Referee's report by Hildebrand Wolfe Harvey and Frederick Stratten Russell, on a paper 'The buoyancy of plankton diatoms: a problem of cell physiology' by F Gross and E Zeuthen Sectional Committee: Physiology and Medical Sciences Recommended for publication in the 'Proceedings of the Royal Society of London'. Requests clarification of the term 'reduced seawater'. Appended letter from Frederick Stratten Russell, dated 27 March 1948. Requests permission from the Chairman to formally extend the referee of the paper to Hildebrand Wolfe Harvey. Endorsed on recto as received 30 March 1948. [Published in the 'Proceedings of the Royal Society of London'] No received date. [1948]