III. Non nascitur cum argento, quod ex nigro fit[a].
IV. Nascitur summa tellure arenosa[a]; sed etiam ex profunda
effoditur[h].
V. Arenæ istæ lavantur a metallicis, conflatæque in album plumbum
resolvuntur[a].
A History of Inventions, Discoveries, and Origins, Volume 2 (of 2) · 第 49 / 115 题