GEOLOGICAL PAPERS. 103 



cessive, amounting to fifty feet per mile, which brings the lower flint 

 beds to the river valley at Cedar Point. 



At SaflPordville, the Americus stone is a few feet above the water in 

 the river and the Cottonwood Falls stone is in the top of the hills be- 

 yond the bluff. A better exposure of nearly the same strata is found 

 at Elmdale mills, fifteen miles farther west, where section No. 3 was 

 obtained. The Americus stone is under the river at this place. 



While considerable attention has been given to the paleontology 

 of the district, my collection of fossils is too incomplete and too many 

 are unidentified to warrant publication at this time, and such reference 

 as I have made to fossils has been done only when they appeared to 

 be especially characteristic of the formation and might aid in its 

 identification. 



