142 R. CHALMERS ON GLACIATION 
on which Cacouna Station (three miles distant) stands, extends back half a mile or more, 
and is bordered by narrow terraces rising to a height of 340 to 345 feet. In new openings 
made for telegraph poles near the station, marine fossils of the common species were 
found. Above the 345 feet contour line here, as at Cacouna, the surface appears to be more 
uneven; terraces were not observed; rolled, water-worn boulders are not so numerous ; 
and the debris, generally speaking, is more angular. 
(4) About half a mile west of Trois Pistoles Station (100 feet high), following the 
Intercolonial Railway ; planed, grooved and striated rocks were seen in the bed of a 
stream, the direction of the striæ being N. 2° W. The grooves, some of which are one to 
two feet wide, and the finer striæ, are all parallel. The rounded faces look to the south. 
On the northward-sloping face of one of the larger bosses, however, other striæ were seen, 
having a course of 8. 35° W., or N. 35° E. Whether the ice which produced the latter 
moved up or down the St. Lawrence valley, or was earlier, or contemporaneous, or later in 
date than that causing the south-to-north striation, could not be determined. No planing 
of surfaces was noticed, and these striæ have, to all appearance, been made by icebergs. 
(5) A few rods to the east of Trois Pistoles Station, another small stream flows down 
the hill side. Just above the main road it falls over a ledge, forming a cascade. This 
ledge is also planed and striated in the direction of N. 10° W., the northern face descending 
abruptly, causing the cascade mentioned. Till rests on the surface of these planed rocks, 
containing boulders which appear to be derived chiefly from local rocks, but a few of 
granite and crystalline schist were also noted. On the road leading from Trois Pistoles 
Station to the back settlements, about a mile from the shore, rock bosses, 450 feet high, 
were seen, planed and grooved in a north-and-south direction, stoss-side distinctly to the 
south, and the nortr side broken off. Glacial striæ were observed in several places in the 
rear settlements up to an elevation of 800 feet. All the rock bosses and east-and-west 
ridges show the rounded faces invariably to the south. On a ridge in the third range of 
lots, striæ were found bearing N. 45° W. to N. 50° W., the difference between these and 
the courses near the shore being due to local inequalities of the surface. No evidence of 
a submergence beneath the sea was sven above the level of 345 to 375 feet. The terraces, 
up to that height, face the St. Lawrence, and an old shore line is traceable here. Below 
this level, well-rounded blocks of gneiss, syenite, granite, ete. evidently Laurentian, 
strew the surface in great profusion. Above it the boulders appear to be more angular, 
with fewer gneissic and granitoid ones, but a larger number belonging to local rocks. 
The general surface is also more uneven, and without those wide, flat expanses charac- 
teristic of sea bottoms. 
(6) On the road leading from Trois Pistoles to St. Simon, glaciated surfaces were 
observed in several places, especially on the sides of the low ridges and bosses. Distinct 
striz could not be found, but planing and grooving denote that the ice-movement was in 
nearly a northerly direction. At St. Simon Station (292 feet high) the upper margin of the 
marine beds was seen to the south, along the face of an escarpment at a height of about 
345 feet. A clear distinction is here discernible between the deposits above and below 
that level, the former containing angular boulders and debris. At the height of 375 feet, 
however, there are indications of an old shore line here, as well as at Trois Pistoles, but 
the angular debris and steep face were seen for about thirty feet below that level in some 
places. The chief terrace at St. Simon is that on which the railway station stands. 
