Referee's report by Alfred Fowler, on a paper 'On the structure of the arc spectrum of gold' by John Cunningham McLennan and A B McLay Sectional Committee: Physics Recommended for publication in the 'Proceedings of the Royal Society of London'. Suggests standardising the terminology in-line with previous researches by the John Cunningham McLennan and H Grayson Smith [RR/34/61]. [Published in the 'Proceedings of the Royal Society of London' A, 1926] Endorsed on verso as received 30 June 1926. [June 1926]