| Description | Tables of magnetic variations and compative intensities. These include [p.1-2] azimuth sightings at Sarawak, 7 November and 5 December 1842; at Santon diamond mines, 11 November 1842 [p.3]; intensity comparisons between Sarawak and Singapore, 'with the large magnets'; comparative horizontal intensity between Sarawak and Singapore, with various magnets, [p.4-5]; horizontal intensity from vibrations of Hamsteen's needles [pp.5-6]; observations for magnetic variation taken at the mouth of the Sepang River, 23 October 1842 [p.7]; magnetic variation observations at the Santo diamond mines, 10-11 November 1842.
Signed [p.6]: 'C M Elliot Lt. Engrs'. |