The samples were submitted to the Conseil de Commerce in Paris by "D.L.F.," probably Guillaume-Louis de la Follie. They notes refer to test of the colors using potash (an alkali), acid, and soap. Source: From [M. de Montigny], Rapport du commerce d'un écrit intitulé 'Avis utile pour le commerce par Mr D.L.F.' qui m'a été communiqué par Mr de Montaran en janvier 1778, 22 January 1778, AN F/12/2259.

From The creation of color in eighteenth-century Europe by Sarah Lowengard

Creator(s)
Subjects
  • European: 1400-1800
Citable Link
  • Fibers and fabric colored with Prussian blue. The samples were submitted to the Conseil de Commerce in Paris by "D.L.F.," probably Guillaume-Louis de la Follie. They notes refer to test of the colors using potash (an alkali), acid, and soap. Source: From [M. de Montigny], Rapport du commerce d'un écrit intitulé 'Avis utile pour le commerce par Mr D.L.F.' qui m'a été communiqué par Mr de Montaran en janvier 1778, 22 January 1778, AN F/12/2259.