Note 219 — Chapter XII
Reading edition
Stahl, taking up the obscure notions of Becher and Van Helmont, supposed the phenomena of combustion to be due to phlogiston. He imagined that by combination with phlogiston, a body was rendered combustible, and that its disengagement occasioned combustion, and after its evolution there remained either an acid or an earth: thus sulphur was, by this theory, supposed to be composed of phlogiston and sulphuric acid, and lead of the calx of lead and phlogiston, &c.