PETERS, Edward Dyer, metallurgist, born in Dorchester, Massachusetts, 1 June, 1849. He was educated at the Freiberg mining-school, Saxony, in 1869, and has since devoted himself to copper-smelting. In 1870 he was appointed territorial assayer of Colorado, which office he held for two years, and after filling various other places he returned to Massachusetts, and in 1877 was graduated at Harvard medical school. Continuing his metallurgical practice, he held the superintendency of the Orford sulphur and copper company in 1880-'2, and of the Parrot silver and copper company in 1884-'5. Mr. Peters is a member of the American institute of mining engineers and of other scientific societies. In addition to various professional papers, he has published "Modern American Methods of Copper Smelting" (New York, 188%