Copy letter from William Bate Hardy, Secretary of the Royal Society; to Sir Jagadis [Chunder] Bose, FRS Informs Sir Jagadis [Chunder] Bose that his desire to demonstrate the Crescograph at the Society should be communicated immediately to the appropriate Committee for their consideration. Notes that, unless this Crescograph differs to the one he has demonstrated elsewhere, he may find the Committee reluctant to permit this demonstration. 13 October 1920