Discovery of Thomas Jefferson at University Teaches Researchers About ScienceSavePrintA chemical hearth recently discovered in the walls of the Rotunda dates back to its Jeffersonian origins. Dan Addison / University of VirginiaThe Associated Press10/16/2015|Updated: 10/16/2015Dan Addison / University of VirginiaWe had a problem loading this article. Please enable javascript or use a different browser. If the issue persists, please visit our help center.