i eA nt enpeenied 
222 T. N. Dale—Geology of Rhode Island : 
coal was struck. At 25, near corner of Farewell and Marlbo- 
rough streets some black slates were exposed several years ago 
with Pecopteris arborescens and P. hemitaloides, together with a 
‘new species which Lesquereux named P. Clarkii*; at 26, Fort 
Greene, and the adjoining “ Blue Rocks” dark gray argillaceous 
schists dip 30° N.W. : 
Miantonomah Hill, Coddington Cove-—At 27, in a ravine 
south of this hill, is an outcrop of more than 20 feet of light 
gray argillaceous schists associated "with a conglomerate of 
small quartzyte pebbles dipping 20° N. At 28, west of gt 
rate, like that of Easton’s Point, 10-15 feet thick, overlying ® 
siliceous, argillaceous grit, all dipping 15° S.E.toSS.E.t These 
grits crop out again at 29. Schists, like those of 27, but of 
changes to 25°-30° W., a little north to 30°-85° N. W., the ben 
in the shore being just opposite to that in the strike. ; 
the schist near 88 resembles that of Levin street, etc. Beyond, 
the strata strike N.-S. with a very high westerly dip an 
continue to 84. At 35, 20°-25° W., and a little south the re 
mains of a thick vertical quartz vein stand on the beach ass0- 
ciated with the regular conglomerate but both vein and rock 
contain much chlorite. oS 
Bishop Rock.—On the east side, argillaceous and carbona- 
ceous schists, alternating with grit and quartzyte conglomeralé, 
dip 80°-85° N. to N.N.W. The carbonaceous schists with fer 
ruginous nodules on the W. and N. side dip 45°-50° N. 
Coaster’s Harbor Island and Rock, Gull Rock —At 36 slaty, 
chloritic argillyte with small passages of calcite, a rock similar : 
at at Brown’s Point in Little Compton, dipping 207 ee) 
N.E. At Coaster’s Harbor Rock, which lies due $., the same 
rock recurs, dipping 15° N., and also at the Gull Rocks, pe 
ping 15°-20° N. with E.-W. vertical fissures. In the litt@ 7 
* See IT Geol. Survey Pa., vol. P, text p. 261 and plate. «aot tnterest 4 
+Two bowlders from this vicinity are of extra-limital stratigrapbical im eS 
One, found by Mr, Alexander Peckham SW. of 27, a reddish crinoid limeston® : 
with a Spirifer and Strophomena. The other, from the east base of Miantono tite)” 
Hill, a dark argillaceous schist with minute crystals of Ottrelite he i 
and an impression of a plant stem 14 inches long and 1 inch wide mark schist 
longitudinal grooves 13mm. apart. Bowlders and pebbles of Ottrelite S®™"” 
abound about Newport, but I have failed to find any outcrop of it. ee 
