PROSPECTING THE GROUND.

{1}

How and Where to Find Them.

A KEY

FOR THE READY DETERMINATION OF ALL THE USEFUL
MINERALS WITHIN THE UNITED STATES.

BY JAMES ORTON, A.M.,

Late Professor of Natural History in Vassar College, N. Y.; Cor.
Mem. of the Academy of Natural Sciences, Philadelphia,
and of the Lyceum of Natural History, New York;
Author of “The Andes and the Amazon,” etc.

A NEW EDITION WITH ADDITIONS.
———
ILLUSTRATED.
———
PHILADELPHIA:
HENRY CAREY BAIRD & CO.,

INDUSTRIAL PUBLISHERS, BOOKSELLERS AND IMPORTERS,

810 Walnut Street.

1881.

{2}

...