Traité théorique et pratique de l'impression des tissus
A French technical treatise on textile printing by J. Persoz, published in Paris in 1846, written for dyers and calico printers. Its pictures are plain line engravings of laboratory apparatus: a funnel, graduated glass tubes, a flask, a mortar and pestle, and a stirring rod, drawn in fine hatching with lettered reference marks. A designer might take from them the clean, technical diagram style and the thin, even hatching used to show transparent glass and liquid.
