Est autem materiae potestas mollior quam tofus, solidior quam terra, quo penitus ab uno vehementia vaporis adusto, nonnullis locis procreatur id genus harenae quod dicitur carbunculus.
The nature of wood is softer than tufa, more solid than the earth; and when this is burnt deep down by the violence of vapour, there is generated in some places that kind of sand which is called lignite.
final_alignments\Vitruvius_Architecture_Book_2.json