Remarks on the environs of ae Bridge. 253 
The upper strata are limestone, and are here inaccessi- 
ble, but can be better investigated at the second falls. A 
brown, compact conchoidal ine is the first; the next is 
brown, rather crystaline, and fui! of shells ofa pearly lustre ; 
a third is bluish and contains fewer shells. Broader layers 
succeed, having black flint nodules imbedded. 
The order of the whole succession of strata is as follows : 
——— Limestone and bluish Shale alternating in this stratum. 
—— = 
3h i Ferruginous Sandstone. 
| Greyish blue Shale, as at the falls of Niagara—very dusky 
4+ A white Clay—giving not the minutest clfervescence in 
acids. 
Dark red Sandstone ; highly ferrnginous—in many parts 
having globules of black metallic lustre. 
As No. 10, but of lighter colour. 
As No. 10. 
Do. but stratified thus 
i Bright red ferruginous Sandstone, with yellow spots, and 
| circlets on the fracture surfaces. It isa compact mass.— 
« Nos, 7, ahd 8, have each one line of division. 
The surface of some of the sandstones, as No. 10, is im- 
pressed with the figure of confused bunches of twigs or 
branches, having transverse ribs at regular distances, like 
the bamboo cane. No. 6, contains a few pebbles, and ma- 
ny elongated univalve shells. Among the debris of this 
chasin, a ferruginous puddingstone of quartz pebbles occurs, 
but I could not find it in position. 
The banks of this river are highest at Carthage bridge. 
From their gradual subsidence towards the lake; and from 
their higher parts being covered with soil, little limestone is 
seen below ; while above the first fall, (excepting the low- 
est stratum,) no other is met with—but the successive bluffs 
which it forms are so shivered and moulded that their strati- 
Worn. PE No. 2: 33 
