1874.] 193 [Whittlesey. 



No. 9. Coal Seam No. 1. 



Massillon, Tallmadge, and Briar Hill, near Youngstown, Mahoning 

 County; length of sides one hundred and twelve miles ; dip 53° east, 

 8-|' per mile ; very flat, representing the base of the series. 



No. 10. Coal Seam No. 1. 



Tallmadge, 51 7' (W.); Brookfield, Trumbull Co., on the State line 

 near Sharon, Pa., 426' (W.) ; Briar Hill, Mahoning Co., out-crop, 

 342' (W.). Sum of the sides ninety-nine miles ; dip south 12° east, 

 20 T 6 / per mile. The mean of all the mines at Coal Hill, Tallmadge, 

 is 505'. The above represents the old Newberry opening at the 

 north end of the hill. 



No. 11. Coal Seam No. 1. Local. 

 Mahoning County, valley of the Mahoning River, Briar Hill, 342' 

 (W.) ; Mt. Nebo, 222' (W.); and Ewing's boring on Meander Creek, 

 305' (W.). Sum of the sides twenty-seven. miles; dip south 22° east, 

 14' per mile. This bed is very irregular in the Youngstown region. 

 It lies in local troughs and basins that connect with each other, with- 

 out any apparent system. From the sump to the out-crop of some 

 of the mines, there is frequently a rise of 50'. I have not always 

 been able to get the elevation of the sump. 



No. 12. Coal Seam No*. 1. Local.. 



Mt. Nebo, Briar Hill, and Porter's old bank on Meander Creek, 

 332' (sump); dip south 37° east, 13' per mile; length of sides twenty- 

 five miles, between the Meander and the Mahoning Rivers.. 



No. 13. Coal Seam No. 1. Local. 



Mt. Nebo, Mineral Ridge, 377', and Ewing's, dip south 18° east; 



16 iV P er m ^ e * 



No. 14- Coal Seam No. 6. Local. 



New Chambersburg, Columbiana Co., 629' (W.) ; Rochester, in* 

 valley of Sandy, 560' ; near Hanover Station, 549' (W.) ; sides four- 

 teen miles ; dip south 10° east, 30' per mile. A little more than a mile 

 southeasterly of Hanover Station the bed rises to 592', and tapers 

 out in that direction. 



No. 15. Limestone, next below No. 6. 



Hanover Station, Columbiana Co., 540' (W.) ; on old canal at 

 Section 25, near Dungannon, Hanover township, 540' (W.) ; on. 



PROCEEDINGS B.. S. N. H..— VOL.. XVII. 13, JANUARY., 1875.. 



