WALTER WILLIAM ROUSE BALL was born in London on August 14, 1850, and was educated at University College School and afterwards at Uni versity College. He was primarily a mathematician, but his studies were not confined to one subject, for besides gaming the gold medal for mathematics in the M.A. examination of the University of London, he ob tained a first-class in mental and moral science in the final honours examination for the B.A. degree in 1869. He commenced residence at Trinity College, Cambridge, in 1870 and graduated as second wrangler and first Smith's prizeman in 1874. He was called to the bar, and although he did not practise, he published a “Student's Guide to the Bar,” which ran through many editions. He was elected a fellow of Trinity College in 1875, anc' was a mathematical lecturer at the College from 1878 until 1905. He also held the post of tutor from 1893 until 1905, an office for which he was admirably qualified by his methodical habits, his sense of justice, and his wide sympathies.
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