Abstract

<i>Cambrian Faunas of China</i>. Charles D. Walcott<i>The Petroleum Industry of Southeastern Illinois</i>. W. S. Blatchley<i>The Composition and Character of Illinois Coals</i>. S. W. Parr<i>The Distribution of the Coal Beds of the State</i>. A. Bement<i>Tests of Illinois Coals under Steam Boilers</i>. L. P. Breckenridge<i>Geology and Mineral Resources of Mississippi</i>. A. F. Crider<i>Clays: Their Occurrence, Properties and Uses, with Especial Reference to

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