Referee's report by Sydney Chapman, on a paper 'The dissipation of energy in permanent ocean currents, with some relations between salinities, temperatures and currents' by R O Street Sectional Committee: Mathematics Recommended for publication in the 'Proceedings of the Royal Society of London'. Suggests the second part of the paper be deferred until more complete investigations have been completed. [Published in the 'Proceedings of the Royal Society of London' A, 1921] Endorsed on verso as received 2 February 1921. [February 1921]