Georgii Agricolae De ortu & causis subterraneorum libri V
A 1546 Latin treatise by the mining scholar Georgius Agricola on the origin and causes of things beneath the earth, printed in Basel by Froben and Episcopius for scholars and mining readers. The pictures are small woodcut historiated initials, each a large letter filled with figures, foliage, and a few named portrait heads such as Socrates, with lively line-cut textures a designer could borrow for decorative capitals.
