272 J. D. Dana on the Quartzite, Limestone, etc., 
bedded kind, and in its upper part it contains, at intervals, some 
streaks of black and white mica, thus showing its relations to 
the overlying schist. The dip of the rocks conform to that 
of the limestone not far distant, and there is no reason to 
doubt that the quartzite, with the other crystalline rocks, 
overlie conformably the limestone. 
t Falls Village, the limestone outcrops above the river at 
the falls and over the plains adjoining. Just above the falls, 
on the west side, there is an outcrop of well characterized mica 
schist; and half a mile to the northwest the schist forms a 
ridge, with limestone outcropping in its lower slopes from 
beneath the schist, both rocks having a dip of but 15° to 20°. 
The mica schist contains small garnets, and some of its layers 
abound in crystals of staurolite. This locality of staurolite was 
mentioned to me by Dr. Stephen Reed, of Pittsfield, as well as 
that at Bear’s Den in Sheffield. 
d. Rutland, Vermont, and Graylock in Northwestern Massa- 
chusetts. 
Vicinity of Rutland.—I have not attempted to give the Rut- 
land region a careful study, but have made some observations 
of interest bearing on the relations of the same to that of 
Great Barrington. 
On the eastern border of the Rutland limestone, just east of 
eo and hydromica slate 100 yards off. Part of the quartzite 
ooks like gneiss, owing to streaks of silvery mica (hydrous 
= ?) in largish scales. Another part is a coarse conglom- 
era 
The rocks in the Rutland ridge, excepting the massive 
quartzite, are well stratified, and have a dip to the eastward 
corresponding with that of the Rutland limestone and appar 
ently lying over it. I found no vertical section of quartzite 
and limestone near Rutland, showing positively that the quart 
ite with the hydromica and chlorite slates were uppermos 
But the dip of the rocks at the nearest outcrops was the same 
with the limestone; and at one outcrop of the limestone, the 
