1874.] 195 [Whittlesey. 



which is nearly northwest and southeast ; evidently local, like that at 

 Salineville. A heavy bed of limestone, capping the hills, lies in 

 conformity to the Nisely seam (No. 6), its elevation ranging along 

 the valley to the southeast as follows : 696', 658', 648' and 550'. 



It is but a short distance down the Ohio from Yellow Creek to 

 the Pittsburg seam, as it appears in the hills around Steubenville. I 

 add a few more calculations for dip, made in this seam, which is the 

 most regular of any in Ohio. It crops out through Jefferson and 

 Harrison Counties to the north and west. If from the base of the 

 series as high as No. 6, the beds have been disturbed since their de- 

 position, this seam (No. 8 of the Reports) must have partaken of the 

 same movements. 



No. 17. Coal Seam No. 8. 



This is the first seam above the barren ground. At New Cumber- 

 land, West Virginia, eight miles above Steubenville, the first seam 

 below the barren measures, is, according to Mr. Briggs of the Virginia 

 Survey (1840), 262 feet A. At Rush Creek, thirteen miles below 

 Steubenville, in a shaft, it is 133 feet below lake level, showing a de- 

 scent of 395 feet in 21 miles, or between 18 and 1 9 feet per mile. 

 Here the barren measures are 543 feet thick. Using Rainey's mine, 

 between Rush Creek and Martinsburg, as one point, Ball & Co.'s 

 mine, on MacMahon's Creek, west of Bellaire, as another, and the 

 mouth of Weegee Creek, on the Ohio, as a third, the dip of the Pitts- 

 burg seam is south 37° east, 23' per mile. Using Bellaire, Ball & Co.'s 

 mine, and mouth of Pipe Creek, it is south 45° east, 53' per mile. 



From thence it passes under the highlands to the northwest, com- 

 ing out in the valley of Wills Creek, west of Barnesville, very much 

 changed in all respects, and difficult of identification. Professor 

 Andrews finds there no conspicuous barren ground. The limestone 

 beds, from fifty to seventy feet thick, overlying the Pittsburg seam as 

 far down the Ohio as Wheeling, have become thin and unimportant. 

 His profile thence to Zanesville, shows several more seams of coal 

 than does the Report on the Northeastern district. But near Hope- 

 dale, in Harrison Co., on the highlands between Connoten and the 

 waters of the Ohio, Prof. Read has found the overlying limestone 

 in its usual force. In passing from one county to another southwest- 

 erly, it loses its excessive thickness, and is identified with great diffi- 

 culty. 



The value of the elevations I have given in the nature of profiles, 



