Copy letter from Robert William Frederick Harrison, to Lord Rayleigh [John William Strutt], President, Royal Society Harrison asks that Rayleigh make a nomination for the Electrical Units Committee in accordance with the request from the Board of Trade. He also encloses a letter [not included] concerning a 'luminous tuning fork' which he cannot treat as an official 'communication' as it has been submitted by a stranger to the Society. 17 July 1907