Copy letter from Michael Foster, to Colonel A C F FitzGeorge, Gloucester House, Park Lane, W. 'Dear Sir, I shall be much obliged if you will place the enclosed card of invitation before His Royal Highness the Duke of Cambridge and express to him on behalf of myself and the Council the great gratification it would give us and the Fellows of the Society generally if his Royal Highness would honour us with his presence on this occasion. I am, your obedient servant, M. Foster Sec. R.S. [Secretary, Royal Society]'. 17 May 1894