| RefNo | MS/257/1/196 |
| AltRefNo | Sa.196 |
| Previous numbers | ES1/32/196 |
| Level | Item |
| Title | Letter from John Theophilus Boileau, Simla to Edward Sabine |
| Date | 10 August 1842 |
| Description | Refers to Lieutenant [Charles James Buchanan] Riddell’s ‘powerful assistance’. Boileau discusses the coefficients and arc value in determining the disturbances in regard to the total values of declination and intensity. Refers to observations taken at Simla. Discussion regarding Dr [Humphrey] Lloyd, the vertical force magnetometer, and diurnal changes of the vertical force. Refers to ‘curves of disturbances’. Boileau remarks on the horizontal force reading telescope. Refers to the Committee of Physics and Meteorology and the Council of the Royal Society and instruments. Discussion regarding the ‘relative change in the magnetic moment of the bar’. |
| Extent | 8p |
| Format | Manuscript |
| PhysicalDescription | Ink on paper |
| AccessStatus | Open |
Fellows associated with this archive
| Code | PersonName | Dates |
| NA5415 | Boileau; John Theophilus (1805 - 1886) | 1805 - 1886 |
| NA8279 | Sabine; Sir; Edward (1788 - 1883) | 1788 - 1883 |