An Account of the Middle Siberian Rocks of Ohio and Indiana. 



161 



AN ACCOUNT OF THE MIDDLE SILURIAN ROCKS OF 



OHIO AND INDIANA, 



Including the Niagara, and Ohio Clinton and the bed at the top 

 of the Lower Silurian strata, formerly considered the Medina. 



(With a Map ; PI. VII.) 



By Aug. F. Foerste. 



CONTENTS. 



A. THE BELFAST BED 01 OHIO, FORMERLY CALLED THE MEDINA, 

 WITH FREQUENT OBSERVATIONS ON THE i 'CLINTON ' OF OHIO. 



I. A general discussion of the problem, with the conclusions derived from 

 a study of the same. 



II. Description of observations at the separate localities. 



1. Winchester. 



2. Peebles. 



3. Kelly's Mill. 



4. Belfast. 



5. Sharpsville. 



6. Todd's Fork. 



7. Spring Hill. 



8. Betty Heidy's Quarry. 



9. Caesar's Creek. 



10. Goe's Station. 



11. Donnelsville. 



12. Brown's Quarry. 



13. Morris Hill. 



14. Marian Clark Farm. 



15. Thorp Farm. 



