Copy letter from Robert William Frederick Harrison to J [James] H [Herbert] Orton, 129 Salt Street, Bradford 'Dear Sir, With reference to my letter of June 28 and your reply thereto received on July 12, I am directed to say that the plan which you propose to adopt with regard to the modification of your paper on Crepidula fornicata is approved. I therefore return your paper for amendment and remain.' 15 July 1909