When was ether first used in surgery?

In 1818, an English scientist, Michael Faraday, suggested that ether could be used to relieve pain. In 1842, an American doctor named Crawford W. Long used ether to make a patient unconscious while he removed a cyst. In 1846, a Boston dentist, W.T.G. Morton, gave a public demonstration of ether anaesthesia at Massachusetts General Hospital while Dr. J. C. Warren conducted a surgery.