44 STRATIGRAPIilCAL GEOLOGY. 



of the Coos group here are mostly yellowish ochrey sandstones, that fre- 

 quently contain crystals of pyrite. With the sandstone there are bands 

 of a fissile argillaceous schist, in places not distinguishable from common 

 black slate. On the border of New Hampshire, in Ditton, the rock is an 

 ochrey argillaceous schist ; and at the gold mines the strata dip S. 44° 

 E. 70°. In R4 L20 the rock is a mica schist, and dips N. 26° W. 68°. 

 Going west to Newport, the rocks become decidedly calciferous. In R 

 12 L19 the mica schist dips N. 22° W. 65°. Between the church and 

 North river bands of slate are interstratified with bands of calciferous 

 mica schist, that dip N. 21° W. 72°. There are numerous outcrops of 

 the same rocks, in the vicinity of East Clifton, that dip N. 41° W. 64°. 

 In the south part of Clifton, in the vicinity of Charles Sawyer's, the rocks 

 are less micaceous and more fissile. In Hereford, a mile north of J. 

 Lambert's, the rock is an argillaceous schist, and it dips S. 36° W. 43°. 

 In the south part of Hereford, near Hall's stream, there is a corrugated 

 and wrinkled argillaceous schist. At one point it dips N. 66° E. 80°, 

 and, a few rods distant, it dips in the opposite direction. Along the 

 lower part of Hall's stream this rock is everywhere nearly vertical. In 

 Auckland, half a mile north of the west branch of Hall's stream, the argil- 

 laceous schist dips N. 18° W. 65°, On the boundary, at the head of 

 Hall's stream, the rock is an arenaceous clay slate, and dips N. 46° W. 

 65°. On Hall's stream, opposite the west branch, an argillaceous schist 

 dips N. 22° W. 74°. Crossing over from Hall's stream to the west branch 

 of Indian stream, the rdfcks have a dip quite uniform, which is N. 36° W. 

 from 70° to 80°; and the difference in texture is slight, everywhere an 

 argillaceous schist, in places more fissile than in others, and occasionally 

 containing an ochrey powder. The same rock, with a dip N. 36° W. yS°, 

 was seen two miles up the west branch of Indian stream. Between Hall's 

 and Indian streams, on an old "tote "-road from Pauquetteville in Here- 

 ford to M. K. Day's, the rocks arc as follows: Half a mile east of Hall's 

 stream there is an argillaceous schist; the strata stand nearly vertical, 

 sometimes having an easterly and then a westerly dip. A mile from 

 Hall's stream the rock is an ochrey argillaceous schist, and dips N. 62° 

 E. 65''. Between this and Day's the rocks are argillaceous, but frequently 

 contain some mica ; and, everywhere they were examined, the inclination 

 of the strata was nearly uniform with the last. In the Colebrook Acad- 



