Referee's report by Edward Albert Sharpey-Schafer, on a paper 'The rôle of the various elements in the development and regeneration of bone' by William Macewen Sectional Committee: Physiology Not recommended for publication in the 'Philosophical Transactions of the Royal Society'. Could be published in the Proceedings if completed. Works referenced in the paper are 'ancient'. Suggests the author should add a short summary of contents. [Published in the Philosophical Transactions of the Royal Society] Endorsed on verso as received 13 February 1907. [February 1907]