country about the Montmorenct. 183 
aspect, and also in position, (relatively to the river and to the 
gneiss,) to the conglomerate already mentioned—but differ- 
ing frourit in position relatively to the incumbent limestone 
in this—that between the [supposed] conglomerate now men: 
tioned and the superior limestone, and in immediate contact 
with both, gneiss appears—gneiss being also beneath this 
[supposed] conglomerate, in’ horizontat continuation of that 
surface which is the bed of tbe river—whereas in the case 
first mentioned, gneiss is under, mot above the bed of con- 
glomerate. 
In the present nearly vertical state of the cliff it is not prac- 
ticable to descend sufficiently near the subject of inquiry to 
ascertain whether the masses of gneiss which are above the 
conglomerate be peaks of their main rock protruding through 
the conglomerate, or whether they be boulders. If the lat- 
ter, their situation is peculiar in this—that they are imbedded 
the limestone and project throug! its main mass and not 
through its Dédris. The subjacent conglomerate, from its 
aspect and the conformity of its position to that of the oppo- 
site conglomerate, would appear to have been a portion of 
the same bed, as much as the opposite strata of limestone 
now divided by the Montmorenci scem to have been formerly 
united—as much also as the opposite shaly banks which form 
the ends of the curve that includes the fall and are now se- 
parated by a bay of the Saint Lawrence, seem to have been 
once connected. 
These masses of gneiss. are represented in No, 4, at the 
Jetlers a. aca. The summit of the limestone is covered 
with a dilavial deposit containing throughout its mass and 
scattered over its surface boulders of granite, gneiss and 
quartz. On both sides of the river are fonnd grape shot aud 
other projectiles ; vestiges of the military operations conduct+ 
ed near these falls by Wolfe and Montealm. 
The sand of the Moutunoreuci is lange grained and angular 
with fine grained rounded black jrou savd iy suaall proportion, 
Xx mixed 
