Last Updated:2022/12/24

Between the two extremes, the line of coast passes through a very great depression of the strata, designated locally a swelly, and constituting that feature generally met with in coal fields which is properly termed a basin. This greatest depression takes place near the town of Sunderland, where the coal beds are at a depth of 300 fathoms, or 1,800 feet, below the level of the sea, […]

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