Referee's report by Arthur Edwin Boycott, on a paper 'Factors influencing the growth of normal and malignant cells in fluid culture media' by Reginald James Ludford Sectional Committee: Physiology Recommended for publication in the 'Proceedings of the Royal Society of London'. Suggests it should be clearly stated where the current conclusions traverse the conclusions of others. The author should clearly state that he has withdrawn or otherwise heavily modified conclusions in an earlier paper, and modify parts of the current paper where necessary. [Published in the 'Proceedings of the Royal Society of London' B, 1934] Endorsed on verso as received 13 March 1934. [March 1934]