Letter | Published:

“The Ores of Leadville”


MY attention has lately been drawn to a review in NATURE for April 17 of a work on “The Ores of Leadville and their Mode of Occurrence,” by Mr. L. D. Ricketts, from which one would be led to suppose that all the facts mentioned were due to original investigation on the part of the author. Your reviewer does not state that which is acknowledged by the author himself, namely, that much of his information was obtained from the Report of the U.S. Geological Survey by Mr. S. F. Emmons, contained in the Second Annual Report, published a year previously.

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