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ship 6 north and 8 east, the highest hills along the eastern face are but 
little over 100 feet. They form the watershed for this section of the 
country. 
East and south of Brownstown, in east-central Jackson County, are 
the “Brownstown Hills.” They are outliers of the hills to the south and 
west. They are separated from the main line of hills to the south by 
the Museatatuck River and two and one-half miles of bottom land; from 
those on the west, by the White River and four miles of bottom land. 
They are a very prominent feature in the topography of this region; 
their greatest extent is six miles from north to south and five miles from 
east to west. They are made up of muddy sandstiones underlaid by clay 
shales and contain in many places considerable quantities of iron 
nodules. The hills in many places are nearly 400 feet above the valley; 
on the east the slope is rather abrupt, with few foothills, but on the west 
the slope is gradual to the White River bottoms. The hills are nearly cut 
through in three places by creeks tributary to the White River. 
From Freetown the hills extend to the northeast six miles near the 
Bartholomew and Jackson county line, thence nearly north across the 
western part of Bartholomew County. Near the above-named county line 
one spur of the hills runs nearly east for three miles, then in a northerly 
direction, forming the foothills in Bartholomew County. The Knobstone 
escarpment is generally not well marked in this county. In a few places 
the slope is gradual; in other places the foothills are five or six miles wide 
and the escarpment is well marked. Without doubt two or three miles 
of these lower hills are partially formed of drift, as was shown by well 
sections obtained in this region; a few places along the west bank of 
Driftwood River there are bluffs 100 feet high. 
The main escarpment varies from 100 to 275 feet above the immediate 
country to the east. The creek valleys in the lower hills are sometimes 
more than one-half mile in width. In the northern part of the county 
in township 10 north and 4 east, there is no distinct escarpment; the coun- 
try gradually becomes more rolling from the east to the west and passes 
into the hills of northern Brown and southern Johnson counties. 
Beginning with Johnson County the real eastern escarpment is coy- 
ered with glacial material. In township 11 north and 5 east, extending 
to Sugar Creek west of Edinburg, the country is gently rolling with an 
occasional bluff on the west side of the creek; in township 11 north, 4 
east, the hills are steeper and more numerous. In township 11 north 4 
