Oxygen

Priestley discovered a gas he called 'dephlogisticated air' and eventually oxygen. It allowed combustibles to burn more brilliantly and rapidly than in ordinary air and seemed to have an invigorating effect when inhaled.
Joseph Priestley England 1774
Oxygen

Priestley discovered a gas he called 'dephlogisticated air' and eventually oxygen. It allowed combustibles to burn more brilliantly and rapidly than in ordinary air and seemed to have an invigorating effect when inhaled.