Copy letter from [Joseph Larmor], to W G Duffield, Physical Laboratory, Manchester 'Dear Sir, I have the pleasure in informing you that a Mackinnon Studentship has been awarded to you for the year 1906-1907, for the continuation of your studies on "The arc spectra of metals under high pressures"'. I am, Faithfully yours, Sec RS [Secretary, RS]'. 6 July 1906