The Semi-Centennial of Anesthesia is a historical book written by Massachusetts General Hospital in 1897, which commemorates the 50-year anniversary of the discovery of anesthesia, the practice of administering drugs to prevent pain during medical procedures. The book provides a comprehensive account of the events leading up to the discovery of anesthesia, including the experiments of William Morton, who first demonstrated the use of ether as an anesthetic in 1846. The book also includes contributions from other notable figures in the field of anesthesia, such as Oliver Wendell Holmes and Henry Jacob Bigelow. The Semi-Centennial of Anesthesia is an important historical document that provides insight into the development of modern medicine and the role of anesthesia in modern healthcare.This scarce antiquarian book is a facsimile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.