Letter from Alfred Clarence Redfield, Department of Physiology, Harvard Medical School, 240 Longwood Avenue, Boston 17, Massachusetts, to Joseph Barcroft He has just heard from Macleod that funds of at least $500 would be available for the Peru Expedition and probably the same amount from next year's budget. Henderson has said that he could make a contribution over the £200 already paid in. The General Electric Company can loan the x-ray equipment. Forbes goes to Toronto next week to learn to measure peripheral blood flow. Redfield will travel to New York to see Binger, Harrap and Van Slyke and the electrode is almost ready. Barcroft should be a guest of Redfield's laboratory when he arrives. 3 October 1921