Referee's report by Nevill Francis Mott, on a paper 'Experimental and theoretical problems of photography, II' by J E P Wagstaff and W A Prowse Sectional Committee: Physics Recommended for publication in the 'Proceedings of the Royal Society of London'. The facts depend on the theory of the first paper, which the experimental results could be published without. Suggests the paper might be more suited for a photographic journal. [Not published] Endorsed on verso as received 13 October 1937. [October 1937]