In 1799, who discovered nitrous oxide, that made patients insensible to pain, the first true anaesthetic?
Humphry, Baronet Davy Sir Humphry Davy, 1st Baronet Davy Baronets Jane Apreece Humphrey Davy Sir Humphry Davy Humprey Davy Sir Humphrey Davy Davy baronets Humphrey Davey Humphry Davy
davy baronets humphry davy humphrey davy jane apreece sir humphry davy humprey davy humphrey davey sir humphrey davy humphry baronet davy sir humphry davy 1st baronet
sir humphrey davy
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Sir Humphrey Davy