WORD SPIRAL

Starting from 1, fill in the grid clockwise with four-letter words. The last letter of each word becomes the first letter of the next to reveal a surname. 1. Slightly wet 2. Nuisance 3. Therefore 4. Counterfoil 5. Explosive device 6. Make beer 7. Abandoned child 8. Touch 9. Only remaining 10. Pith helmet 11. Object of worship 12. Lower limbs 13. Indian dress 14. Notion 15. Experts 16. Extend across or over