Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         "crystal-kingdom"
           "minerals constituting rocks"
             "Protoxyd-Silicates, not containing water"
               hornblende
                 1 actinolite
                 2 anthophyllite
                 3 tremolite
                 4 white hornblende
                 5 asbestus