1. The phlogiston theory was proposed in 1667 by Johann Joachim Becher. 2. Crell was involved in the sometimes harsh discussion about the phlogiston theory . 3. Lavoisier s years of experimentation formed a body of work that contested phlogiston theory . 4. At the end of his life he became a follower of the phlogiston theory . 5. Von Crell translated some articles of Richard Kirwan, a supporter of the phlogiston theory . 6. Cavendish, as indicated above, used the language of the old phlogiston theory in chemistry. 7. Although many of his results puzzled him, Priestley used phlogiston theory to resolve the difficulties. 8. He recognized and named oxygen ( 1778 ) and hydrogen ( 1783 ) and opposed the phlogiston theory . 9. Scheele explained oxygen using phlogistical terms because he did not believe that his discovery disproved the phlogiston theory . 10. For example, the phlogiston theory was entirely replaced by the quite different concept of energy and related laws.
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