Copy letter from Robert William Frederick Harrison, to M Jan Ropytowski, Klein's Hotel, 38 Finsbury Square, E.C. Harrison acknowledges receipt of Ropytowski's letter of 28 December, but cannot receive his paper unless it is communicated by a Fellow or Foreign Member of the Royal Society and so returns it by this post. He mentions the established rule that the Society never express their opinion on subjects submitted to them. 4 January 1908