1866.J 



235 



[Lesley. 



Sandstone, brown, hard, with sulphur 



Slate, shelly, . 



Limestone, rotten. 



Sandstone, 



Slate, shelly, , 



Coal, 



Fireclay, hard, 



Fireclay, calcareous, 



Limestone rock, 



Fireclay, hard, 



Limestone, . 



Fireclay, 



Limestone and small seams of F. C 



Slate, decomposing in air 



Limestone, . 



Fireclay, 



Limestone, . 



Slate and fireclay, 

 which cannot be many feet abov 

 its upward grade of 1° westwa 



3.0 to 190.0 

 1.0 to 191.0 

 1.5 to 192.5 

 1.0 to 193.5 

 6.0 to 199.5 

 1.0 to 200.5 

 1.0 to 201.5 

 1.5 to 203.0 

 2.0 to 205.0 

 2.0 to 207.0 

 1.0 to 208.0 

 1.0 to 209.0 

 3.5 to 212.5 

 2.0 to 214.5 

 1.0 to 215.5 

 2.5 to 218.0 

 .5 to 218.5 



. 11.0 to 229.5 

 .^e the Great Bed cut by the tunnel in 

 rd, the bed itself descending with a 

 dip of 1° westward. The above 229.5 therefore represents the mid- 

 dle portion of the Lower Coal Measures. The entire absence of 

 workable coal beds above the tunnel bed is due to the fact, that the 

 top of the section is not high enough to take in the Freeport Series, 

 which underlie the Mahoning Sandstone. 



Pleasant Unity is a village nine miles south-southwest from Latrobe, 

 on Sewickley Creek. West-northwest of this village two and a half 

 miles is Pauf Graff's oil well, begun October, 1864, which commences 

 50 feet beneath the Pittsburg Coal-bed, and reached a depth of 550 

 feet in May, 1865, in a mass of sandrock. It reported "shows of oil 

 at 450, 510, and 550; and pumped at each, getting several gallons." 



Three hundred yards due north of this well, is the Old Oneida 

 Salt Well, bored in 1840, 800 feet deep, a tradition being in existence 

 that it flowed a hundred barrels of oil per day. On the strength of 

 this tradition it was reamed out in 1858, with no result beyond pass- 

 ing a show of oil at 538 feet, and after that coming (at a depth not 

 stated) to a coal-bed from 12 to 14 feet thick; which, if npt fabu- 

 lous, must be an exaggerated estimate of the Upper Freeport Coal- 

 bed, the outcrop of which is not three miles away, at the foot of the 

 Chestnut Ridge. It is probably the 7 feet coal-bed of the following 

 section, and a good illustration of the unreliability of the thickness 

 VOL. X. — 2f 



