1865.1 



63 



[Lesley, 



and western counties of the State. At one of tkese, Sliga Furnace-, 

 on Licking Creek, Piney Township, 10 miles S. S. W. of the county 

 seat of Clarion, and 23 miles in a straight line S. &. E. of Oil City, 

 a well was sunk for oil, which has reached the depth of aboiit one 

 thousand feet, passing through the following rocks :. 



Salt Well, Sligo Furnace. 



Last boring done not measured. The hole is less than 1000 feet. 



N. B. The mouth of the well is 175 feet below the Buhrstone 

 Ore-bed level (all the rocks being nearly horizontal); below the ore, 

 30 to 40 feet, lies the Clarion coal; above the ore, 25 feet, the Kit- 

 tanning coal ; above this again, 50 feet, the general surface of the 

 country. 



Now it is evident that the mass of sandrock from 68.09 to 183.04, 

 represents No. XII, the Millstone Grit, or Great Conglomerate, 116' 



