Riddiough of Bradford, he was educated at Bradford Grammar School and King's College, Cambridge, where he was an exhibitioner. Having obtained second-class honours in the Natural Sciences Tripos in 1912 and in the Mathematical Tripos in 1913, he became a mast

Horace Braithwaite Bullen graduated with first class honours in the Natural Science Tripos at Cambridge in 1913. He did his medical training at Cambridge and at St Bartholomew's Hospital where he became house surgeon. He won the Walsham Prize in 1917 and the Bentley Prize in 1918. He was temporary S