1847.| DAWSON ON THE NEW RED SANDSTONE OF NOVA SCOTIA. 55 
Many beautiful crystallized minerals occur in the trap rocks of the 
sections described. The masses near Moose River contain cavities 
coated with opake white varieties of quartz, in stalactitic and other 
imperfectly crystalline forms. Opposite the Two Islands, the fissures 
of the trap are lined with fine crystals of analcime and natrolite ; and 
‘the fissures and vacant spaces of the trap conglomerate in the same 
neighbourhood contain a reddish variety of chabasie in rhombohe- 
drons, often of large size. At Partridge Island, stilbite, calcareous 
spar and quartz, in various states, are the prevailing minerals; they 
occur chiefly in the amygdaloid and tufa, im fissures which also 
contain chabasie, heulandite and other zeolites, though in smaller 
quantity than the mimerals above-named. 
4. Blomidon and the Valley of Cornwallis, on the south side of the 
Bay of Fundy. 
Blomidon is the eastern termination of a long band of trappean 
rocks, forming an elevated ridge, named in the greater part of its 
length the North Mountains. This ridge is about 123 miles in 
length, including two insular portions at its western extremity, and 
does not exceed five miles in breadth, except near Cape Blomidon, 
where a narrow promontory, terminating in Cape Split, extends to 
the northward. The trap of the North Mountains presents to the 
Bay of Fundy a range of high cliffs, and is bounded on the inland 
side by soft red sandstones, which form a long valley separating the 
trappean rocks from another and more extensive hilly district occupied 
principally by metamorphic slates and granite. The trap has pro- 
tected the softer sandstones from the waves and tides of the Bay, 
and probably also from older denuding agents; and where it ter- 
minates, the shore at once recedes to the southward, forming the 
western side of Mines Basin, and affording a cross section of the 
North Mountains and the valley of Cornwallis. 
At Cape Blomidon, the cliff, which in some parts is 400 feet in 
height, is composed of red sandstone surmounted by trap. The 
sandstone is soft, arranged in beds of various degrees of coarseness, 
and is variegated by greenish bands and blotches. It contains veins 
of selenite and fibrous gypsum, the latter usually parallel to the 
containing beds, but sometimes crossing them obliquely. I found no 
fossils in it: it dips to the north-west at an angle of 16°. Resting 
on the sandstone, and appearing to dip with it to the north-west, is 
a thick bed of amygdaloidal trap, varying in colour from grey to dull 
red, but in general of greyish tints. It is full of cavities and fissures ; 
and these, as well as its vesicles, are filled or coated with quartz, in 
different states, and with various zeolites, especially heulandite, anal- 
cime, natrolite, stilbite and apophyllite, often in large and beautiful 
masses of crystals. In its lower part there are some portions which 
are scarcely vesicular, and often appear to contain quartz sand like 
that of the subjacent sandstone. Above the bed of amygdaloid is a 
still thicker stratum of crystalline trap, precisely similar to that of 
Partridge Island, and like it having a rude columnar structure. 
The columnar trap of Blomidon, in consequence of its hardness 
and vertical joints, presents a perpendicular wall extending along the 
