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A Scientific and Practical Treatise for the Use of Engineers and Others Engaged in Mining, Quarrying, Tunneling, &C., and for Mining and Engineering..

With Five Colored Illustrations. a Popular and Scientific View of Their Origin, Geological Position and Age; Also Their Chemical Character and..

Together With a Brief Description of the Country, and Incidents of Travel in the Bush

Centennial Address of Abram S. Hewitt, President Elect of the American Institute of Mining Engineers. Philadelphia, June 20, 1876