Referee's report by John Edward Lennard-Jones, on a paper 'The absorption spectra and photochemistry of poly­atomic molecules containing alkyl radicals - V—Vibration frequencies and structure' by Harold Warris Thompson and John Wilfrid Linnett Sectional Committee: Physics Recommended for publication in the 'Proceedings of the Royal Society of London'. Finds the limitations of the experiment not completely appreciated, andthe results not critically analysed. Criticises the determination of the force constants. [Published in the 'Proceedings of the Royal Society of London'] Endorsed on verso as received 18 February 1937. [February 1937]