Inside the Ether Dome (IMAGE) Scripps Research Institute Caption General anesthesia has been in use for nearly 175 years, but its mechanism for causing loss of consciousness has been unknown until now. So momentous was the first use of ether that it was memorialized in this painting, "First Operation Under Ether," by Robert C. Hinckley. Credit Francis A. Countway Library of Medicine, Harvard Medical School Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.