Tome dixième.
The record gives only a volume title, Tome dixième, and a German iron-history library as source, so the book is likely a technical encyclopedia volume of mechanical plates. The two pictures are engraved mechanical drawings of iron machine parts with lettered reference marks, showing a cast housing with a circular central element and a second assembly with toothed jaws and bolted clamps. A designer might borrow their crisp hatched line work and the hardware-like geometry of bolts, gears and flanges.
