Letter from Richard Whiddington, regarding a paper 'The lamellar structure of potash-soda felspars' by S H Chao and W H Taylor Sectional Committee: Physics Recommended for publication in the 'Proceedings of the Royal Society of London'. Agrees with Alfed Charles Glyn Egerton that the paper should now be passed, but as the paper is of a preliminary nature it should preferably be shorter than eighteen pages. Discusses an expenses claim. [Published in the 'Proceedings of the Royal Society of London'] Endorsed on recto as received 4 November 1939. 3 November 1939