12 The American Geologist. July, 1897 
that it is not so long and the fold is not so sharp. Its east- 
ern termination as a well marked fold is in 12 N., 12 W., 
section 15, not far east of Indian creek. In this region it is 
not a prominent feature, the strata dipping to the southward 
at angles of only 8-10 degrees. 
The fold which is by no means well marked runs from sec- 
tion 15 to the southwest, parallel to the Middle Fork of Red 
river and is cut by that river three-fourths of a mile north of 
Settlement postoffice. At this place the strata in the bluff 
at the west side of the river dip 15 degrees southward, and 
are apparently slightly faulted. 
The low south dips continue to the southwest. The axis of 
disturbance is cut by Archie's fork of Red river a mile north 
of Clinton, in 11 N., 14 W., section 10, the southeast quarter, 
at which place the beds dip 10-12 degrees south and are 
faulted, though the amount of displacement is probably not 
more than 15-20 feet. This fault may be seen in tlie sand- 
stone bluff at the east side of the river one mile north of Clin- 
ton. 
From Clinton the fold continues to the southwest to Scot- 
land. Just north of Scotland the strata have south dips of 
10-12 degrees. The axis of the fold extends from 10 N., 15 
W., near the southwest corner of section 5, to 10 N., 16 W., 
the west half-mile corner of section 1, from which place it 
turns slightly towards the south as far as the northwest quar- 
ter of section 16. There turning again to tiie westward to 
sections 17 and 18 where the dip becomes so low that it can 
no longer be traced and where it looses its effect upon the 
topography. 
Effect on the topography of the countri/. By tracing on the 
map the direction of the axis of the Clinton monocline and 
comparing with the direction of the Red river monocline, to 
the south, it will be seen that they are from 6 to 8 miles apart 
and approximately parallel. Though the northernmost of 
these two folds is at no place very sharp, its effect upon the 
drainage and topography is quite marked. From near Settle- 
ment postoflice in 12 N., 12 W., to its western end in 10 N.. 
16 W., it marks very closely the southern face of the main 
range of the Boston mountains (the mountains to the south 
being more properly outliers of the main range than belong- 
