Page:A Treatise on Geology, volume 2.djvu/363

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System considered, 111. Its composition, 111. Lamination in, 114. Stratification of, 115. Succession and thickness of, 117. Organic life discovered in, 118. Extent of, 119. Physical geography of, 120. Igneous rocks of, 121. General inferences drawn from the subject, 122.|1}}