Referee's report by Thomas Martin Lowry, on a paper 'Principles and assumptions in the calculations optical rotatory power' by Werner Sectional committee: Physics Not recommended for publication in its present form. It contain little new matter and the criticisms it makes are 'too obvious to be of any real value'. A good deal of matter within the paper has already been published. The author should be ashed to read Born's paper. [Not published]. Endorsed on verso as received 9 April 1935. 8 April 1935