Possible Clues:

• Film copper in case of sadism
• How the South gets with what's bad on top
• Impurities on surface of liquid, or rotten people
• Sulphur goes with it to make it bad on top
• Despicable people on top
• Pond-surface film
• Floating impurities on liquid
• Matter floating on 9 ac
• There's sulphur with what's bad on top
• Refuse to be seen on top