Carolinium
（重定向自Berzelium）
Carolinium and Berzelium were the proposed names for new chemical elements that Charles Baskerville believed he had isolated from the already known element thorium.
During his time at the University of North Carolina, Baskerville experimented with thorium and published his results in 1901. He reported having separated thorium into three fractions with slightly different chemical properties: the known thorium and two new elements, carolinium (symbol Cn) and berzelium (symbol Bz).