456 GEOLOGY OF CENTRAL WISCONSIN. 



In western Dane, the descent is almost entirely towards the south, 

 but in the center of the county the dip of the strata begins to veer 

 eastward, and the surface slope corresponds. On the west side of this 

 county, again, in the valley of Sugar river, the topography is more 

 abrupt than elsewhere, owing to the entire absence of the drift ma- 

 terials; in the center we find the broad southeast valley of the Catfish, 

 with its chain 01 lakes lying in N. E. -S. "W. valleys, and its morainic 

 glacial drift; w T hilst further east still we find a more nearly level 

 drift-covered region, sloping gradually eastward. 



