Search Only Images Download this image Portrait of Balthazar Georges Sage No info available for book source. Image ID: SIL-SIL14-s001-01 Supplied Caption: Portrait of Balthazar Georges Sage. Engraving by Jaques-Firmin Beauvarlet, 1731-1797. After F. G. Colson. Tags: geology, chemistry, Sage, Balthazar Georges (1740-1824) Categories: Science Collection(s): Scientific Identity No Copyright - United States Request copy of image How can I use this image?