Thomas Jefferson Papers
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Enclosure: Alden Partridge’s Table of Altitudes of the Blue Ridge and Allegheny Mountains, [by 5 November 1810]

Enclosure

Alden Partridge’s Table of Altitudes of the Blue Ridge and Allegheny Mountains

[by 5 Nov. 1810]

Altitudes of the Blue Ridge & Alleghany Mountains, in feet above the level of tide water, in virginia, calculated from Barometrical1 Observation, by Genl Jonathan Williams. (corrected).

1. The Highest point of the Blue Ridge, near Rock fish Gap 1908.
2. The foot of the Blue Ridge, on the western side  895
3. The summit of the first mountain, near the warm springs 2018.
4. The summit of the second mountain near the warm springs 2380
5 The summit of the Alleghany Ridge, about six miles west of the Sweet Springs 2988.
The foregoing Altitudes as published in the 4th Volume of the American Philosophical Transactions.
1. The Highest point of the Blue Ridge near Rock fish Gap 1822.
2. The foot of the Blue Ridge on the western Side  863.
3. The summit of the first mountain near the warm Springs 1898.
4. The summit of the second mountain near the warm Springs 2247.
5. The summit of the Alleghany Ridge, about six miles west of the Sweet Springs 2760.

MS (DLC: TJ Papers, 193:34414); in an unidentified hand; undated.

Partridge had communicated the corrected altitudes to Jonathan Williams, who included them in a paper read at a meeting of the United States Military Philosophical Society on 5 Nov. 1810 (American Medical and Philosophical Register, 2d ed., 1 [1814]: 337; Poor, Jefferson’s Library, 5 [no. 190]). Williams published the figures from the second table in APS description begins American Philosophical Society description ends , Transactions 4 (1799): 219–20.

1. Manuscript: “Baronometrical.”

Index Entries

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  • physics; barometric calculation of altitude search
  • United States Military Philosophical Society; papers communicated to search
  • Williams, Jonathan; and altitude calculations search

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Source Project
Jefferson Papers
Title
Enclosure: Alden Partridge’s Table of Altitudes of the Blue Ridge and Allegheny Mountains, [by 5 November 1810]
Author
Partridge, Alden
Date
23 November 1815

Reference

Cite as
“Enclosure: Alden Partridge’s Table of Altitudes of the Blue Ridge and Allegheny Mountains, [by 5 November 1810],” Founders Online, National Archives, https://founders.archives.gov/documents/Jefferson/03-09-02-0130-0003. [Original source: The Papers of Thomas Jefferson, Retirement Series, vol. 9, September 1815 to April 1816, ed. J. Jefferson Looney. Princeton: Princeton University Press, 2012, pp. 193–194.]