Puzzle 4

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Across
  1. 1. Prison Island San Francisco
  2. 3. Chemical element (atomic number 15)
  3. 7. A difference between two objects
  4. 12. A mental or emotional state
  5. 14. Any coniferous tree of the genus Pinus
  6. 15. A greeting
  7. 16. A British gold coin worth 20 shillings
  8. 18. Addition of smaller amounts
  9. 19. To lose remembrance of
  10. 20. Group of sheep
Down
  1. 2. Pause in a piece of music
  2. 4. To rotate on an axis
  3. 5. An increase in wages or salary
  4. 6. 2013 Tour de France winner
  5. 8. A declaration or remark
  6. 9. Capital city of Wales
  7. 10. Capable of producing great physical force
  8. 11. Smaller than a mountain
  9. 13. The bony cavity containing the eyeball
  10. 17. A subjective belief