'World's oldest' surviving periodic table found in Scotland

Experts have dated a periodic table chart found in Scotland's University of St Andrews as being printed between 1879 and 1886, believed to be the oldest surviving periodic table. The chart was found at the University's School of Chemistry in 2014. It contains elements gallium and scandium, discovered in 1875 and 1879 respectively, while germanium, discovered in 1886, is missing.