| Description | Table of hourly observations of a bifilar magnetometer (uncorrected) measuring horizontal force, commencing at noon of each day (Gottingen mean time); including sums, means, temperature corrections and corrected means. With comparable hourly observations of the thermometer of the bifilar magnetometer, with sums and means.
Inscribed [pp.2 and 4]: 'Madras Hourly Obs. June to Dec. 1842'. |