Referee's report by William Mitchinson Hicks, on a paper 'On the origin of the absorption spectra of certain types of organic compounds' by N P McCleland Sectional Committee: Physics and Chemistry Recommended for publication in the 'Proceedings of the Royal Society of London'. Does not feel competent to give a full opinion on the paper. Suggests some of the point require more defining. [Not published] Endorsed on verso as received 3 April 1914. [April 1914]