Referee's report by John Allen Harker, on a paper 'The capacity for heat of metals at low temperatures' by Ernest Howard Griffiths and Ezer Griffiths Sectional Committee: Physics and Chemistry Recommended for publication in the 'Philosophical Transactions of the Royal Society'. Part I is an excellent continuation of a pervious series of similar papers. Is not adequately familiar with the subject to criticise Part II effectively, so asks that the report be seen as only applying to Part I. Suggests adding further explanation of the apparatus and experimental method. [Published in the Philosophical Transactions of the Royal Society, 1914] Endorsed on verso as received 20 June 1914. [June 1914]