EVANS, If. Sugden, Canadian chemist, born in London, England, in 1830. He was graduated at the School of pharmacy in 1848, and then removed to Liverpool, where he took charge of the laboratories of his father, a wholesale druggist. In 1849 he read before the London chemical society a paper on "Chromates of Copper," and was elected one of its fellows. He afterward investigated the adulteration of drugs and food, and for his microscopically labors in this connection was made a fellow of the Royal Microscopical Society. He was also, in 1869, president of the Pharmaceutical society of Great Britain. In 1.866 he entered the wholesale drug business in Montreal, Canada, but continued to live in England till 1877. He retired from active connection with the business in 1884, and became chief analyst for the Dominion government.