Alexis St. Martin, a Canadian half-breed who had sustained a gastric fistula, was treated and investigated by Beaumont. With his human medium, Beaumont as the first to study digestion and the movements of the stomach in vivo. His work on the subject was the most important before Pavlov. Edinburgh imprint, 1838. Second edition, corrected, Burlington, Vt., 1847. Facsimile reprint, Cambridge, Harvard Univ. Press, 1929.