John Snow's inhaler (1847).
The ether chamber (B) contained a spiral coil so that the air entering through the brass tube (D) was saturated by ether before ascending the flexible tube (F) to the face mask (G). The ether chamber rested in a bath of warm water (A).
The ether chamber (B) contained a spiral coil so that the air entering through the brass tube (D) was saturated by ether before ascending the flexible tube (F) to the face mask (G). The ether chamber rested in a bath of warm water (A).