Et primum est ipsa terrena; habetque ex umore aquae fontes; item calores, unde etiam sulphur, alumen, bitumen nascitur; aerisque spiritus inmanes, qui, cum graves per intervenia fistulosa terrae perveniunt ad fossionem puteorum et ibi homines offendunt fodientes, ut naturali vaporis obturant eorum naribus spiritus animales; ita, qui non celerius inde effugiunt, ibi interimuntur.
First, it is itself earthy; from the liquid, it has springs of water; there are various heats from which sulphur, alum and bitumen arise; and mighty currents of air. When these are heavy and come through the porous intervals of the soil to the wells which are being dug, they affect the excavators, in so far as the nature of the exhalation chokes the animal spirits in their nostrils. Hence those who fail to escape at once, die there.
final_alignments\Vitruvius_Architecture_Book_8.json