Copy letter from C R [Charles Richard] Weld, the Assistant Secretary of the Royal Society; to Dr [Cedric Herbert] Hassall Informs that the impression given to Hassall after his first letter, was that the Council could not allow alterations to be made to the paper 'On indigo in human urine'. It is also not the practice of the Council to put authors of papers in communication with referees. 1 February 1854