Cincinnati Society of Natural History. 



16. Centreville. 



17. Huston's Quarry. 



18. Fauver's Quarry. 



19. Keplinger Farm. 



20. West Charleston Falls. 

 20a. John Cushwa's Farm. 



21. Col. Woodward's Farm. 



22. Troy. High Banks. 



23. Piqua. 



24. Ludlow Falls. 



25. West Milton. 



26. New Paris. 



27. Euphemia. 



28. Lewisburgh. 



29. Carl Quarry. 



30. Crisman Quarry. 



31. Eaton. 



32. Eaton. Clinton Quarry. 



33. Enterprise Quarry. 



34. Fair Haven Quarries. 



E. A STUDY OF A PORTION OF THE UPPER SILURIAN ROCKS OF SOUTH- 

 EASTERN INDIANA AND THEIR CORRELATION WITH 

 EQUIVALENT STRATA IN OHIO. 



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

 the study of the same. 



II. Description of observations at the separate localities. 



35. Richmond. 



36. Elkhorn Falls. 



37. Longwood. a. Ball's Quarry. 



b. Washam's Quarry. 



38. Laurel, a. Dry Branch Quarry. 



b. Henry Dice's Quarry. 



c. Seegar's Quarry. 



d. Chris Meade Falls Quarry. 



e. Derbyshire Falls. 



39. New Point. 



40. Rofing and Wagner's School House. 



41. Napoleon. 



42. Osgood. 



