Copy letter from an unknown correspondent, to the British Thomson-Houston Company Limited, 83 Cannon Street, E.C. In reply to his correspondent's note of the previous day, the paper by Professor [James Alfred] Ewing and Mr [Walter] Rosenhain read on 16 March, 'Experiments in Micro-Metallurgy' was published in the 'proceedings of the Royal Society', number 414 and can be obtained from Messrs Harrison & Sons, 46 St Martin's Lane. The Bakerian Lecture, 'The Crystalline Structure of Metals' will not be published for a month yet, when it will appear as a number of the 'Philosophical Transactions [of the Royal Society]', also available from the Messrs. 14 October 1899