Possible Clues:

• More than a dribble comes out of these mouths
• Perhaps the mouths of the Dee, by the sound of it
• Was seated and led back to the mouths
• Some fertile regions
• River-mouth deposits
• Seated and went in front where the rivers end
• Triangular land patches at river mouths
• Lasted like triangular areas at river mouths
• How the last of the rivers get back to the last of the week that came first
• Mississippi sights