Second referee's report by Leonard James Spencer, on a paper 'The lamellar structure of potash-soda felspars' by S H Chao and W H Taylor Sectional Committee: Physics Not recommended for publication in the 'Proceedings of the Royal Society of London'. Stands by his earlier report, and finds the authors' conclusions false. [Published in the 'Proceedings of the Royal Society of London'] Endorsed on recto as received 2 October 1939. 1 October 1939