Referee's report by John Beresford Leathes, on a paper 'The titration of amino- and carboxyl-groups in amino-acids, polypeptides, etc. Parts I—III.—Investigations with aqueous solutions' by Leslie J Harris Sectional Committee: Physiology Recommended for publication in the 'Philosophical Transactions of the Royal Society'. Suggests the paper could be published 'with the help and through the experience of the Editors of th Journal of the Chemical Society, much more economically in that journal, which exists for the presentation of such matter'. [Published in the 'Proceedings of the Royal Society of London' B, 1923] Endorsed on verso as received 27 August 1923. 25 August 1923