ZAK Zürich pp 87-92
Future Development of Volatile Anesthetics
Inhalation anesthetics have been known for a very long time. Diethyl ether, originally called sweet vitriol, was discovered by Valerius Cordus in 1540 . Its anesthetic properties were observed by Paracelsus at about the same time. He reported that “It is taken even by chickens and they fall asleep from it for a while but awaken later without harm” . About 40 years later, in 1581, Giambattista Delia Porta  used ether on humans, but it was not employed for any type of surgical anesthesia.
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