Essay on the Transition Rocks of the Cataraqut. 81 
was laid on it. What long periods may therefore have elapsed in 
time whilst the transition limestone of the Cataraqui obtained its 
f . : 
present magnitude. 
6 ft.—soil and debris. 
10 in. 
2 ft. 
1 ft. 10 in, 
This vast bed is extremely solid and hard, as indeed are 
5ft. J all the rest, excepting two or three at the bottom, which are 
Gin. | of a lighter color and softer; some near the top have a very 
thin layer of clayey earth interposed. 
3 ft. 92 in. 
————$———— 
If Sin. All these strata appear to be nearly 
ia. ; ‘horizontal, at least, they follow the usual 
tendency of the Cataraqui limestone. 
This section réaches to about two or three feet below the level of 
the lake. No appearance of shells or organic remains was observa- 
ue M cutting it, and if it had been necessary to have carried ita 
litle deeper, it would most probably have Jaid bare the subjacent 
granitic aggregate. 
Vou. XX.—No. 1. 11 
