Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society to Dr Peter Chalmers Mitchell FRS 'Dr Shipley has sent in a request for the resuspension of Dr Hoyle, and says that you are willing to be seconder. It appears, however, that you have not signed the certificate, which should of course be done to make matters regular, which should of course be done to make matters regular. Perhaps you will do so when next at the Royal Society.' 19 March 1915