Training Historic Chemistry Lab With Links To Thomas Jefferson Discovered Behind Wall Source/reposted: NPR.org  BRAKKTON BOOKER A hidden chemistry lab was unearthed by a worker doing renovations to the iconic Rotunda at the University of Virginia, and school officials say the room is directly linked to the third U.S. President Thomas Jefferson, who helped design the building. The “chemical hearth,” which dates back to the 1820s, is […] Written by Phil Ambrose October 19, 2015October 19, 2015