Copy letter from Edwin Deller, Assistant Secretary of the Royal Society; to T. J. Swain Esquire; 97 Dawson Street, Newcastle, N.S.W. Informs Mr. T. J. Swain that the experiment to which he previously refered 'is well known to every chemist', and suggests that in future he verify the originality of his experiments by conferring with his fellow chemists in Australia. 12 July 1920