Copy letter from Robert William Frederick Harrison, to the Editor, 'Natural Science', 22 St Andrew Street, Holborn Circus 'Referring to your note of yesterday's date, it is contrary to our practice to lend the blocks of the illustrations, but you could have clichés of them at a small expense, and, upon hearing from you that you wish to have them, I will at once instruct our printers to send them to you. I am, Yours faithfully. Robt Harrison Asst. Sec R. S. [Assistant Secretary, Royal Society]'. 9 July 1896