Description | Curves showing: declination and horizontal force magnetometer readings [p.1]; vertical force magnetometer readings [p.2]; standard, wet and dry bulb thermometer readings [p.3]; uncorrected barometer readings [p.4]; general weather remarks [p.3].
Headed [p.1]: 'Mean Hourly Curves of the Borneo observations, taken during part of the Months of Octr. Novr. & Decr. 1842'. Inscribed lower right [p.1]: Magnetic Observatory at Singapore'. Signed [p.4]: 'C M Elliot Lt. Engrs'. |