Lesley.] 38 [April. 



There are two other places for iron ore in the series, but 

 they have not been explored in this neighborhood. The Buhi'- 

 stone Ore of Clarion and Venango Counties, in Pennsylvania, 

 and of the Hanging Rock Region of Ohio, and of Grayson 

 and Carter Counties, in Kentucky, ought to come in between 

 Coal-bed No. 1, C, and Coal-bed No. 2. But the Kentucky 

 geologists conclude from their observations, that this remark- 

 able deposit did not extend itself so far south in this direc- 

 tion. 



Another bed of iron ore, however, exists on the hills on 

 the east branch of Jenny's Creek, which probably spreads 

 itself more or less through all the hills of the country. It 

 underlies 30 feet of sandstone and 2 feet of shale ; and it 

 consists of a roof of pyritiferous sandstone, 8 inches ; black 

 bituminous shale, 1"10 ; iron ore, 2 to 4 inches; coal, 2"6 ; 

 underclay, 1 foot.* The inclosure of the iron ore between 

 two bituminous beds, is not favorable to its quality. This is 

 probably the same ore stratum which underlies the Top Hill 

 Rock (Mahoning Sandstone), on the Licking waters,t and 

 the Red River branches, where it is from 18 to 20 inches 

 thick, and of good quality, | The situation in the series is 

 precisely that occupied by the Summit Ore stratum of Arm- 

 strong County, in Pennsylvania. It deserves to be carefully 

 studied. 



Petroleum is the mineral that excites most interest at pre- 

 sent in all this region, and the show which it makes upon 

 the surface is extraordinary. It issues in numerous places 

 from the base of the cliffs which form the walls of the cailons 

 through which flow the main Paint and its many branches. 

 It saturates the slopes and banks of loose sand. It flows off, 

 when the sand is stirred with a stick, as a shining scum upon 

 the surface of the stream. It has been caught against booms 

 and barrelled for sale. It unites, also, with the sweepings 

 from the Sub-conglomerate ore and coal shales, and forms 

 slimy ore bogs and muck heaps, where the base of the Con- 



* Lyon's Report, Vol. IV, p. 543. f Idem, p. 538, 537. 



J Idem, p. 535. 



