Produced by Sharon Joiner, monkeyclogs and the Online Distributed Proofreading Team at http://www.pgdp.net (This file was produced from images generously made available by The Internet Archive/American Libraries.) =MANUAL OF ASSAYING GOLD, SILVER, COPPER, AND LEAD ORES.= By WALTER LEE BROWN, B.Sc. Revised, Corrected, and considerably Enlarged, with a chapter on the Assaying of Fuel, &c. By A. B. GRIFFITHS, Ph.D., F.R.S. (Edin.), F.C.S. 7s. 6d.…
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