Copy letter from Robert William Frederick Harrison, to Louis Napoleon George Filon, [Fellow of the Royal Society] With reference to Filon's letter of the 13th September, Harrison brought Filon's suggestion for the illustration of his abstract for the shafting paper before the Committee at its first meetings after the recess. The Committee think it undesirable to illustrate the abstract, which will therefore be published without reference to the figures. Proof of the full 'Philosophical Transactions [of the Royal Society]' paper is now being posted to Filon. 8 November 1899