Referee's report by Charles Galton Darwin, on a paper 'Investigations on magne-crystallic action V. Paramagnetic salts of the rare earth and iron groups' by Kariamanikkam Srinivasa Krishnan and A Mookherji Sectional Committee: Physics Recommended for publication in the 'Philosophical Transactions of the Royal Society'. Has been unasy about this series of papers for a while, as they could have become an infinite sequence of experiments, bu the current paper does not point that way. [Published in the Philosophical Transactions of the Royal Society] Endorsed on verso as received 30 Septmber 1937. [September 1937]