Referee's report by Horace Tabberer Brown, on a paper 'The action of radium and certain other salts on gelatin' by W A Douglas Rudge Sectional Committee: Physics and Chemistry Recommended for publication in the 'Proceedings of the Royal Society of London'. Paper requires a little editing, and should include no more than six illustrations. The paper provides explanation for the observations of Mr Dukes. [Published in the 'Proceedings of the Royal Society of London'] Endorsed on verso as received 12 June 1906. [June 1906]