Referee's report by John Joly, on a paper 'The determination of specific heats, especially at low temperatures' by H E Schmitz Sectional Committee: Physics and Chemistry Recommended for publication in Philosophical Transactions. Notes the limits of temperature should be given in each case in the detailed statement of his experiments. The illustrations given by the author are necessary. The author's work is valuable and he appears to have taken every pains to arrive at good results and has covered a good deal of ground. Schmitz does not appear to be aware that the method of weighing an ice-packet is old and was described briefly by Joly in 'Nature', 1895, volume 52, page 80, and was subsequently independently invented and used by Dewar. [Published in Proceedings of the Royal Society, 1903]. Endorsed on verso as received 23 March 1903. March 1903