Copy letter from Robert William Frederick Harrison to Professor W [William] F [Fletcher] Barrett FRS 'Dear Prof Barrett, According to our passbook, your annual contribution of £3 was paid to Messrs Robarts, Lubbock & Co on January 1st., last, but was again paid on March 27th., last. Ishall be glad if you will make enquiry respecting this second payment. If it is intended for the annual subscription we shall have to refund the amount as being a duplicate payment.' 3 June 1909