Papers of Sir Arthur Keith: anatomical sketches and related papers: drawing of a spine Drawing of spine labelled 'This is a drawing I made of a body (female) from muscles and viscera were removed to demonstrate the movements and results of artificial respiration by the Sharper Schafer method. The lines within the thorax mark the positions taken by the vertebral bodies when aspiratory pressure was applied'. Pencil on card divided by pencil lines into 1" squares. Broken in half. 1909