Native Americans in November 1767. The Mason-Dixon line later became the focal point for the American Civil War (1861-1865).

An anecdote recounts Jeremiah Dixon's views:

Dixon and Mason also made a number of gravity measurements with the same instrument that Dixon had used with Maskelyne in 1761. Before returning to England in 1768, they were both admitted to the American Society for Promoting Useful Knowledge, in Philadelphia.

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