SILVER AND GOLD:

AN ACCOUNT OF

THE MINING AND METALLURGICAL INDUSTRY
OF THE UNITED STATES,

WITH REFERENCE CHIEFLY TO THE PRECIOUS METALS.

BY

ROSSITER W. RAYMOND, PH. D.,

COMMISSIONER OF MINING STATISTICS; PRESIDENT OF THE AMERICAN INSTITUTE OF MINING ENGINEERS;
EDITOR OF THE ENGINEERING AND MINING JOURNAL; AUTHOR OF MINES OF THE WEST,"
"AMERICAN MINES AND MINING," " MINES, MILLS, AND FURNACES,"

ETC., ETC.

NEW YORK:

J. B. FORD AND COMPANY.

1873.

TN23 だ

Entered according to Act of Congress, in the year 1873,
BY J. B. FORD AND COMPANY,

in the Office of the Librarian of Congress, at Washington.

UNIVERSITY PRESS: WELCH, BIGELOW, & Co.

CAMBRIDGE.

Chapter X. The smelting of argentiferous lead ores in Nevada, Utah, and

Montana.....

379

XI. Economical results in the treatment of gold and silver ores by

fusion ....

410

XII. The amalgamation of gold ores

422

XIII. The amalgamation of silver ores in pans with the aid of chem-

icals......

427

XIV. The treatment of ores of native silver in Chihuahua..

434

XV. The reduction of silver ores in Chili..

439

XVI. The metallurgical value of the lignites of the West..

XVII. The metallurgy of native sulphur.....

441

447