Copy letter from Robert William Frederick Harrison, to the Secretary, Admiralty, Whitehall, S.W. 'I have to acknowledge receipt of your letter (M 2137) of the 22nd inst., having reference to the detailing of one of H. M's surveying Ships for the purpose of assisting in the boring of a coral reef in the central Pacific. I am, Sir, Your obedient Servant, Robt Harrison Asst. Sec. R. S. [Assistant Secretary, Royal Society]'. 24 March 1897