Copy letter from Robert William Frederick Harrison, to Hubert Congreve, Southbank, Moore, near Warrington 'Dear Sir, With reference to your letter of the 15th inst., no objection will be raised to your copying the illustrations in the Krakatoa Report which you mention, provided that, as expressed in your note, they are kept entirely for your private use. I am. Yours faithfully, Robt Harrison Asst. Sec. R. S. [Assistant Secretary, Royal Society]'. 17 December 1897