BELMONT COUNTY. 561 



spring-house attached to the former residence of Mr. Hutchinson we 

 found a cement limestone in which a basin has been excavated for the 

 water. The entire thickness of the layer was not seen. Prof. Wormley 

 analyzed a sample, and reports the following result of the analysis : 



Silicious matter g^ 20 



Alumina, with trace of iron g qq 



Carbonate of lime ', 37 go 



Carbonate of magnesia 23 89 



This limestone is worthy of further investigation. It has less alumina 

 than Prof. Wormley finds in the Parker cement limestone, but more than 

 is found in the reported analyses of some cement limestones in high re- 

 pute. Should this limestone prove to make a durable hydraulic cement, 

 the vast abundance of coal will furnish all the needed fuel for burning 

 at only the cost of mining. Following the railroad eastward, we find a 

 good exposure of the lower, or Bellair, coal t the railroad company's 

 quarry, in section 36. A geological section at this point is as follows : 



1. Shale, not well seen. 



2. Coal, with one clay parting 2 



3. Clay 8 



. Coal 6 



5. Clay, with nodular limestone 5 



6. Clay shale 11 



7. Coarse sandstone, quarried and used for the railroad bridge at Bell- 



air 25 



8. Shale 5 



Railroad track. (Map XIV., No. 13.) 



The stone from the quarry is used in the stone-work of the magnifi- 

 cent iron bridge across the Ohio River at Bellair. We find in some por- 

 tions of the rock impressions of coal plants, generally large fragments of 

 drifted wood, which became imbedded in the accumulating sand. They 

 are found twenty or -thirty feet below the Bellair seam of coal, and, of 

 course, were deposited long before the vegetation constituting that seam 

 of coal had grown. 



About a mile west of Bellair a geological section was made, showing 

 the upper Bellair coal, the equivalent of the upper Barnesville seam : 



Ft. In. 



1. Limestone 2 



2. Shale 5 



3. Coal „ 3 6 



4. Shale 10 



5. Sandstone 15 



36 



