Complex sentence: Sir Humphry Davy used the first anaesthetic in 1799, nitrous oxide laughing gas.R. Liston ether was dismissed as an anaesthetic as it irritated the lungs of the patients.
Split into simpler sentences: Sir Humphry Davy used the first anaesthetic in 1799, nitrous oxide laughing gas. J. R. Lister's ether was dismissed as an anaesthetic as it irritated the lungs of the patients.