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DAVID RITTENHOUSE.
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engaged in fixing the boundary between those two States. The New York representatives relied entirely upon the Pennsylvanians for a supply of instruments, and there was no sector suitable for the purpose, at least in that part of America. Rittenhouse therefore made one, which was used in determining the line, and which, in the language of Ellicott, was most excellent. On the 2d of December, 1785, Congress appointed Rittenhouse, with John Ewing and Thomas Hutchins, a commission to run a line of jurisdiction between the States of New York and Massachusetts, which work was performed in 1787, and constituted, says Dr. Rush, his farewell peace-offering to the union and happiness of his country.

After Congress had determined upon the establishment of a mint, Rittenhouse was appointed its first director, April 14th, 1792, by President Washington. He was extremely reluctant to undertake the task, but his mechanical knowledge and ability seemed to make him especially fitted for the organization of an institution whose successful working depended upon the construction and proper use of delicate machinery, and at the urgent solicitation of both Jefferson and Hamilton he consented. When it had been running for three years, however, finding that he could be relieved from what he felt to be a burden, and that the pressing necessity for his services no longer existed, he resigned.

The absorption of so much of his time since the beginning of the Revolutionary war in the performance of public duties, important and honorable as were the offices he held, was not only a source of regret to himself, but seems to have been generally regarded in the light of a sacrifice. As early as 1778, Jefferson felt impelled to write to him: “I doubt not there are in your country many persons equal to the task of conducting government, but you