| Description | Tables of daily observations made at Trivandrum [Thiruvananthapuram], Kerala, generally at two hourly intervals, commencing with: the declination magnetometer; horizontal force magnetometer and its thermometer; vertical force magnetometer and its thermometer. With readings from: an uncorrected barometer; its attached thermometer; dry and wet thermometers. These are followed by: detailed observations of computed temperature of dew point and tension of vapour [on unused tables for electrometer observations]; maximum and minimum temperature, terrestrial radiation and Moon's age. The observations conclude with corrected barometer readings, and columns recording the proportion of sky clouded, mean direction and force of wind by Lind's gauge; and the daily amount of rainfall. Columns for temperature of dew point and elasticity of vapour [p.12] are left blank, the former with a pencilled note: 'Not observed from want of aether'. Similarly, solar radiation is not recorded, with the note: 'Not observed - Mr. Newman's Thermometer for the purpose being perfectly useless'. The usual daily triple observations of the magnetometers [p.14] are also blank, a note explaining that: 'These are included in the "Antarctic" daily term'.
Headed 'Abstract of daily Observations...'. With some explanatory annotations on instrument performance. |