M. LAVOISIER Traité élémentaire de Chimie. Paris, by Cruchet, 1793. In-8. 2 volumes. Second edition. Folding tables: Volume 1, pp. 203, 295 - Volume 2, 13 pl. Bound in speckled basane (rubbing, stains, a few holes or wormholes; hinges tired, those of T.2 split at the top). Leaves of uneven thickness. Some pages uncut. Typographical errors between numbers 5 and 3 in the pagination (e.g. 153 instead of 135), or incomplete numbering (e.g. pp. 137 and 138) without consequences on the order of the text. Soiling, spotting, stains; sunned pages; a few folds; small losses at the top or bottom corners or at the edges of some pages. T. 2: tear p. 223, p. 12 cut in two, leaf p. 15 protrudes from the edge. ON JOINT : A.F. FOURCROY Philosophie Chimique ou vérités fondamentales de la chimie moderne... Paris, chez Tourneisen fils, 1806. In-8. 3rd edition. Half-bound in basane and marbled paper (rubbing and small tears). Soiling, spotting, large stains, especially on the first pages and the title page; pages sunned. Not collated. Provenance: Library of Auguste VERNEUIL (1856-1913), inventor of synthetic ruby.