ABSTRACT A QUANTITY of new material has been added to this handbook since the last edition was published in 1910. Some of it, particularly those portions referring to the description of ore

deposits and ore-testing, has been drawn from the bulletins of the United States Geological Survey and the Bureau of Mines, and various publications of schools of mines and the technical

Press. Other additions which have been made are lists of outfits suitable for prospecting, fresh field tests, notes on sampling, and a new chapter dealing with alloy minerals. In face of the

claim that the new edition is thoroughly up-to-date, it is curious to find “chloride of formyl” given in the appendix as the chemical name for chloroform. A glossary of more than twenty

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CITE THIS ARTICLE _Prospector's Field-book and Guide_ . _Nature_ 106, 660 (1921). https://doi.org/10.1038/106660b0 Download citation * Issue Date: 20 January 1921 * DOI:

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