216 Observations on the south side of Ontario Valley. 
In viewing the river from Lewiston upwards, the whole dis- 
tance is very much of a similar character to within a mile 0 
whirlpool, is the only exception to the above features: here 
the river is deep, and two or three times the common width. 
Owing to the easy disintegration of some of the rocks, 
the ravine is wider in some places than others. About a 
mile above the whirlpool, the rayine through which this vast 
body of water dashes along, is so narrow, that a man stand- 
ing on the brink of the precipice on the American side, can 
throw a stone across the stream. If the falls were once at 
this place, why is no trace left behind ? Or will it be said 
that a pool 240 feet deep was here, and that the rocks falling 
from the shores filled it up again? The narrowness of the 
chasm forbids this supposition. : 
Immediately below the whirlpool, the ravine grows nar~ 
rower as you descend towards the water, and here this mighty 
stream glides smoothly, though swiftly, through a channel of 
but little over 100 yards wide. The firm rocks which form 
either shore, are evidently still in place. The cataract, if it 
ever fell] here, fell far and on a very narrow 
space. - : 
cross section of the chasm and stream here, would be 
something like this. 
: MPMI eecthness of the rocks on each side would indicate, 
that while the ch eae 
ed 
annel was less deep than at present, the wa- 
ter flow Labove them, and the surface of the stream was twe 
or three times its present width, 
