Georg Anton Volkmanns ... Silesia subterranea, oder Schlesien, mit seinen unterirdischen Schätzen ...
Silesia subterranea is a 1720 German natural history book by Georg Anton Volkmann, published by Moritz Georg Weidmann, describing the mineral, fossil and rock treasures beneath Silesia for a learned readership. Its numbered copperplate pages show rocks, petrified forms, nodules, concretions and shells drawn in fine hatched and stippled line, a useful model for designers wanting precise technical botanical-style texture studies.
