Referee's report by John Scott Burdon-Sanderson, on the Croonian Lecture 'Immunity with special reference to cell life' by Paul Ehrlich Sectional committee: Physiology Not recommended for publication in Philosophical Transactions. It consists for the most part of matter already published and because the lectures of a similar character delivered by other distinguished foreign men of science have not been so published. Thinks the paper should appear in the Proceedings with certain alterations of wording in translation. The illustrations should be reproduced only if the paper appears in the latter journal. [Published in Proceedings of the Royal Society, 1899]. Endorsed on verso as received 23 April 1900. April 1900