Copy letter from [Francis Alexander Towle, Assistant Secretary of the Royal Society]; to Sir Herbert Jackson, KBE, FRS Titled 'Paper by [Francis] L. Usher on "A Mechanism of Gelatinisation"'. 'The above paper has been communicated by Professor [Robert] Whytlaw-Gray. It is estimated to print at 10 pages of the Proceedings. Sir James Jeans would be glad if you would suggest a referee, and would like to know if you are prepared to pass under [Standing Order] 43 if the paper is favourably reported upon.' [May 1929]