Second letter to Eric Keightley Rideal, regarding two papers 'On the catalytic cyclization of aliphatic hydrocarbons. I' and 'On the catalytic cyclization of aliphatic hydrocarbons. II' by E F G Herington and Eric Keightley Rideal Sectional Committee: Physics Encloses two copies of the proof, one of which should be corrected and returned, the other can be retained as a confidential document. Has not heard of any governmental departments require copies. Associated note from Alfred Charles Glyn Egerton, says to see Eric Keightley Rideal's letter. Hugh Stott Taylor has published similar results, and to check with Dr Sinnatt. [Published in the 'Proceedings of the Royal Society of London'] No received date. 16 June 1942