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THE PAST AND FUTURE OF NIAGARA.
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Fig. 4.
Map of the Region or Niagara Falls.
1. Strawberry Island; 2. Beaver Island; 3. Tonawanda Island; 4. Cayuga Island; 5. Brockton Island; 6. Navy Island; 7. Goat Island; 8. American Fall; 9. Horseshoe Fall; 10. Gas Spring; 11. Oldest Terrace; 12. Whirlpool; 13. Preglacial Channel; 15, 15. Line of the Escarpment; N. New Suspension Bridge; O. Old Suspension Bridge; F. Fast Ground; 16, 17. Position of the Falls when the shale shall dip below the river-bed, and the limestone shall form the entire precipice. After receding so fur, the Falls will then wear away into cascades and rapids. 18. The Old Barrier.
