guaicum

Updated: May 7, 2025

This we have observ'd in I know not how many Tinctures drawn with Spirit of Wine from Jalap, Guaicum, and several other Vegetables; and not only in the Solutions of Amber, Benzoin, and divers other Concretes made with the same Menstruum, but also in divers Mineral Tinctures.

Robert Boyle - Experiments and Considerations Touching Colours (1664)