Electro-magnetic telegraph -- astronomical observations. Letter from the Secretary of the Treasury, transmitting a report of the Superintendent of the Coast Survey, relative to local differences of longitude and astronomical observations generally. January 6, 1849. Laid upon the table, and ordered to be printed, together with 1,000 extra copies, 250 of which for the Superintendent of the Coast Survey
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1 online resource (13 pages) - Publisher: [Washington, D.C.] : [publisher not identified], 1849.
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| General Note: | Batch processed record: Metadata reviewed, not verified. Some fields updated by batch processes. FDLP item number not assigned. |
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| Subject: | Astronomical clocks Astronomy Hydrographic surveying Longitude Scientific apparatus and instruments Telegraph Research |
| Genre: | Legislative materials. |
