262 
It would naturally be supposed that the watershed is at the highest 
point, namely, at Weed Patch ‘Hill, but this is not the case. It is about 
two miles west of the eastern face of the hills. Most of the streams 
crossed east of Weed Patch Hill flow to the southeast and empty into 
Salt Creek several miles below the place where it is crossed by this sec- 
tion. The location of the watershed, perhaps, gives a clue as to the posi- 
tion of the rocks that once covered this region, which is now an excellent 
example of a completely dissected plateau. 
This last section is typical of the Knobstone north of White River. 
The limestone has pushed farther to the west, leaving a wide area covered 
by the Knobstone, most of which is the muddy sandstone. The sections 
south of White River are also typical for that region. The St. Joseph 
section has very little sandstone exposed and the shale greatly pre- 
dominates. 
A glance at the map will explain why it is there are so many hills in 
_the north in the Knobstone group; it is because of the thickness and wide 
distribution of the sandstone. 
Nores on InpranAa GrEotocy. By J. A. PRICE. 
In connection with the field work in geology at Indiana University 
during the last season the distribution of a strip of limestone, usually sur- 
rounded by outcrops of the Knobstone group and lying east of the main 
mass of the Lower carboniferous limestone of Indiana, was in part out- 
lined. It is with this unconformity that this paper deals. } 
In the Report of the State Geologist for 1896, page 391, a strip of 
limestone commencing at Limestone Hill, eight miles southeast of Bloom- 
ington, and extending east of south through Heltonville to and probably 
beyond Fort Ritner, Lawrence county, is referred to. 
Without attempting to solve the conditions under which this lime- 
stone was laid down, it is desired to touch upon the extent and relative 
position of this limestone strip and the Knobstone north and south of the 
points referred to in the report. 
In sections 26, 27, 34 and 35, township 4 north, 2 east, Washington 
County, between Twin Creek, which flows north through sections 35, 36 
and 25, and the East Fork of White River, which flows south through 
