Download or read book A Preliminary Descriptive Catalogue of the Systematic Collections in Economic Geology and Metallurgy in the United States National Museum written by Frederic Perkins Dewey and published by . This book was released on 1891 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt: The systematic collections in economic geology and metallurgy are designed to show the actual occurrence of each metal and the processes used in their extraction; to these are added illustrations of the occurrences of non-metallic ores and their utilization. The systematic collections should be carefully distinguished from the geographical collection.