Referee's report by William Thomson, Lord Kelvin, on a paper 'On the changes which take place in the deviations the standard compass in the iron armour-plated, iron, and composite-built ships of the Royal Navy, on a considerable change of magnetic latitude' by Ettrick William Creak Recommended for publication in Philosophical Transactions. It contains 'most interesting and useful information' and it forms a 'valuable addition' to the subject. Subject: Physics [Published in Philosophical Transactions, 1884]. 11 April 1883