Letter from [Joseph Ernest] Petavel, The University, Manchester, to the Assistant Secretary of the Royal Society, Burlington House, London 'Dear Sir, I enclose the form referring to the "Philosophical Transactions". With regard to the "Proceedings" I should be obliged if you would let me know at what price I can obtain volumes previous to the present year, for I should like to start my collection with the first volume of the new and enlarged series. I am, Yours truly, J.E.Petavel'. 12 June 1907