AG GEOLOGY OF OHIO. 
becomes gradually more mixed with clay, and is less evidently stratified. It is also 
forked and channeled toward the south, and extends east and west for a number of 
miles. Further south the slope is gentle, and the ridge is soon lost in a flat surface. 
This subordinate ridge is not higher than the adjoining knolls or the general level. 
In approaching it from the north, there is a sudden descent before reaching it; there 
is also a Swampy tract along each side. On the top of this ridge of gravel, and also 
on the slopes, are many large bowlders; one, which lies exactly on the summit, 
measures 4 by 23 feet. This is of diorite. Many others also seen on the ridge are of 
limestone, the Waterlime predominating.” 
The following section, taken by Mr. Winchell, will serve to illustrate 
the arrangement of materials in the kames he has described : 
SECTION OF WABASH RIDGE AT WAPAKONETA, AUGLAIZE COUNTY. (Winchell.) 
== 
oy 
a 
= 
1. Rusty hard-pan, 1 foot. 2. Unassorted gravel and sand, 1 to 4feet. 3. Damp sand, with some gravel 
1 foot. 4. Unassorted gravel and sand, with some stones a foot in diameter, 1 to 4 feet. 5. Stratified sand’ 
the beds broken by lenticular beds of unassorted sand and gravel, 1 to 4 feet. 6. Unassorted gravel and 
sand, 4 feet. 7 Unassorted sand and gravel, 2 feet. 
SECTION FROM GRAVEL KNOLLS AT ST. JOHN’S, AUGLAIZE COUNTY. 
7 YY, 
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ty 
03%, 
7 
SATE rape Se) 
= DUI 
\Yyhae 
WARAERR UREN 
=k \\ Wt 
Sn Sas ews ewes eg [teen mee eee 
Non SMSn ie 
SANAY OL eS 
A MESES RR 
SAY WSs RIE 
SS es aeons, x YY AN VANS \\ AN NY 
Se MAO RY 
SSS 
TSN 
= 
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1. Hard-pan, 1 foot. 2. Rusty sand, 1 foot. 3. Gravelly hard-pan, 1 foot. 4. Clear sand, 6 inches: 
5. Stratified sand, 2 feet. 6. Gravel. 7. Coarse and fine sand in distinct beds, exposed, 8inches. 8. Sand, 
exposed, 4 inches. 
DRAINING OF THE INLAND SEA. 
On a former page I have referred to certain waste-weirs through 
which our great inland fresh-water sea was drained off toward the Ohio 
and Mississippi long before the present outlet was established. Some of 
those which occur in the State of Ohio were incidentally described in 
Vol. I., Part L., p. 48, of this report, where they are cited as interesting 
features in the topography. 
