Copy letter from an unknown correspondent, to Lieutenant Colonel Sir George Sydenham Clarke, Fellow of the Royal Society, 24 Cheniston Gardens, Kensington, W. 'Sir, It is, of course, open to you to bring an exhibition on January 28th. No programme is prepared for this meeting, so we shall not require your titles. These gatherings are of an informal nature. I am, yours truly,'. [18 January 1897]