📅 4 November 1847
At a gathering in Edinburgh, Simpson, Keith and Duncan inhaled chloroform and observed its anesthetic effects.
📅 4 November 1847
The dated self-experiment helped lead to chloroform use in surgery and childbirth, with safety risks recognized later.
📅 4 November 1847
The testing involved several participants; its subsequent publicity focused heavily on Simpson.
📅 4 November 1847
The 4 November episode concerned preliminary self-testing, not a documented operation on a patient.
