168 
Butler, and in each case the sections were intended to be fair averages 
of the slopes. The following data were obtained as an average result of 
the sections made in each valley. 
BUTLER RAVINE. 
Direction of trend, north, 70 degrees west. 
Inclination of south slope (i. e., slope facing south), 25 degrees. 
Inclination of north slope, 28 degrees. 
Depth, approximately, 260 feet. 
CROWE RAVINE. 
Direction of trend, north, 80 degrees west. 
Inclination of south slope, 22 degrees. 
Inclination of north slope, 2645 degrees. 
Depth, 260 feet. 
HAPPY VALLEY RAVINE. 
Direction of trend, north, 40 degrees west. 
Inclination of southwest slope, 21 degrees. 
Inclination of northeast slope, 26 degrees. 
Depth, approximately, 255 feet. 
CLIFTY VALLEY. 
Direction of trend, north, 10 degrees west. 
Inclination of west slope, 28 degrees. 
Inclination of east slope, 29 degrees. 
Depth, approximately, 270 feet. 
(Reference to the accompanying figures will aid much in appreciating 
the variations in the slopes.) 
These cross sections indicate a decided variation in the rate of weath- 
ering on the two slopes, in the cases under consideration, where the direc- 
tion of valley trend is from: east and west to southeast and northwest 
approximately, but that there is little variation where the valley trends _ 
approximately north and south. Sections taken of other valleys extending 
in a general north and south direction verify the latter statement. 
