Prosser — Hamilton and Chemung Series. 



211 



The Chaseville section may be tabulated as follows: 



SECTION OF XXII H. 



930' 





Oneonta sandstone on top of hill. 





\ 



H 5 . 







XI . LTI)<(( (( in neio. 









857' 





H 3 . Ithaca in road. 





275' 





582' 





Covered. 





139' 



Sherburne. 



443' 





Concretionary stratum. 





18' 





425' 





H 2 . Sherburne. 





210' 



Covered. 



215' 



0' 



215' 



H 1 . Hamilton shales. 



Schenevus creek level at Chaseville. 



The above section shows that north of Chaseville, the thickness of the 

 Sherburne and Ithaca formations is between 505 and 715 feet. 



XXII B x . On the south side of Schenevus creek, three-quarters of a 

 mile to the southwest of Chaseville, is a brook which affords a good section of 

 over 500 feet. In the lower part, and but a short distance above the high- 

 way, are thin, argillaceous shales, containing only a few fossils, among them 

 Ti-opidoleptus carinatus (Con.), Hall. A little higher, the shales are coarser, 

 bloeky, and contain quite a number of Hamilton species. The lithologic 

 characters of the lower shales are nearer those of the Sherburne formation, 

 and the upper shales bear those of the Hamilton. The fauna is: 



1. Tropirfolept its carinatus (Con.), Hall. (c) 



2. Spirif w mucronatus (Con.), Bill. (rr) 



3. Languid densa, Hall (?). (rr) 



4. Palcpoia-ilo const ricta (Con.), Hall. (rr) 



5. Palceoneilo muta, Hall. (rr) 

 <i. Grammijsia alrcata (Con.), Hall (I), (rr) 



