Geology of Canada. it 
lithological characters, shows that they are on opposite sides 
of a syncelinal. 
On the line of section, about a mile beyond where the Sutton 
dolomites would cross, occurs another belt of dolomite associated 
with soapstone and green chromiferous talc. In its strike we 
while on the southeast is a narrow band of green serpentine. 
Another dolomitic band occurs a little farther, associated with 
green tale, serpentine and soapstone. It has been followed for a 
considerable distance, and in one place consists of soapstone with 
patches of dolomite, which in the distance of about three hundred 
yards on the strike, passes into a band of dark green serpentine 
with soapstone. At other places in the strike, the soapstone is 
associated with chromic iron, and in one place a bed of magnesite 
with chromiferous tale. ‘These appear to constitute a trough, and 
the interval is filled with coarse quartzose chloritic slates, occa- 
sionally epidotic, with imbedded crystals of magnetic and specular 
iron; mica and feldspar are not unfrequently met with. 
Following this, the rocks for the next five miles are coarse 
chloritic micaceous schists, often feldspathic, passing into gneiss, 
and in some places, very quartzose. About three miles on the 
line of section, is a band containing tale and calcareous spar, the 
latter making a considerable portion of the rock, which is staine¢ 
green with oxyd of chrome. East of this the rock is more feld- 
spathic and contains small crystals of tourmaline. These meas- 
feet above the St. Lawrence. A valley in the line of the chro- 
miferous calcareous rocks divides the mass into two ridges, one 
of which dies down very while the other crosses the line 
of section and is lost miles farther north; this region still 
of the western portion. 
On the eastern side of this range occurs a belt of soapstone and 
has been traced at intervals a distance of twen- 
west borders of the Missisquoi. On the west 
by a quartzose chloritic band, asseciated with a 
licious rock of a corneous lustre and fracture. In 
the strike of the serpentine further north, dolomite is found. On 
the east side of the river, at the distance of a mileand a half from 
the former, another serpentine band occurs; the interval is filled 
With slates and gray quaitz rock, with some beds of chloritic and 
epidotic rocks and a curious jaspery quartz rock containing epi- 
This band of serpentine has been traced one hundred and 
thirty-five miles from the province line across the Chaudiére, to 
the township of Cranbourne. In some parts, it seems to pass into 
cond Senres, Vol. IX, No. 25—Jan., 1850. 3 
