Referee's report by John Henry Poynting, on a paper 'On the diffraction of light by particles comparable with the wave-length' by Bernard Augustus Keen and Alfred William Porter Sectional committee: Physics and chemistry Recommended for publication in Proceedings, although if there is 'some reason why the research cannot be continued at present', the authors must withdraw the paper to improve measurements. [Published in Proceedings of the Royal Society A, 1914]. Endorsed on verso as received 17 October 1913. October 1913