502 STRATIGRAPHICAL GEOLOGY. 



in hornblende schist. The soapstone is identical with that at Frances- 

 town, but on account of its hmited area, and sometimes portions of it 

 containing iron, it has not been worked with profit. When attempts 

 were made to work it there were two openings, one nearly east from the 

 school-house, and the other south-east from L. Harris's. The width of 

 the bed was forty-two feet, and apatite, rutile, pinite, and iolite have been 

 found, — the pinite in very perfect crystals. At E. Harkness's, near D, 

 Martin's, N. Putney's, and several other localities, there are coarse gran- 

 itic veins, and graphite above school-house No. 12. South-east from 

 Richmond, in the town of Royalston, particularly at Royal cascade, we 

 have the typical Montalban rocks. In the north-west of Fitzwilliam, ad- 

 joining Richmond, we have an extension southward of the Montalban 

 rocks of Troy ; there are outcrops west of S. W. Keith's, at M. Broad's, 

 N. Howe's, and in many other places. Extending diagonally across the 

 town we have a band of andalusite rocks, apparently an extension of the 

 rocks from Monadnock. They outcrop on the road between Bowker 

 pond and S. Drury's, south of R. Fairbanks's, on the railroad north of 

 the Richmond road, and in the south-west part of the town at G. Rich- 

 ardson's. Except the granitic gneisses that are so extensively quarried 

 near the village of Fitzwilliam, and a few rocks along the railroad, we 

 shall have to regard this as the limit of the Montalban rocks, unless 

 the pyritiferous schists of Rindge belong to this series. 



The Eastern and Western Bands. The eastern band of fibrolite schist 

 differs in many respects from the western, yet in some points they are 

 alike. Most of the rocks of the eastern band are mica schist ; but while 

 many of the rocks of the western seem to be hydro-mica schist, yet there 

 are some that are clearly mica schist. The compact fibrolite, common 

 in the southern part of the western band, is also common in the eastern 

 band, and is one of its marked characters. The fibrous variety is com- 

 mon to both. The rocks of the eastern band are very closely allied to, 

 if not identical with, the range north that includes Mt. Kearsarge and 

 the Ragged mountains. On the other hand there are many points of 

 resemblance between this eastern range and some of the rocks we have 

 described under pyritiferous schists. We have already alluded to an 

 outcrop of rock north of Harrisville, which seemed to be a part of a 

 band that extended south-east into Marlborough; but the Monadnock 



