52 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [June 16, 
hard grey conglomerates, grey and reddish grits and dark shales, 
with fossil plants; but marine limestones and gypsum appear only 
on the southern side of the synclinal axis, or where the beds again 
dip toward the hills. It results from this arrangement, that in the 
district now under consideration, the new red sandstone, with general 
southerly dips, meets and overlies lower carboniferous rocks, usually 
dipping to the northward ; and that those portions of the carboniferous 
system which contain limestones with marine shells, gypsum and the 
largest proportion of reddish sandstones, usually occur very near the 
junction of that system with the new red sandstone. 
In the section of the Folly River, the new red sandstone meets the 
main body of the carboniferous rocks about five miles from the shore. 
At this place it is coarse and sometimes pebbly ; and near its junction 
with the older formation its dip increases till it amounts to 50°. 
Westward of the Folly River, the belt of red sandstone gradually de- 
creases in width, and begins to contam im its lower part thick beds 
of red conglomerate, made up of fragments of the neighbouring older 
rocks united by red sandstone. 
In the banks of Economy River, seventeen miles westward of Folly 
River, the red sandstone and conglomerate, which near the shore dip 
to the southward at a low angle, assume an undulating arrangement 
as they approach vertical, hard, brown and grey grits, and shales of 
the carboniferous system. After passing these vertical rocks, red 
conglomerate and soft red sandstone, with a south-west dip, again | 
appear in the section for a short distance, and are again succeeded b 
vertical carboniferous grits and shales, which continue to the base of 
the hills. Ata short distance eastward of the Economy river, the car- 
boniferous rocks contain a bed of limestone, with Producta Martini 
and other fossil shells. 
In Gerrish’s Mountain, six miles west of Economy River, the red 
sandstone and conglomerate are overlaid by amygdaloidal trap, and 
having been protected by it from denudation, rise into an emmence 
nearly 400 feet high. At Indian Pomt, the southern extremity of 
Gerrish’s Mountaim, the trap and red sandstone form a bold precipi- 
tous cliff, and are continued along the picturesque rocky chain of the 
Five Islands, in two of which the red sandstone is seen to underlie 
the trap. 
3. North shore of Mines Basin, from Five Islands to Cape Sharp. 
Between Five Islands and Swan Creek, ten miles distant, an ex- 
cellent coast section, often rising into lofty cliffs, shows the new red 
sandstone and trap as well as the underlying carboniferous strata. 
At the mouth of Harrington River, opposite the Five Islands, the 
carboniferous rocks approach the shore very closely ; and as seen in 
the west side of the river, consist of black shales and dark-coloured 
sandstones with Flabellaria and other fossil plants. They dip at 
high angles to the south, and are met by the new red sandstone dip- 
ping gently to the southward. The sandstones of the newer forma- 
tion here contain little conglomerate, and are variegated by numerous 
greenish bands and blotches. They occupy the shore for some di- 
