What's another name for laughing gas?

Who discovered laughing gas?

when was laughing gas discovered?

why was horace wells so important in the downfall of laughing gas?

who was john collins warren?

What did rober liston later use on his patient?

why was william morton important?

what were the side effects of ether?

who discovered chloroform and when?

how did simpson discover chloroform?

what is the downfall to chloroform?

why didn't people agree with anaesthetics?

who was robert liston?