
Language
en
Duration
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Publisher of text edition
Project Gutenberg
Credits
Produced by Paul Marshall and the Online Distributed Proofreading Team at http://www.pgdp.net (This file was produced from images generously made available by The Internet Archive)
Release date
2015-11-22
Rights
Public domain in the USA.

1859–1916
A pioneering American geologist, he helped map the mineral resources of the United States and wrote with the clear, practical style of a scientist used to explaining the land beneath people’s feet. His work bridges field exploration, public service, and the early study of economic geology.
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