PLATE XVIII. 



THE WAPPING AND CAMP-MEETING CUTTINGS. 



Fig. 1. — Section of the fine-grained, contorted sands at the Wapping cutting on the Canal Railroad, 

 in Deerfield. 



Fig. 2. — Section on the west side of the Camp Meeting cutting, between the south end of the drunilin 

 and the brook, showing the fourth advance of the ice into the second sands. It is opposite to 

 the portions G and I on the east section, 3 rods distant from it. It isiepresented by the discon- 

 nected mass of till above I. 



Fig. 3. — Enlargement of part of PI. XV (p. 678) at a point halfway between G and H, and above the 

 second sands, where two large bowlders appear. It shows the jjassage of the fourth ice over 

 the older clays, here nearly all eroded, and the thrust of the bowlders into the clays, and the 

 kneading together of the clays and subjacent sands. The wind erosion of the sand has pro- 

 duced deep, car-like depressions in the lower part of the frozen wall. 

 694 



