Traité de Minéralogie
Pierre Armand Dufrénoy's Traité de Minéralogie, a French academic treatise of 1855 issued for students of mineralogy and crystallography. The plates are fine outline engravings of crystal forms, each solid drawn in axonometric view with dotted hidden edges, lettered faces and axes, arranged in grids under species names set in small capitals; useful for geometric line motifs, diagram lettering and technical plate layout.
