Davy was an English chemist and one of the greatest exponents of the scientific method. His discovery of the anesthetic effect of nitrous oxide was a major contribution to surgery. He did early research on voltaic cells and batteries, tanning, electrolysis, and mineral analysis, and was the first to systematically apply chemical principles to farming. His research on mine explosions and his invention of the safety lamp brought him great prestige. Davy also proved that diamond is a form of what? Discuss