| Description | Tables of daily observations made at Madras [Chennai], 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: unused tables for electrometer observations [pp.10-11]; temperature of dew point, elasticity of vapour, maximum and minimum temperature, solar and terrestrial radiation and Moon's age; corrected barometer; and an abstract of daily triple observations of the magnetometers.
Readings using the declination magnetometer were not made for the period 29-30 October. The note of explanation states 'Thread broken'.
Headed 'Abstract of daily Observations...'. Inscribed [p.16] 'October'. Signed on each page: 'S.O.E. Ludlow Supt'. |