Following the lead of Carrel and Baker (1926), Dr. Albert Fisher, director of Carlsberg Biological Institute (Copenhagen), has succeeded in preparing a sterile, stable embryonic tissue extract which is effective in accelerating wound-healing. In exptl. wounds of dogs (Nielsen, 1939) the extract shortened healing time on an avg. of 32%. In 18 human cases reported by Waugh the wound-healing time was shortened 30% by the extract. Fisher''s studies indicate that the active principle is a protein derivative of embryonic tissue which exists intracellularly but is not a hormone. It is in all embryonic tissue but disappears rapidly with the close of embryonic life. This protein derivative of embryonic tissue extract is adsorbed on kaolin powder. The wound is powdered, covered with gauze and dressed every 5 days. Details of 4 typical cases are given. For measuring the wound and its progressive reduction it was covered by a sheet of sterile cellophane and the outline lightly traced with wax-pencil and later reproduced on paper. A commercial product named epi-cutan is now prepared under Fisher''s direction by Messrs. Lundbeck of Copenhagen. Clinical trials have been made in several clinics by S. Kaier (1927) and Nielsen (1939).