A TREATISE ON ORE DEPOSITS J1Y J. ARTHUR PHILLIPS, F.R.S., V.P.G.S., F.C.S., M. INST. C.E., ANCIEN fcLfeVE DE l’^COLE DES MINES, PARIS ; AUTHOR or “ A MANUAL OF METALLURGY,” “THE MINING AND METALLURGY OF GOLD AND SILVER, WITH NUMEROUS ILLUSTRATIONS. IConbon: MACMILLAN AND CO. 1884. The Right of Translation and Reproduction is Reserved.