Referee's Report by [Alfred Joseph] Clark on a paper 'The photochemistry of proteins with especial reference to the pharmacological and therapeutic actions of ultraviolet radiation, I and II' by [Joseph Stanley] Mitchell Paper reference code: B.150 Sectional Committee: Physiology Recommends the paper for publication in the Proceedings [of the Royal Society]. Suggests the paper be published in three parts. States that the paper is 'one of exceptional interest + importance'. [Not published as a single publication, likely reworked as Part II of 'Photochemical reactions in monolayers: The photochemistry of proteins" co-authored with Erik Keightley Rideal, sent in May 1838 and published in Proc. A vol. 167, issue 930]. Received 21 May 1937 [May 1937]