Mineralogy and Geology of Nova Scotia. 269 
Chabasie in rhombic crystals, transparent and colorless, also 
of a beautiful orange-yellow color, occurs at this place in the 
fissures of the amygdaloid. The crystals present brilliant glassy 
faces, and are very large, frequently measuring an inch across 
each rhombic plane. 
Agates of various kinds, jasper and chalcedony, also botryoi- 
dal cacholong, exist in the columnar rock above the accessible 
base of the precipice: they may be picked up in imperfectly 
polished masses among the loose rocks on the shore. A vein 
of magnetic iron ore, about a foot wide, was also noticed entering 
the superincumbent rock. 
On our return to this island and the neighbouring coast in 1829, 
the effects of the past winter were strikingly manifest; for 
many of the lofty mural precipices, which before constituted the 
most extraordinary and imposing features of this coast, were 
brought low, and reduced by their downfall to mere masses of 
débris heaped up on the seashore. This was peculiarly the case 
on the west side of Partridge Island, from which the immense 
mass of rock had fallen, that before bulged out in the most ter- 
rific manner, and to a great height. But these catastrophes are 
common in this quarter, and are owing to the violence of the 
tides and currents in the Bay of Fundy, driven fiercely by 
the winter blasts. 
The fallen masses on Partridge Island, besides presenting us 
with a rich variety of the minerals we have already described, 
disclosed one or two substances hitherto unobserved in Nova 
Scotia. They are phosphate of lime, semi-opal, and the variety 
of apophyllite, known as albin. The first is met with in very 
brilliant, transparent, hexahedral prisms, with their lateral and 
terminal edges, and sometimes solid angles, replaced ; or in regu- 
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