Mr. Kirwan attempted to answer it, and to prove that phlogiston is no other than hydrogen.
"phlogiston" and "vortices" had their day and are forgotten.
It is seen from these experiments that phlogiston, the simple inflammable principle, is present in each of them.
He thought they were "compounded" of a certain earth, or calx, and phlogiston.
Copper is much more expeditiously deprived of its phlogiston by calcining it in a crucible with Nitre.
It was phlogiston and that only which occasioned the electric current.
I should have sent you my Defence of phlogiston, but that I presume you have seen it.
Phosphorus then must consist, say the Stahlians, of phlogiston and this acid.
What is this but common air completely deprived of phlogiston?
When a substance burns, phlogiston, it was said, rushes out of it.
1730, hypothetical inflammatory principle, formerly believed to exist in all combustible matter, from Modern Latin (1702), from Greek phlogiston (1610s in this sense), neuter of phlogistos "burnt up, inflammable," from phlogizein "to set on fire, burn," from phlox (genitive phlogos) "flame, blaze" (see bleach (v.)). Theory propounded by Stahl (1702), denied by Lavoisier (1775), defended by Priestley but generally abandoned by 1800. Related: Phlogistic; phlogisticated.
A hypothetical colorless, odorless, weightless substance once believed to be the combustible part of all flammable substances and to be given off as flame during burning. In the 18th century, Antoine Lavoisier proved that phlogiston does not exist. See Note at Lavoisier.