Meteorological observations kept on board the ship Earl of Hardwicke, by Alexander Henning. Daily observations on the steamship Earl of Hardwicke, departing from Spithead, England, on 2 August 1838. The ship was sailing for Calcutta [Kolkata], India. Columns give information on: day and date of observations; latitude and longitude; 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, and 'Register of Barometer & Sympiesometer'. Headed [p.1]: 'Meteorological obsns. made at sea on board the Earl of Hardwicke HBMS by Captn. Henning. Communicated to the Phys. & Met. Committee of RS. by Sir J. Herschel from Capetown'. 2 August 1838-10 November 1838