Systema naturæ - nature
   Universum - universe see [unranked] Mundus Plinius
     naturalia - natural bodies
       Regnum Lapideum - mineral kingdom
         Class Mineræ - minerals
           Order Mercurialia - metals
             Genus Hydrargyrum - mercury see mercury
               1 Hydrargyrum petra varia vestitum
               1.0 Minera mercurii see Hydrargyrum petra varia vestitum
               2 Hydrargyrum rubro-tinctorium
               2.0 Cinnabaris nativa see Hydrargyrum rubro-tinctorium