Enlightenment London surgeon. Examining his personal, professional, and genteel achievements enhances our understanding of the boundary between surgeons and physicians in Enlightenment 'marketplace' practice. Turner's pioneering writing on skin disease, De Morbis Cutaneis, emphasizes the skin's role as a physical and professional boundary between university-educated physicians who treated internal disease and apprentice-trained surgeons relegated to the care of external disorders. Turner also argued that a pregnant woman's imagination could be transferred to her unborn child, imprinting its...