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| Field name | Value |
|---|---|
| Collection Reference Number | GLC00722.07 |
| From Archive Folder | William McBlair collection |
| Title | Rule for ascertaining the longitude by Chro. at Sunset |
| Date | 1857 |
| Author | Barnes, Edward A. (fl. 1857) |
| Document Type | Military document |
| Content Description | Details the procedure for obtaining longitude at sea based on the time of the sunset and latitude. |
| Subjects | Maritime Science and Technology |
| People | Barnes, Edward A. (fl. 1857) |
| Theme | Naval & Maritime; Science, Technology, Invention |
| Sub-collection | The Gilder Lehrman Collection, 1493-1859 |
| Copyright | The Gilder Lehrman Institute of American History |
| Module | Settlement, Commerce, Revolution and Reform: 1493-1859 |