Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to [Leslie James] Harris Esq.; School of Biochemistry, University of Cambridge 'In reply to your letter of yesterday, your paper ['The combination of proteins, amino-acids, etc., with acids and alkalis, and their combining weights as determined by physico-chemical measurements.'?] was duly communicated by Professor Hopkins and is now under consideration.' 14 October 1924