Ideoque tunc quae spongia sive pumex Pompeianus vocatur excocto ex alio genere lapidis in hanc redacta esse videtur generis qualitatem.
And therefore now that which is called spongestone or Pompeian pumice seems to be brought to this general quality from another kind of stone when it is subjected to heat.
final_alignments\Vitruvius_Architecture_Book_2.json