xvi ILLUSTRATIONS. 



Facing 

 Page 

 XXVI. Cleveland Sandstone cliff along Right Fork of Little Ka- 



nawha River, % mile west of Bois, Lewis County 400 



XXVII. Falls of Right Fork of Little Kanawha River at Bois, 

 Lewis County; over Cleveland or next underlying sandstone 

 at left and over mill dam on right; Topography of the Potts- 

 ville Series 416 



XXVIII. Looking north at the mouth of Andy Run, % mile east 

 of Bois, Lewis County; Right Fork of Little Kanawha and 

 lumber tramroad at left; Topography of the Allegheny and 

 Pottsville Series 432 



XXIX. Looking down Flat Run, 1.3 miles northwest of Cleveland, 

 Lewis County; Topography of the Allegheny and Pottsville 

 Series 448 



XXX. Looking eastward along Sand Fork at Copley, Lewis 

 County; South Penn Oil Co. buildings in center; Michael 

 Copley Heirs No. 1 (363) well (perhaps the largest ever 

 drilled in West Virginia) at left center; Waynesburg Sand- 

 stone among brush piles near sky line; Topography of the 

 Dunkard and Monongahela Series 464 



Figures. 

 No. Page. 



1. Showing Progress of Topographic and Geologic Mapping in 



West Virginia XVIII 



2. Showing Location of Lewis and Gilmer Ai-ea XVIII 



3. Diagram Showing Relative Position of Coal Seams 503 



4. Showing Area of Washington Coal (See Explanation in Text) 511 



5. Showing Area of Redstone Coal (See Explanation in Text) . . 517 



6. Showing Area of Pittsburgh Coal (See Explanation in Text) . 537 



7. Showing Area of Elk Lick Coal (See Explanation in Text) . . 559 



8. Showing Area of Bakerstown Coal (See Explanation in Text) 566 



9. Showing Area of Upper Freeport Coal (See Explanation in 



Text) 574 



10. Showing Area of Upper Kittanning Coal (See Explanation in 



Text) 578 



11. Showing Area of Lower Kittanning Coal (See Explanation in 



Text) 581 



12. Showing Progress of Studies of Invertebrate Fossils... . 618 



