Copy letter from Robert William Frederick Harrison, to Messrs Harrison & Sons, 45 St. Martin's Lane, W.C. Referring to the accompanying account for £5-6-9 [not enclosed], for advertising the 'Philosophical Transactions [of the Royal Society]', Harrison highlights the apparently high charges made by 'Nature' in comparison with the 'Aethenaeum', £1-9-3 verses 16 shillings. Asks the Messrs to advise about the matter and leaves it to the Messrs discretion to remark upon it to 'Nature'. 16 July 1898