Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Mr George Harding, Bookseller; 64 Great Russell Street, W.C.1. 'In reply to your letter of December 10 - the paper by Dr [Edward Frankland] Armstrong on Studies on Enzyme Action, Part I, was published in the Journal of the Chemical Society, Vol. 83, 1903, p.1305.' 11 December 1924