LOCK, C. G. Warnford (SINGAPORE), F.G.S., M.I.M.M.; Consulting Mining Engineer. Engaged in Mining in Iceland, Austria, Hungary, Asia Minor, British Columbia, S. Dakota, U.S.A., California, New South Wale;, Rhodesia and Malay Peninsula. Publications:" The Home of the Eddas"; "Practical Gold Mining"; "Gold Milling"; " The Miners' Pocket Book "; numerous monographs in Scientific Societies transactions and technical press. Address: Singapore, Straits Settlements; 93, Pitt St., Sydney, N.S.W., Australia; c/o Charleton, Dickinson and Co. 353, Mansion House Chambers, London, E.C.