Paper, 'Discussion of the observed deviations of the compass in several ships, wood-built and iron-built: with a general table for facilitating the examination of compass-deviations' by G B [George Biddell] Airy Subject: Scientific Instruments Published in Philosophical Transactions as 'Discussion of the observed deviations of the compass in several ships, wood-built and iron-built : with a general table for facilitating the examination of compass deviations'. Written by Airy at the Royal Observatory, Greenwich. Received by the Royal Society on 14 September 1855. Read 22 November 1855. 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. 31 August 1855