Letter from W Hayden, 3 Little London, Chichester, to the Secretaries of the Royal Society Hayden enquires if his letter of the 29th will be laid before the Council of the Royal Society, and remarks on the time sentsitive nature 'as the printed regulations say that certificates of qualification must be recived by the first Thursday in March'. Encloses 'further exmaples of angular equations from which their peculiar properties will readily be percieved'. 16 February 1894