Description | Table of changes in magnetic intensity [p.1], with an explanation of the data, including mean figures for readings of thermometers and a standard barometer.
Headed [p.1]: 'Changes in the Mean Hourly values of the Horixontal & Vertical Intensity during the months of Octobr, & Novr. 1842. Sarawak Borneo'. Signed [p.3]: 'C M Elliot Lt. Engr.'. |