Referee's report by Humphrey Lloyd, on a 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 George Biddell Airy Referee describes paper as being 'a very interesting analysis of the laws of the phenomena of compass deviation'. The paper is 'responsive as an equal to that of the same author, published in Philosophical Transactions 1939'. [doi:10.1098/rstl.1839.0014] Referee does not consider themselves suitable to offer an opinion due to having 'not read any of the other investigations dealing with the same problem'. Subject: Mathematics [Published in the Philosophical Transactions, 1856] 16 July 1855