Paper, 'On the effect of the pressure of the atmosphere on the mean level of the ocean' by Captain Sir James Clark Ross 24 manuscript pages and one plate showing the daily mean level of the ocean and mean height of the barometer. Subject: Meteorology / Hydrography Published in Philosophical Transactions as 'On the effect of the pressure of the atmosphere on the mean level of the ocean'. Written by Ross at Aston Abbotts House, Aylesbury [Buckinghamshire]. Received and read by the Royal Society on 15 June 1854. Abstract published in Abstracts of the Papers Printed in the Philosophical Transactions of the Royal Society of London [later Proceedings of the Royal Society of London], Volume 7, 1856. [1854]