| Description | Daily readings of vibrations and deflections using a [bar?] magnetometers, 'C4' and 'C25'. Columns for number of vibrations, time, difference, difference of 50 vibrations, bifilar, and torsion in an upper table, designated 'vibrations of C4'; columns for deflection, reading, mean and difference, bifilar and torsion in a lower table, designated 'deflections of C25'. With a monthly summary of results for July [p.47] and for September [p.49].
The notes are paper bound, the front cover inscribed: 'Observations made for Intensity during the Months of August and September 1846'. The rear cover is similarly inscribed. Front and rear inner covers are covered with sketches of various subjects, including instruments and dogs. |