| Description | Hourly observations made at the Royal Observatory [Tarewali Kothi] at Lucknow, Uttar Pradesh, of the declination and horizontal force magnetometers, commencing from 10.00p.m. on 21 December [Gottingen Mean Time] and continuing to 9.00p.m. on 22 December 1842. With readings of the barometer [height and temperature], dry and wet thermometer, and state of the weather, with wind direction. A column for electrometer readings is blank.
Headed 'Abstract of Term-day Observations...'. Inscribed [p.4]: 'Lucknow Dec - 1842 Magnetic'. |