Possible Clues:

• Residue of tobacco in a pipe
• Let Tod have the tobacco residue in a pipe
• After the full stop let it be left after smoking
• Tobacco plug
• Residue of tobacco in the bowl of a pipe
• Churchwarden's bit left over?
• Let Tod supply what's left in the pipe
• Unused tobacco left in pipe
• Does he not drink in the dole at the end of the pipe?
• Unburnt tobacco left in pipe