in the vicinity of Great Barrington, Mass. 51 
Glendale, which continues uninterruptedly eastward to Stock- 
bridge; it adjoins the slate west of it (V") conformably ; it 
loses its steep dip and becomes undulating over the Glendale 
and Stockbridge region, dipping variously but generally at a 
small angle to the eastward. 
The slate V’, just west of Glendale, whose position is indi- 
cated by @ on the map, continues southward, crossing the 
Housatonic at the northwest bend in the river; and, with the 
limestones A! on its east side and A? on the west, constitutes a 
ridge, a’, which stretches southward to Monument Mountain, 
stopping at the elevated plain (200 feet or more above the river) 
of Smith’s farm (Sm on the map). The strike of the mica slate 
at the bend is N. 20° W., varying, on going westward, to N. 10° 
E., with the dip 70° to 80° to the eastward; the western part is 
very rusty and decomposing. 
Now near the Old Furnace (fig. 8) the limestone A® goes be- 
neath the mica slate V*, at a small angle. This limestone hence 
must go beneath this more steeply dipping schist, since it is a 
continuation of V*, and it must emerge to the eastward either 
im the limestone A? or in AL. But the nearly vertical dips of 
V* and V! (fig. 5), and the conformable yet mostly small-dipp ing 
limestone over the intermediate region, show that V? and V* are 
independent synclinals, and therefore,that the limestone is all 
one and the same stratum rising in a series of anticlinals, as 
illustrated in the section. : 
Following the limestone A? south to Monument Mountain it 
appears finally to pass beneath the schist, though the covering 
of soil prevents a satisfactory examination of the junction. 
n the steep slope rising above the Smith farm plateau on 
the south, the schist, where it outcrops, dips westward, which is 
unusual in Monument Mountain, and is apparently connected 
with the synclinal of mica slate that here commences. on 
this plain ‘in the schist (near I, map) there are two very thin 
generally very small (25° and less) and very various as about Glendale. Lenox 
Mountain is Tcbabl: the course a synclinal, like the ridge @ a’ in which it 
' Seems to begin, and like Tom Ball. 
