ABSTRACT

In March 1782 Priestley addressed a letter to Josiah Wedgwood, his fellow-member at the Birmingham Lunar Society. “Before my late experiments,” he wrote,

phlogiston was indeed almost given up by the Lunar Society, but now it seems to be reestablished. Mr. Kirwan in a letter I have received from him this day, says that he has given in a paper to the R. Society, to prove, from my former experiments that phlogiston must be the same thing with inflammable air, and also that dephlogisticated air and phlogiston make fixed air. 1