Possible Clues:

• Hades' river
• River in Hades that caused forgetfulness in those who drank its waters
• Cause of memory loss in little theatre
• Number not quite getting to lake and river
• Greek underworld river
• Articles on both sides of the Channel may occasion forgetfulness
• Forgotten the name of this river?
• Stream of consciousness? On the contrary
• ''Inferno'' river
• River whose waters caused forgetfulness