Letter from [George Howard] Darwin, Newham Grange, Cambridge, to Mr [Robert] Harrison, [Royal Society] Informs that Sir E Shackleton will send for his paper "The tidal observations of the British Antarctic Expedition 1907". It is offered to the Royal Society on the condition that there is no objection to his publishing it in his volume of Physical Observations, due to be published in Australia. 18 September 1910