WOOD COUNTY. 381 
No. 2. The same, except the dark and porous parts are less defi- 
NILE R MPO RMP MINT OME NDC inva teedans rbueaee verona catics sealsnaneracsens Bits 6) shot, 
Limestone; irregular; rather soft, drab, streaked with tor- 
tuous bituminous films; sometimes fine-grained and 
hard; when quarried, comes out in blocks a foot thick ; 
HedsierohitetoOut we lyeninG Mein c.cusjasevanssiesecersesiccescsveises 3 
‘““ 4, Sandstone; banded with blue, gray, and black streaks, 
owing to changes in sedimentation; in three beds......... 1 
5. Limestone; even; drab, with bands of light and dark; 
bedsktounmtorsixeiaches tess. cscs: PACER Eanes CMe CASE 2 
‘“* 6. Irregular; hard and close-grained; crystalline; of a light 
drab, or yellowish-drab color; surface inverted kettle- 
eo 
SIA OSC Meant e celine sce cctsleSecuscualesseatceulsedccsuseisssesbees aeeate Zee 
‘ 7. Irregular; dark drab or brown; slightly fossiliferous; 
ATEMACCOUSMAVERI CULAR EO Ny), anew aneciiteslscinnts waeeeoece cess suees ees ease 
‘* §. Sandstone; in one bed; firm; grains white, rounded, and 
distinct. This bed contains occasional small masses or 
pebbles of silicious rock, much larger than the ordinary 
grains, due either to the chemical confluence of smaller 
grains or to the existence of pebbles of that size in the 
materials which at first formed the rock. So far as ob- 
served, they do not show the rounded condition seen in 
theverainerombhe CeMeralaMmAassais ssecssscasslendecccectsseces ee By FTG 
“ 9. Sandstone; light blue or lead color; its fine grains de- 
posited in irregular, lenticular beds, and separated by 
divisional planes in all diréctions. This is below the 
falls caused by the last (No. 8), and the water runs strag- 
gling over it. Thickness unknown. Exposed.............. ees 
EDO tal ermpOSe deren wineeee coc ainees MALU aloe ceils actos HLS Sune acy 
The principal bed of the Oriskany here is No. 8, which is so persistent 
as to run continuously across the river bed, causing, in a low stage of 
water, a marked change in the river landscape. The unequal erosion of 
the current on the. materials composing this member of the section re- 
veals the effect of currents of water operating in the act of deposition. 
There are distinct lines of bedding, or oblique stratification, seen cross- 
ing the main bed, the water having removed the softer parts, the whole 
being rounded grains of sand. The following sketch will illustrate this 
arrangement of the sand grains. It recalls very forcibly the oblique 
stratification seen in the sand and gravel of the Drift of the present 
day. | 
