Copy letter from Robert William Frederick Harrison to Professor J [John] H [Henry] Poynting FRS, Chairman of the Physics and Chemistry Committee 'Phil[osophical] Trans[actions of the Royal Society] paper by Mr A Fowler, FRAS [Fellow of the Royal Astronomical Society], on "The spectrum of magnesium hydride", communicated by Prof H L Callendar, FRS. Both referees (Prof G D Liveing and Sir William Huggins) have reported in favour of the publication of the above paper in full in the Philosophical Transactions. Will the Chairman please say whether he concurs in the publication of the paper proceedings under Standing Order 43?' 15 July 1909