. 
Conglomerates with Gneiss, Talcose Schists, Gc. 379 
with very few distinct strata-seams, and they seem as if only varieties of 
same rock. 4 
6 c d 
a, mic q kk ; 5, 6, conglomerate alternating with tale schist; c, tale schist ; 
d, gneiss. ; 
To show that the gneiss sometimes lies above the quartz and the schist, 
we give the following section, Fig. 5, only a few rods long, tak 
easily accessible locality, on the east side of the mountain; where, as we 
shall shortly see, the same rocks occur in juxtaposition. In the road 
from Ludlow to Mt. Holly, and near the line between the two towns, a 
small stream has cut a gorge, 40 or 50 feet deep, through a ledge of 
quartz rock. On the west side a trap dyke occupies a considerable part 
of the face of the rock, though more or less worn away. Talcose schist 
succeeds the quartz rock on the west side, dipping beneath it at a high 
angle. But on the east side, and lying upon the quartz at a less dip, is 
distinct gneiss, with more of feldspar than is usual in the Green mountain 
"gneiss, The section below will give an idea of these facts, fig. 5. 
More than nine-tenths of the pebbles in the Wallingford conglomerates, 
at granular, : hyaline quartz. 
apes : 
veritable gneiss ; and perhaps the gneiss pebbles may all have thus orig- 
ated. Th of f : 
@ are of opinion that all the feldspar pebbles, as well as the narrow 
