568 GEOLOGY. OF OHIO. 



Samples of coal from the lower, or Cumberland, seam were taken from 



the bank of Hon. Isaac Welsh, about a mile below Armstrong's Mills, 



and analyzed by Prof. Wormley, with the following result. No. 1 was 



taken from toward the bottom of the seam ; No. 2 was taken from toward 



the top of the seam : 



No. 1. No. 2. 



Specific Gravity 1.352 1.321 



Wa'^r 2.50 2.30 



Ash 10.50 11.20 



volatile combustible matter 32.50 32.50 



Fixed Carbon 54.50 54.00 



Totals 100.00 100.00 



Sulphur 2.44 2.62 



Sulphur remaining in coke 1.18 Not determ'd. 



Percentage of sulphur in coke (as coke) 1.81 



Gas in cubic feet per lb. of coal 3.39 2.96 



Color of ash White. Gray. 



Coke Compact. Compact. 



On the land of David Caldwell, on Crab-Apple Fork, section 27, the fol- 

 lowing section was taken : 



Ft. In. 



1. Coal, with shale roof, three-feet seam, reported 5 



2. Not exposed 25 



3. Sandstone and shales 11 



4. Shale 10 



5. Coal 2 



6. Clay : 1 



7. Limestone 2 6 



8. Sandy limestone 1 



9. Limestone 2 



10. White sandy shale 1 6 



11. Limestone 3 



12. Laminated sandy shale 10 



13. Clayshale .' 5 



14. Laminated white sandstone 12 



15. Clayshale 4 



16. Coal 3 7 



17. Underclay 2 



18. Mostly shale 18 



19. Buff limestone 2 



20. Clayshale 12 



21. Hard limestone 1 6 



22. Clay ". 3 



23. Laminated sandstone, hard 8 



Bed of stream. (See Map XIV., No. 16.) 



