Copy letter from Herbert Rix, to [John William Strutt] Lord Rayleigh, [Royal Society] 'My Lord, The type which Mr Heaviside asks for cannot be used alongside the Phil. Trans. ['Philosophical Transactions of the Royal Society'] type, as it has a different body. Harrisons say they will cast the type, but it will make considerable delay. Under these circumstances I have written the enclosed letter, which I should like you to see before it goes to him. Yours truly Herbert Rix Asst Sec RS [Assistant Secretary, Royal Society]'. 21 December 1891