Letter of Secretary of the Treasury, communicating a report by the Superintendent of the Coast survey
Subtitle: on an application of the galvanic circuit to an astronomical clock and telegraph register in determining local differences of longitude, and in astronomical observations generally, January 6, 1849
Series: Thirtieth Congress - Second Session. Ex. Doc -- No. 21; Ex. doc. (United States. Congress. House) -- 30th Congress, 2nd session, no. 21; Harvard College Library pamphlet digitization program
Publisher: publisher not identified
Published: 1849
Place of publication: Washington D.C.
Language: eng
Number of pages: 13
Subjects: Geodetic astronomy; Astronomical clocks; Telegraph; Equipment and supplies; Surveying; Instruments
Notes: Caption title.

At head of title: Thirtieth Congress - Second Session. Ex. Doc. No. 21. House of Representatives.

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