coos AND ESSEX DISTRICT. 45 



emy grant, north of this, numerous observations were taken; but, as a 

 section giving the rocks in detail across the grant will be described, 

 these observations are omitted. It will be noticed that the dip of the 

 rocks, in the country between Hall's and Indian streams, is almost uni- 

 formly to the west. This seems to be due to a fault. 



Between Indian and Perry Streams. 



On some of the most northern branches of Indian stream, where gold 

 has been obtained by washing, the rock is an argillaceous schist, that is 

 sometimes ochrey. The dip, three and a half miles north of the east 

 branch, is S. 34° E. 70°; two miles north, S. iS"" E. 75°. On the east 

 branch, about a mile from Vv^here it flows into Indian stream, the rock is 

 an argillaceous schist ; but interstratified with it are bands of a hard mi- 

 caceous schist, which dips S. 22° E. 80°. On the old "tote"-road, from 

 the forks of Indian stream to Connecticut lake, a little more than a mile 

 from the forks, the rock is an ochrey argillaceous schist, some of the 

 strata showing hme incrustations. The general dip is N. 54° E. 75°. 

 Toward Perry stream the schists are micaceous, and the dip, three 

 fourths of a mile west of this stream, is N. 6S° E. 70°. These rocks 

 extend southward; and, near M. K. Day's, a wrinkled argillaceous schist 

 dips N. 50° E. 73°. North of Bowen pond, and west of H. H. Johnson's, 

 there is an argillaceous mica schist. The strata are bent in many places, 

 but the general dip is N. 88° E., and the inclination is exceedingly vari- 

 able. Almost directly south, near H. B. Schoff 's, the rocks are decidedly 

 arenaceous, and have the character of the hard bands that are inter- 

 stratified with the Calciferous mica schist; the dip is S. 44"" E. 65°. 

 These hard bands extend southward, and outcrop on the road from Indian 

 to Hall's stream. In the extreme northern part of Pittsburg, and di- 

 rectly east of Third lake, there is a small area of the Coos group, that 

 appears to form a synclinal axis in the Huronian. At one point, half 

 a mile from the lake, the dip is S. 34° E., variable, and in places the rocks 

 are so bent and contorted as to suggest that this basin of newer rocks 

 has been compressed by the older and harder surrounding Huronian. 



These are the chief outcrops of the Coos group in Pittsburg ; but there 

 are still two outcrops in the south part of the town that deserve notice. 

 Between the church and the road, going north to D. Blanchard's, the 



