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Priestley found that water treated in this manner had a pleasant taste, and he offered it to friends as a refreshing drink. In 1772, Priestley published a paper entitled ''Impregnating Water with Fixed Air'' in which he describes dripping ''oil of vitriol'' (or [[sulfuric acid]] as it is now called) onto [[chalk]] to produce carbon dioxide gas, and encouraging the gas to dissolve into an agitated bowl of water.<ref name="truetex.com"/>
Another Englishman, John Mervin Nooth, improved Priestley's design and sold his apparatus for commercial use in pharmacies. Swedish chemist [[Torbern Bergman]] invented a generating apparatus that made carbonated water from chalk by the use of sulfuric acid. Bergman's apparatus allowed imitation mineral water to be produced in large amounts. Swedish chemist [[Jöns Jacob Berzelius]] started to add flavors (spices, juices, and wine) to carbonated water in the late 18th century.
===Phosphate soda===
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