182  £Wéi£liam Green’s Notes on the 
The amphitheatric Section in the middle of which are the 
Falls of Montmorenci appears to consist at both its outer 
(or southern) ends of a shaly rock exhihiting a broken 
stratification dipping to the south inclined at an angle of 43°. 
as represented in No. 2, and at its northern ends abutted on 
gneiss which emerges from beneath the bed of the Saint 
Lawrence. 
The gneiss supports a mass of limestone, in some parts. 
more, iu others rather less than fifty feet in thickness, stratified 
horizontally. 
A Section of this mass bearing northerwards with # sinuous 
course contains the River Montmorenci: This stream is re- 
ported to be from its source to its mouth a torrent, and i is as- 
certained to be so in many miles of the southern portion of 
its course. It enters the St. Lawrence at Montmorenci, there 
forming the well known Cataract ofthat name. At low wa- 
ter in the St. Lawrence, these falls are two hundred and twen- 
ty-eight feet high. 
Ata point north of the Bridge and within thirty yards of 
it, on the east bank of the Montmorenci, at the level of 
high water there, one horizontal bed of conglomerate a foot 
thick rests immediately upon the gneiss and immediately 
under the limestone. It contains pieces of white and of 
bluish white translucent opaline stones, rounded and varying 
in size from that of aduck-shot tothat of a bean. This bed 
is parallel to the limestone, and bears to the strata of gneiss 
the relative direction represented in No! 5 
At another point South of the Bridge, on the West Bank, 
diagonally opposite to the situation last described and distant 
from it about 100 yards at the level of high water in the Mont- 
morenci there appears the edge of a bed of Rock, similar in 
aspect, 
* To those who know the place, it need not be said that the tide has 
no influence in the Montiorenci. 
