. The elements of geology, for popular use : containing a description of the geological formations and mineral resources of the United States. Geology; Geology. COAL MEASURES. 4 6: 6 6: 10 10^ 20 Section of Coal Hill, Pittsburg, Pa. Fig. 47. ^ 1. Reddish brown argillaceous earth. 2. Sandstone—slaty, fine-grained, ash-coloured. y//2 3. Shale—dark brown, carbona- m ceous, slaty. ;;-::vl 4. Clay—dark-coloured, carbona- ceous. 5. Coal — bituminous; supplies the manufactories of Pitts- burg". V 6. Clay—dark, Please note that these images are extracted from scanned page images that may
. The elements of geology, for popular use : containing a description of the geological formations and mineral resources of the United States. Geology; Geology. COAL MEASURES. 4 6: 6 6: 10 10^ 20 Section of Coal Hill, Pittsburg, Pa. Fig. 47. ^ 1. Reddish brown argillaceous earth. 2. Sandstone—slaty, fine-grained, ash-coloured. y//2 3. Shale—dark brown, carbona- m ceous, slaty. ;;-::vl 4. Clay—dark-coloured, carbona- ceous. 5. Coal — bituminous; supplies the manufactories of Pitts- burg". V 6. Clay—dark, Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Lee, Charles A. (Charles Alfred), 1801-1872. New-York : Harper & Brothers
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectgeology, bookyear1846
