Referee's report by Frederick William Andrewes, on a paper 'Studies in bacterial variability.— On the occurrence and development of dys-agglutinable, eu-agglutinable and hyper-agglutinable forms of certain bacteria. (A report to the medical research council.)' by E W Ainley Walker Sectional Committee: Physiology Recommended for publication in the 'Proceedings of the Royal Society of London'. [Published in the 'Proceedings of the Royal Society of London' B, 1922] Endorsed on verso as received 22 October 1921. 20 October 1921