Letter from H B [Henry Bradwardine] Jackson, 4 North Street, Westminster, to 'Dear Sir' [David Prain?] He expects to leave to take command of the Mediterranean squadron and therefore will not be able to attend meetings of the Royal Society Club for the next sessions. He proposes to invoke rule XI and become an Honorary Member after the Anniversary dinner next week, He informs the Treasurer now, so that the vacancy might be filled by another and he hopes his absence will be only temporary. 25 June 1914