Recueil de memoires et d'observations sur la formation & sur la fabrication du salpêtre
A 1776 Paris treatise on saltpeter formation and manufacture, compiled from memoirs by Pierre Claude Delagardette and the French Académie des sciences for technical readers and chemists. Its pictures are small woodcut ornaments, a scrolled acanthus leaf cluster, a cartouche with a central urn, and a stylized fleur-de-lis tulip, which a designer could draw on for border and vignette ideas in eighteenth-century French ornament.
