Related Clues:

• A barrel as for beer
• Cylinder for liquid
• Barrel as for beer
• Wooden keg with 9 imperial gallons
• Nine-gallon wooden keg
• Is that the example of potassium?
• Might C ask for K, for instance?
• Might C. ask for the instance of posassium?
• Might C. ask for something relatively coniferous?
• How potassium sets one an example
• Sort of C ask for potassium, for instance
• The instance of potassium?
• Might C. ask to be like this?
• What might be stored in there? Potassium, for instance?
• Cooper's work