140 B. SHIMEK 



feet above the river valley, and the shell stratum (which is here very rich 

 in fossils) extends about 3 feet higher. It dips down toward the west at 

 such an angle that it would connect with the shell stratum at E, which is 

 about 100 feet lower. The same layer may be traced more or less indis- 

 tinctly to O, where there is a cut about 20 feet deep. The shell stratum 

 rises to about 8 feet above the roadbed (here about 200 feet above the 

 river valley), but fossils are not abundant. The remaining exposures along 

 this road are formed by the road cutting the smaller, lateral lobes of the 

 greater ridges. The letters apply to the extent of road from bend to bend, 

 not to individual exposures. At the southern bends in the road are the high 

 points, the road sloping down to near the bases of the ridges to the north. 



Fossils are found in most of the little exposures (which in but few cases 

 exceed 1 5 feet in height) along the road, but they are nowhere as abundant 

 as in some of the exposures along the bluff fronts. The exposures which are 

 represented on the map, but not lettered, are nonfossiliferous. 



B. Shimek. 



