Copy letter from Herbert Rix, to Max Baker, Editor, "Arms Explosives", Effingham House, Arundel Street, Strand, W.C. The paper Baker means appears to be published in the 'Proceedings [of the Royal Society]' number 337. This is rather to old for review now. The greater part of the edition is already in circulation. It can be obtained from Messrs Harrison & Sons, 45 St Martin's Lane. 14 November 1894