Copy letter from Robert William Frederick Harrison, to Professor Arthur Gamgee, 5 Avenue du Kursaal, Montreux, Switzerland In consequence of his absence Rucker is prevented from responding to Gamgee's wishes concerning the experiments on the magnetic properties of haemoglobin. Suggests Gamgee ask Professor Schsuter to have the measurements made in his laboratory. If Gamgee follows this course Harrison will have his letter of 14 January sent to Schuster. 6 February 1901