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.Share this articleLeave a commentThe Associated PressAuthorAuthor’s Selected ArticlesJudge Nixes Conviction of 1 of 2 Men Found Guilty of Killing Run-DMC’s Jam Master JayDec 20, 2025Implosion Takes Down a Nearly Century-Old Mississippi River BridgeDec 20, 20253 Killed in Taiwan Knife Attack, Suspect Falls to Death From Department StoreDec 20, 2025How Major US Stock Indexes Fared Dec. 19Dec 19, 2025