Copy letter from Robert William Frederick Harrison, to Sir William Huggins, [Fellow of the Royal Society] Professor Lebon's book has been delivered to the Society and is being acknowledged in the usual way with an official letter of thanks. There is no necessity for a presentation book to be introduced by a Fellow, but he thinks that if perhaps there were some such rules, the library might be spared a good many works which publishers and authors send but which are very often not of a kind to occupy a place on the Society's shelves. 19 December 1899