A cholera investigation changes water access

At a gathering in Edinburgh, Simpson, Keith and Duncan inhaled chloroform and observed its anesthetic effects.

The dated self-experiment helped lead to chloroform use in surgery and childbirth, with safety risks recognized later.

The testing involved several participants; its subsequent publicity focused heavily on Simpson.

The 4 November episode concerned preliminary self-testing, not a documented operation on a patient.

After Snow presented evidence about cholera cases, the local authorities disabled the water pump.

His household interviews and mapping supplied evidence for the decision to stop using the pump.

The outbreak had already begun to subside when the handle was removed; the episode supported later work on waterborne disease.

He used carbolic-acid-soaked lint on eleven-year-old James Greenlees’s open leg fracture.

James Greenlees was the patient whose case became central to Lister’s early account of antiseptic surgery.

The dressing was designed to keep damaging microorganisms from multiplying in an open wound.