Copy letter from William Bate Hardy, Secretary of the Royal Society; to Professor [John Norman] Collie, FRS Encloses a report on S. J. Lewis' paper, 'The ultra violet absorption spectra and the optical radiation of the proteins of blood sera', that Professor [John Norman] Collie communuicated to the Society [not enclosed]. Reminds him that, since the paper has not been read, it is open to him to withdraw it. 5 July 1921