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| Picture No | 10096466 |
| Date | 19th century |
| Description | Stratification Diagrams |
| Details |
Two diagrams to explain stratification: the books represent the different stratas in a depth of about 5 miles; the hand indicates depth of the coal strata
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| Source | Unattributed engraving |
| Credit | Mary Evans Picture Library |
| Restrictions |
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