Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         "crystal-kingdom"
           chemical substances
             chemical compounds
               Class oximes [R2C=NOH]
                 1 Class aldoximes [RCH=NOH]
                 2 Class ketoximes [R2C=NOH (R≠H)]
                 3 Class amide oximes [RC(NH2)=NOH]