od 
50 —. Miscellaneous Localities of Minerals. 
_ Rock Specimens for the American Geological Societys 
1. Talcose Slate, containing common augite. This rock 
in ledges forms the western shore of Sechuest Point, S, E. 
part of Middletown. ; : 
2. Gray Wacke, or Puddingstone. It forms a mural 
along the western part of Sechuest beach, in the S. E. 
part of Middletown, about two miles from Newport, T 
ever seen. It is composed of oval siliceous pebbles, 
which vary in size, from the smallest grains to five feet in 
length ; all of them much compressed and pointing N. and 
S. Colour, light bluish gray. This rock has transverse 
seams which are straight and perpendicular. Between 
two of these seams, perhaps five feet apart, at the highest 
part of the cliff, the reck is broken out and washed away 
by the surf, for thirty or forty yards from the shore, and 
forms what is called “‘ Purgatory.”? This rock rests upon 
3. Argillite. 
4. Granite, Newport, a vein of which commences about 
20 rods E. of the bed of serpentine and continues in a S. 
S. E. direction about 12 miles to the shore at Coggeshall’s 
Ledge, passing under Coggeshall’s pond, and is perhaps 
less than + of a mile wide. E. of this granite is argil~ 
lite, 3. 
5. Argillite, forming the S. shore of Newport harbour, 
immediately N. of the bed of serpentine, 
6. Serpentine, commencing one mile in a direct line S. 
W. from the Episcopal church, on Brenton’s Neck, ata 
place called ‘* Willow grove,” on Thos. Hazard’s land, S. 
of the rocks of Limestone in the S. part of the harbour, in 
an extensive bed, extending perhaps } of a mile to the 
shore on the west. 
7. A Siliceous Slate lies west of the granite ridge and 
8. Basanite, is imbedded in the foregoing in different 
places, and more abundant 23 miles in a direct line S. W. 
by S. from the Episcopal Church, on the W. side of Price’s 
creek, 60 rods from its mouth. : : 
9. Shining Argillite, forming the shore of Cannonicut 
Island, N. of the light house, and near the ferry landing 
&e, &c. Jamestown. 
