Image 2 from GEORG AGRICOLA (1494 - 1555). De Ortu et Causis Subterraneorum [and other works]. Basel: Hieronymus Frobenius and Nikolaus Episcopius, 1546.

Image 2 from GEORG AGRICOLA (1494 - 1555). De Ortu et Causis Subterraneorum [and other works]. Basel: Hieronymus Frobenius and Nikolaus Episcopius, 1546.