180 THK ICK AdK IN CANADA. 



It coiiLaiiis ii few sliells of Tclliiut (IrditltnuUva iiml Leila 

 f/ldrialiti, and a little inland, at Ueigeion river, it also 

 contains Ccrdiinn Islnndiciiiu, AsUirfc eUiplica, a>:d lilijin- 

 cho>ii'//(f psiffccra. It resembles some of the beds seen on 

 the south side of the river St. Lawrence, and has also 

 much of the aspect of the Leda clay, as developed in the 

 valley of the Ottawa. On tliis clay there rest in ]»laces 

 thick beds of yellow sand and gravel. 



At Tadoussac these dei)osits have lieen cut into a 

 succession of terraces which are well seen near the hotel 

 and old church. The lowest, near the shore, is about ten 

 feet high ; the second, on which the hotel stands, is forty 

 feet; the third is 120 to loO feet in height, and is uneven 

 at top. The highest, which consists of sand and gravel, is 

 about 250 feet in height. Above this, the country inland 

 consists of l)are Laurentian rocks. These terraces haxc 

 l)een cut out of deposits, once more extensive, in the 

 process of elevation of the land: and the ]>vesent tiat.i oil' 

 the mouth of the Saguenay would form a similar terrace 

 as wide as any of the others, if the country were to 

 ex})erience another elevatary movement. On the third 

 terrace I observed a few large Laurentian boulders, ami 

 some pieces of red and gray shale of the (.Quebec grouj), 

 indicating the action of coast-ice when this terrace was 

 cut. On the highest terrace there were also a few 

 boulders; and both teri'aces are capped with pebbly sand 

 and well-rounded gravel, indicating the long-continued 

 action of the waves at the levels which they represent. 



/diirray Bay, dc. — At Murray bay, Petit Mai bay, and 

 IjBS Eboulements, as noticed above, the system of Pleisto- 

 cene terraces is well developed. On the west side of 

 Murray bay, the Candu'o-Silurian rocks of AVhite point, 

 immediately within the pier, form a steep clill', in the 



