Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         "crystal-kingdom"
           "minerals constituting rocks"
             "Alumina-Silicates containing water"
               20.1 agalmatolite
               20.2 pyrophyllite
               21.1 zeolite Cronstedt, 1756
               21.2 prehnite