HENRY FREDERICK WILLIAM who died on July 15, was born in Aberdeen on September 3, 1865, but he was not of Scottish descent nor had he any Scotch accent. As a boy he was weakly, and in consequence his school life suffered many interruptions. At the age of sixteen years he was apprenticed to John Stewart and Son, marine engineers, of Blackwall, and it was during this period that his mathematical ability began to be evident. On the completion of his indentures he entered University College, London, where he attended the lectures of Prof. M. Hill and won a bursary to St. John's College, Cambridge. Three years later he emerged as sixteenth in Part I of the Tripos, and although in Part II ill-health again hampered him, he succeeded in securing a high place in the second class.