Referee's report by Harold Jeffreys, on a paper 'Submarine seismic investigations' by Edward Crisp Bullard and T F Gaskell Sectional committee: Physics Recommended for publication in Proceedings. The punctuation is dreadful. It contains a 'howler' that often reaches publication and deserves a general warning to Fellows about it. Two sentences 'complete in themselves should not be separated by a mere comma; at least a semicolon or conjunction is neccessary'. He has corrected the mistakes in pencil. One of the sentences should be completely re-written as 'it is nothing like English'. He has altered to word 'plot' to 'graph', as the former is an American word and English words should be used instead. [Published in Proceedings of the Royal Society A, 1940]. Endorsed on verso as received 24 October 1940. October 1940