Related Clues:

• Organ
• With 25-Across, a puzzle
• Scarecrow's lack
• Wave or storm, preceder
• Outer layer of the cerebrum
• Outer grey matter of brain
• and 15 ac. The loss of experts through emigration
• Outer grey matter of the brain
• The outer grey matter of the brain
• It's in the skull
• It controls the central nervous system
• One would have thought that it would at last be wet
• If it's so grey it will be wet at last and thought to be there
• Wet at last and all in on top
• Where one might have a thought at last for 19 down