| Description | Daily observations on the steamship Earl of Hardwicke, at sea, commencing on 25 January 1839, and presumably on the return leg of its voyage, from Calcutta [Kolkata], India, to Portsmouth, England. Columns give information on: day and date of observations; latitude and longitude [pp.4-5 the entry for 12 February notes 'Cape of Good Hope']; barometer and sympiesometer readings at 9.30am, noon, 3.00pm, 4.30pm and 10.30pm; with air and sea temperature readings at 8.00am and general remarks on weather, including wind.
Headed [p.1]: 'Meteorological obsns. made at sea on board the Earl of Hardwicke HBMS by Captn. Henning. Communicated from Captn. H. to the Phys. & Met. Comm. RS. by Sir J. Herschel'. Signed [p.11] by Alexander Henning. |