Copy letter from [James Hopwood Jeans, Secretary of the Royal Society], to Lord Rayleigh [Robert John Strutt] Since Lord Rayleigh and [Joseph John] Thomson have spoken about the radium in person and the dangers it poses, encourages Rayleigh to proceed - informs him that the radium is at the Royal Society and can be picked up at any time. [Letter is partly cut off, and the parts that do not relate to radium, discussing the paper 'The band spectrum of potassium' by Grayson Smith, have been crossed out.] 18 February 1924