Referee's report by Harold Jeffreys, on a paper 'Recent advances in the technique of submarine gravity surveying' by R I B Cooper Sectional Committee: Physics Recommended for publication in the 'Proceedings of the Royal Society of London'. The paper might also be suitable for the Monthly Notices of the Geophysical Supplement. Provides detailed points of criticism, which have subsequently been crossed out. [Published in the 'Proceedings of the Royal Society of London'] No received date. [1948]