C. H. Hitchcock—Helderberg Rocks in New Hampshire. 559 
degrees, S. 10° to 20° E. The ground is cleared and the ledges 
common. The junction between this rock and the slates can be 
seen to the best advantage near A. Mill’s house. At the house 
the slates dip 85°, N. 10° W., and a short distance southeast 70°, 
8. 20° K., showing a small anticlinal where the rock was crowded 
hard. The schists, including calcareous limestone. a drusy rock, 
and diabase, dip 85° N. 70° W. At A. P. Hubbard's, exactly 
upon the section line, the dip is 85°, S. 20° E. The soft clay 
slate is thin-bedded, jointed but not contorted. The same posi- 
tion continues two-thirds of the way to J. Shute’s house. The 
last third of the way, the slate resumes the dip of N. 20° W., 
and disturbances are common. The cleavage planes can also 
This is the most important of the sections, partly because 
