Letter from Alfred Clarence Redfield, Department of Physiology, Harvard Medical School, 240 Longwood Avenue, Boston 17, Massachusetts, to Joseph Barcroft Enclosing a receipt for £40. Dr. Edsall is looking into getting a special rate from the Grace Line and reservations will follow, with return passages for Barcroft and Meakins. He has made no provision for the recruit from King's. He has just returned from Henderson's camp in Vermont with others of the party. He is getting his hydrogen electrode together slowly and will go to New York to see Van Slyke's new method for pH. Bock is at the hospital hoping to get at circulation rates. Dr. Edsall is turning over the $400 to Redfield and doubts if Henderson will make a further donation. Edsall is taking up the matter of the x-ray machine with a patient who works for the General Electric Company. 23 September 1921