Magnetic and meteorological observations at the Madras Magnetic Observatory, India, by Samuel Owen Edgar Ludlow Hourly observations made at Madras [Chennai] of the declination, horizontal force, and vertical force magnetometers, commencing from 10.00p.m. on 26 February [Gottingen Mean Time] and continuing to 9.00p.m. on 27 February 1841. With uncorrected readings of the barometer and attached thermometer, and dry and wet bulb thermometer over the same period. With wind direction [in a column for electrometer readings], and general remarks on the state of the weather. Headed 'Abstract of Term-day Observations'. Signed [p.3]: 'S.O.E. Ludlow Supt. Madras Magl. Obsy.'. 26-27 February 1841