480 GEOLOGY OF OHIO. 



Ft. In. 



13. "Not exposed 28 



14. Sandstone 10 



15. Not seen 4 



16. Limestone, with shales '. 9 



17. Shale 7> 



18. Coal once exposed, Hobson seam. 



The place where this lower coal was seen is by estimate forty feet 

 above the level of the Muskingum River. It is probably ten or fifteen 

 feet higher than the same seam in the Narrows below Harmar. Neither 

 of the seams of coal in the above section was exposed for measurement. 



On the land of Jacob Sutter, on Second Creek, a seam of coal is found 

 with the following associated strata : 



Ft. In 



1. Sandstone 12 



2. Eed shale - 5 



3. Not seen 13 



4. Hard blue limestone 10 



5. Shale 1 6 



6. Blackslate 9 



7. Coal 1 6 



8. Clay 4 



9. Coal 6 



10. Notseen 2 



11. Sandstone .'. 2 



12. Shale 10 



Bed of Second Creek. 



I suppose this to be the Hobson seam. In the bed of Second Creek 

 abundant nodules of rich- iron ore are found. These have been gathered 

 _and used for the puddling furnaces in the Marietta rolling-mill. Many 

 years since I traced these nodules to their origin in a stratum of blue 

 clay, from which they had been washed. While examining the region 

 in the prosecution of the State Survey, the clay seam was found to be 

 buried, and its exact place was not identified and no measurement 

 taken, but I have no doubt that it is the same blue clay which carries 

 nodular ore seen on March Run hill, about seventy feet above the level 

 of the Hobson coal. Under a bridge over Second Creek, on the plank- 

 road, near the east line of the township, is a thin seam of limestone con- 

 taining scales of fishes and some small univalve shells. 



SALEM TOWNSHIP. 



This township lies east of Adams. Its drainage is entirely by the 

 waters of Duck Creek and its tributaries, excepting the western margin, 

 which is drained by Bear Creek, Duck Creek, in this township, is re- 



