544 EXPLANATION OF THE PLATES. 



PLATE XIV. 



Fossils from the Coal Rocks in Eastern Virginia. 



Fig. 1. Taeniopteris magnifolia. 

 " 2. Zamites obtusifolia. 

 " 3. Lycopodites uncifolius. 



PLATE XV. 



POLYTHALAMIA IN LiMESTONES FROM WESTERN AsiA, p. 356. 



Fig. 1. Rotalia globulosa. 

 " 2. 3. Textularia globulosa. 

 " 4. Missionary Station, Upper Mississippi. 

 " 5. From Mount of Olives. 

 " 6. From west side of Anti-Libanus. 

 7. From Bey root. 



PLATE XVL 



Sections illustrating the issue of Thermal Springs, in Virginia, 



from the lines of Anticlinal Axes, p. 331. 

 Illustrations of Normal, Inverted, and Folded Flexures, p. 490. 



PLATE XVn. 



Casts of Mud Furrows, Wave Lines, &c. 



Fig. 1. Sketch of a Slab from the Portage Group, p. 423. 



" 2. Mud Furrows, p. 425. 



" 3. Section of the Cast of a Mud Furrow, p. 426. 



" 4. Wave Lines, from Medina Sandstone, 427. 



PLATES XVIIL XIX. XX. XXL 

 Sections of the Appalachian Chain. 



Section A. From the Allegheny Mt., Luzerne Co. Pa., to the 

 South Mountain in Berks Co. p. 504. 



Section B. From Chesnut Ridge, Indiana Co., Pa., through Ar- 

 magh and Shippensburg, to the South Mt. in Cumberland Co., 

 p. 504. 



Section C. From Blue Ridge, at Ashby's Gap, to Allegheny Mt., 

 at N. W. Turnpike, p. 505. 



Section D. From the head of the South Fork of Roanoke River, 

 to Little Mt., 5 miles from Union, p. 505. 



Section E. From Poplar Camp Mt. at Poplar Camp, to Tug Ridge, 

 west of Abb's Valley, p. 506. 



