Referee's report by William James Russell, on a paper 'On the action of heat on the absorption-spectra an chemical constitution of saline substances' by Walter Noel Hartley Not recommended for publication in the Proceedings of the Royal Society of London. Finds himself in a difficult position, as neither of his previous papers on the same subject have been referenced by the author. As such, feels unbiased in his opinions. Finds the paper long, without making any advance. Subject: Physics and Chemistry [Not published] Endorsed on verso as received 23 October 1899. 2 November 1899