Copy letter from William Bate Hardy, Secretary of the Royal Society; to Sir Jagadis [Chunder] Bose, FRS Informs Sir Jagadis [Chunder] Bose that it is too late to arrange for a demonstration of the crescograph at the meeting on June 24th. Notes that if Sir Bose wishes to give a demonstration in October when the Society resumes its sittings he will propose it to the relevant Committee. 17 June 1920