| Description | Hourly observations made at Trivandrum [Thiruvananthapuram], Kerala, of the declination, horizontal force, and vertical force magnetometers, commencing from 10.00p.m. on 23 December [Gottingen Mean Time] and continuing to 9.00p.m. on 24 December 1841. With readings of the barometer and attached thermometer, dry and wet bulb thermometer, and calculated dew point and tension of vapour [in the printed column for electrometer readings] over the same period. There are general remarks on the state of the weather.
Headed 'Abstract of Term-day Observations'. Inscribed in pencil [p.4]: 'December 1841'. |