56 PROCEEDINGS OF THE GEOLOGICAL society. [June 16, 
top of the precipice. The amygdaloid beneath, bemg friable and 
much fissured, falls away in a slope from the base of this wall, and 
the sandstone in some places forms a continuation of this slope, or is 
altogether concealed by the fallen fragments of trap. In other places 
the sandstone has been cut into a nearly vertical cliff, above which is 
a terrace of fragments of amygdaloid. ' 
Northward of Cape Blomidon, the north-westerly dips of the 
sandstone and trap cause the base of the former to descend to the 
sea level, the columnar trap, which here appears to be of increased 
thickness, still presenting a lofty cliff. Southward of the Cape, on 
the other hand, the amygdaloid and basalt thi out, until the red 
sandstones occupy the whole of the cliff. It thus appears that the 
trap at Blomidon is a conformable bed, resting on the sandstone, 
exactly as in some places already described on the opposite shore. 
The coast section between Blomidon and Horton, as seen near 
Perean River and Bass Creek, and at Star’s Pomt, Long Island and 
Bout Island, exhibits red sandstones, with north-west dips at angles 
of about 15°, and precisely similar in mineral character to those of 
Blornidon, except that near Bass Creek some of them contain layers 
of small pebbles of quartz, slate, granite, and trap. The whole of 
these sandstones underlie those of Blomidon, and resemble those 
which occupy the long valley of Cornwallis and the Annapolis River, 
westward of this section. In this valley, the red sandstone, in con- 
sequence of its soft and friable nature, is rarely well-exposed ; but in 
a few places in Cornwallis where I observed it, it has the same dip as 
on the coast. The comparatively high level of the sandstone, where 
it underlies the trap, shows that the present form of this valley is in 
great part due to denudation ; and the trap itself must have suffered 
from this cause, smce fragments of it and of the quartzose minerals 
which it contains, are frequent in the valley of Cornwallis, and along 
the base of the slate hills to the southward. 
We may now consider the relations of the red sandstone of Corn- 
wallis to the other formations boundmg it on the south. Near 
Kentville, seven miles westward of the direct line of section from 
Blomidon to Horton, the red sandstone with its usual north-west dip, 
rests against clay-slate having a high dip to the N.N.E., and be- 
longing to a series of similar rocks apparently equivalents of the 
Silurian system. In tracing the boundary of the slate eastward of 
this place, along the south side of Cornwallis River, its junction with 
the red sandstone is not again observed ; and at Wolfville the slates 
support hard grey sandstones, composed. of the materials of granite, 
with some beds of brownish sandstone. These rocks were observed 
in one place to dip to the north-east, and m another to the N.N.W. 
They are separated from the red sandstones of Bout and Long Island, 
and Star’s Point, by a wide expanse of marsh, and by the estuary of the 
Cornwallis River. In Lower Horton, and between that place and 
Halfway River, grey sandstones, similar to those of Wolfville, are 
seen to support black shales and dark sandstones, with Lepidodendra 
and other fossil plants of carboniferous forms, and dipping to the 
N.E. N. & N.W. 
At Horton Bluff, at the mouth of the estuary of the Avon River, 
