(Nachtrag): Nachtrag zu den Conchylien Im Fürstlichen Cabinette zu Rudolstadt: Mit Vier Kupfern
This 1791 German supplement, by Christoph Ludwig Kämmerer with editorial work by Georg Emanuel Beer and Friedrich Karl, catalogues shells from the princely cabinet at Rudolstadt for collectors and naturalists. Its hand-coloured copper engravings show shells in fine stippled and hatched line, with careful shading that gives each form a convincing sheen and curve, useful for designers studying organic spiral and banded textures.
