174 J. J. STEVENSON — CARBONIFEROUS OP APPALACHIAN BASIN 



represent the Lower Kittanning of Pennsylvania, the estimated altitude 

 of the Pittsburg is very nearly correct, for in southeastern Ohio the 

 Lower Kittanning is from 134 to 150 feet below the top of the Allegheny, 

 and the Conemaugh is about 500 feet thick, so that bed ought to be 

 about 650 feet below the Pittsburg. 



Mr Campbell reports the record of a boring made at Huntingdon, 

 2 miles northeastward from Central City, which shows 



Feet 



1. Clay 20 



2. Red shales 330 



8. Sandstone 125 



4. Black shale 3 



5. Coal bed 10 



6. Shale 30 



7. Coal bed 4 



8. Shale .... 40 



9. Coal bed , 6 



10. Shale 332 



11. White sandstone 100 



12. Shale 172 



The thick sandstone, number 3, is the same with the double sandstone 

 at Central City, as recognized by Doctor White and Mr Campbell, the 

 latter seeing in it his Charleston sandstone, which overlies the Black flint 

 of the Kanawha valley. Numbers 4 to 10, inclusive, are the Kanawha 

 formation, and numbers 11 and 12 are the Lower Pottsville. Number 5 

 is Kentucky coal 6, the Stockton of the Kanawha valley, or possibly that 

 bed may be represented by numbers 5 and 7, as the Stockton and 

 Lewiston. Number 9 is very nearly in the place of the black shale, num- 

 ber 10, of the Central City well. Doctor White gives a measured section 

 at Huntingdon from the Pittsburg coal bed to the bottom of the sand- 

 stone, number 3, showing the interval to be 660 feet, or 10 feet less than 

 the estimated interval at Central City. Sandstone seems to be wholly 

 wanting in the Kanawha at Huntingdon.* 



Mr Campbell, in the same folio, gives also the records of two borings 

 in eastern Cabell county, at about 14 miles south-southeast from Hunt- 

 ingdon. The Lower Pottsville in both appears to be a continuous mass 

 of sandstone, 410 to 420 feet thick, showing rapid increase from Hunt- 

 ingdon, with disappearance of the bottom shales. The shale at the 

 bottom of the Kanawha is 275 feet in one well and 339 in the other, 

 above which, in each, is sandstone to a coal bed, 5 to 6 feet thick, at 355 



* M. R. Campbell : Huntingdon folio. 

 I. C. White : Bulletin no. 65, p. 84. 



