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Professor David Alexander Louis (c1857-1915)
1915 Obituary 
DAVID ALEXANDER LOUIS, who, although not a member, was for many years intimately connected with the Institute, died on March 25 after a long illness. He was born in 1857, and his scientific training was acquired at the Royal School of Mines. He contributed a number of papers to the Transactions of the Chemical Society, the Philosophical Transactions of the Royal Society and to the Proceedings of the Institute of Mining and Metallurgy, the Petroleum Institute, and the Iron and Steel Institute, and enjoyed the warm esteem of those who knew him as a mining engineer of wide experience.
Among the offices that he filled were Professor of Mining at the York shire College, Leeds - now the University of Leeds, and Lecturer on Mining at the Crystal Palace School of Practical Engineering. In 1910 he acted as Honorary Secretary of the Metallurgical Section of the Seventh International Congress of Applied Chemistry, and he was an active member of the International Association of Journalists, in connection with which he acted on various reception committees from time to time. He had a wide connection with the technical press, and took great interest in the meetings of the technical societies.
He was an almost invariable attendant at the meetings of the Institute, both at home and abroad.