Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Sir Joseph [Ernest] Petavel, FRS Writes on the subject of Dr. Unwin's reappointment by the Institute of Civil Engineers [to the General Board of the National Physical Laboratory?]. Explains that Council did not consider the reasons provided sufficiently 'special' to justify Dr. Unwin's reappointment and are unlikely to reopen the matter unless any new reasons present themselves. 30 January 1923