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

Allegheny Mountains; altitude of search
altitude; barometers used to calculate search
American Philosophical Society; Transactions search
barometers; altitude calculated with search
Blue Ridge Mountains; altitude of search
Partridge, Alden; and calculation of altitude search
physics; barometric calculation of altitude search
United States Military Philosophical Society; papers communicated to search
Williams, Jonathan; and altitude calculations search

You Are Looking At

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.]