Experiments and Observations on the Gastric Juice and the Physiology of Digestion is a scientific book written by William Beaumont, a physician who conducted extensive research on the human digestive system during the 19th century. The book is a comprehensive study of the gastric juice and its role in the process of digestion. It contains a detailed account of the experiments and observations made by Beaumont on his patient, Alexis St. Martin, who had a permanent opening in his stomach due to a gunshot wound. The book provides a thorough analysis of the chemical composition of the gastric juice, its secretion, and its effects on food. It also includes a discussion of the various factors that influence digestion, such as temperature, acidity, and the presence of enzymes. The book is considered a landmark in the field of gastroenterology and is widely regarded as a classic in medical literature. It remains an important reference for medical professionals and researchers interested in the physiology of digestion.1833. Biographical Essay A Pioneer American Physiologist by Sir William Osler (1902). Contents: Preliminary Observations; Aliment; Hunger and Thirst; Satisfaction and Satiety; Mastication, Insalivation and Deglutition; Digestion by the Gastric Juice; Appearance of the Villous Coat, and the Motions of the Stomach; Chymification and Uses of the Bile and Pancreatic Juice; Experiments and Observations.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.