Second referee's report by Henry Hallett Dale, on a paper 'The pigmentary effector system VIII—The dual receptive mechanism of the amphibian background response' by Lancelot Hogben and David Slome Sectional Committee: Zoology Recommended for publication in the 'Proceedings of the Royal Society of London'. The paper has been sufficiently amended. Has discussed ways of making the papers more effective with the author. [Published in the 'Proceedings of the Royal Society of London'] Endorsed on verso as received 24 January 1936. [January 1936]