Philoſophers that opinioned the vvorlds deſtruction by fire, did never dreame of annihilation, vvhich is beyond the povver of ſublunary cauſes; for the laſt and proper action of that element [fire] is but vitrification, or a reduction of a body into Glaſſe, and therefore ſome of our Chymicks factiouſly affirme; yea, and urge Scripture for it, that at the laſt fire all ſhall be cryſtallized and reverberated into Glaſſe, vvhich is the utmoſt action of that element.
Source: wiktionary