Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Mr Satyendra Ray; Physics Department, Lucknow University, Lucknow, India Acknowledges receipt of Mr Satyendra Ray's manuscript 'Shifts of Hald a Fringe Width obtained with Michelson Interferometer', and confirms that a copies are being forwarded to Sir Joseph Thomson and Professor Porter. 30 November 1925