Referee's report by Herbert Stanley Allen, on a paper 'The excitation potential of the nitrogen second positive bands' by N Thompson and S E Williams Sectional committee: Physics Recommended for publication in Proceedings, in full. The account of the method is 'lucid and concise'. No modifications are required. [Published in Proceedings of the Royal Society A, 1934]. Endorsed on verso as received 21 August 1934. August 1934