Lyon Playfair in 1885 when President of the British Association for the Advancement of Science. Scottish chemist and politician. He studied chemistry at Glasgow under Thomas Graham, and under Liebig at Giessen. Professor chemistry , he discovered the nitroprusside class of salts. Chemist to the Geological Survey, 1846. Society 1848. organisation of the Liberal MP for the universities of Glasgow and Edinburgh 1868-1885. Secretary of State for Science and Art 1855. Deputy Speaker of the House of Commons 1880-1883. (London 1877). From "The Illustrated London News" (London, 12 September 1885).

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