Copy letter from Herbert Rix, to John Young Walker Macalister, Royal Medical and Chirurgical Society, 20 Hanover Square, W. 'Dear Sir, The inclosed circular, which was sent to foreign societies some time since, will explain the purpose of the Conference about to be held. For any further particulars I must refer you to Dr H. E. [Henry Edward] Armstrong, the Chairman of the International Catalogue Committee. Yours faithfully, H Rix Asst. Sec. R.S. [Assistant Secretary, Royal Society]'. 2 April 1896