to John Cruger
President
of the Chamber of Commerce
Observations made at the Flag Bastion in Fort George in the City of New York, principally with the sector belonging to the Province of Pennsylvania, of six feet radius, by Messrs. David Rittenhouse and John Montresor, Engineers, October, 1769.
| Zenith Distance of Capella | |||||||
| October | 9th | 3h | 50′ | morn | 5° | 2′ | 0½″ |
| 10th | 3 | 46 | do | 5 | 1 | 59 | |
| Zenith Distance of Castor | |||||||
| October | 10th | 6h | 6′ | 8 | 19 | 51 | |
| 12th | 5 | 58 | 8 | 19 | 51 | ||
| === | === | === | |||||
| Declination of Capella | 45 | 44 | 14 | ||||
| Zenith distance of Capella Refraction | 5 | 2 | 5 | ||||
| Latitude | 40 | 42 | 9 | ||||
| === | === | === | |||||
| Declination of Castor | 32 | 22 | 7 | ||||
| Zenith distance of Castor | 8 | 19 | 51 | ||||
| Refraction | 0 | 0 | 9 | ||||
| Latitude | 40 | 42 | 7 | ||||
| === | === | === | |||||
The mean of the above observations ascertain the Latitude of Fort George in 40° 42′ 8″.
I am, with respect
Sir, Your most Humb. Servt.
John Montresor.
John Cruger Esq.