768 GSOLOGY OP OHIO. 



cart, and McKey, the main coal varies from five feet to five feet six inches, 

 the clay from six inches to one foot, while the roof coal is said, at times, to 

 reach three feet. The bank operated by Mr. Eobert Button is regarded as 

 yielding the best coal. It shows the following section : 



1. Roof Coal 6 inches to 1 foot. 



3. Clay ...••. 10 inches to 1 foot 3 inches, 



3. Slate.... 2 inches. 



4. Coal 2 feet 9 inches. 



5. Parting | inch. 



6. Coal 1 foot 2 Inches. 



7. Parting...................... 2 inches. 



8. Coal Ifoot. 



9. Fire-clay 3 feet 6 inches. 



10. Limestone. . 4 feet. 



The roof coal is said to be very good. The upper pyrites band, so char- 

 acteristic of the bed, is not persistent here, and occurs only occasionally 

 four to eight inches from the top. Nodules of pyrites are common in the 

 upper portion of No. 4, as well as in No. 8, where, also, a pyrites band, 

 nearly one-half inch thick, is constant. Some portions of the bed are 

 exceedingly rich in bitumen, there being layers several inches thick, 

 which seem to consist of little else. Broken across the grain , the fracture 

 is clean and conchoidal, but when split with the grain, the surface is 

 irregular. In the middle portion, the coal is rather open-burning, comes 

 out beautifully in blocks, and contains many laminae of vegetable char- 

 coal. In the lower portion, films of carbonate of lime frequently occur 

 on the faces. This is one of the prettiest coals in the county, and appears 

 to be comparatively free from sulphur. 



On the Smithfield road, there are several openings near Short Creek. 

 In these the main coal is five f^et to five feet four inches thick, and the roof 

 coal is from six to twelve inches. The coal is not inferior to that obtained 

 on Long Run. The bed is one hundred and sixty feet above the creek, 

 and the section below is— 



Coal No. 8. 



Fire-clay »......>......»....................... 3 feet. 



Limestone 3 " 



Shale 35 '■ 



Limestone 1 " 



Shales ami sandstone to creek. 



Smithfield Townshi'p. — As in Mt. Pleasant, the surface here is elevated, 

 the village of Smithfield being not far from six hundred feet above the 

 Ohio Eiver. Owing, however, to the regular rise of the strata north- 

 westward, Coal No. 8 ie available in a large portion of the township, being 



