Copy letter from Robert William Frederick Harrison, to Sir Andrew Noble, Fellow of the Royal Society, Chillingham Castle, Belford, Northumberland Acknowledges Noble's letter of the previous day enclosing the abridged abstract of his paper 'Researches on Explosive, Part IV', and stating that Noble will be willing to supply 1500 copies of the plate accompanying the abstract. Has sent Noble's abstract to the printers to be set up in type at once, and will let him know later when they shall require the copies of his plate. 16 July 1906