A List of Minerals and Organic Remains. 79 
only seen in time of low water; at and near Point Henry, 
close to Kingston, U. C.; and in many places on the north 
coast o ke Huron. [In the last named locality it 
rests directly, in several instances, on a beautiful snow- 
white transition quartz, which occupies the main shore in 
steep hills, four hundred and five hundred feet high, from 
near the French River to the River Le Serpent, (70—80 
miles.) The immediately subjacent rock, at La Cloche, 
and on the isles north of the Manitoulines, in the same 
lake, is sometimes a highly inclined greenstone. Near 
Montreal, it overlies, directly, crystalline trap, containing 
augite, zeolite, mica, feldspar, &c. 
ut ordinarily, a sandstone, grey wacke, or a conglome- 
rate of quartzose, or calcareous materials is interposed ; also, 
in horizontal layers. It is to be remarked, (en passant,) 
that much the greater part of the grey wacke of Lower Can- 
ada does not belong to this deposition; but is conformable 
to the mica-slate, gneiss, &c. ranging along the north shore 
of the St. Lawrence, between Quebec and the river Sa- 
gu 
ton, where the inclined rock is milky quartz, subordinate to 
gneiss. Here the nodules are milky quartz, very large, 
asuilly with blunted angles, intermixed with fragments of 
the schorl so abundant in the gneiss, and imbedded in 
green and grey pulverulent calcareous matter, which grad- 
ually becomes compact, upwards, and free from nodules. 
It is also exemplified on the west side of the river Montmo- 
diameter ; the cement being calcareous and powdery. In 
Lake Huron, the same fact occurs on an extensive scale 
wan the crystalline snow white quartz rock before allu- 
ed to, . 
In numerous and widely prevailing examples, this stra- 
tum receives its materials from distant sources, which are 
hot to be traced, or only with a certain degree of probabil- 
ity. Frequently the cement is wanting, or is argillaceous. 
he sandstone, which is beneath the limestone from near 
Kingston, U. C. to St. Anne’s, twenty-six miles north-west 
