151 ^ Appendix. 



.' Ammonites HildrethL (S. G. M.) Fig. 48. See PL i, Fig. 24. 



A silicious cast. 



Ammonites colubrellus. (S. G. M.) Fig. 49. Shell discoid^ much 



compressed, with numerous slightly convex volutions : sutures sig- 

 moidal. 



Fig. 50. Pyritous cast of Ammonites Ilildrcthi. 

 Fig. 5L Pyritous cast of Ammonites colubrellus. 

 Fig. 52. Indeterminate cast of a univalve. 



Fig. 53. Pyritous casts of Ammonites HildretTii^ compressed and 

 distorted. 



Fig. 54. Sections of same fossil. 

 Fig. 55 and 56. Pyritous cast of TurntcIIa 7 

 ■ Ffg. 58. Indeterminatej cast of a bivalve. 

 Fig. 59. Pyritous cast of a Terehratula. 

 Fig. 60. Pyritous cast of another species o(. Terehratula. 

 Fig. 61. Cast of a Nautilus. 



Fig. 63. Bci)Jeurn Del'ayi. (Green, Monog. Trilob. p. 79.) 

 Fig. 64. Calymene callicephala. (Green, Monog. Trilob. p. 80.) 

 .Fig. 65. Calymene bufo. (Green, Monog. Trilob. p. 41.) 



PLATE XXIX. 



Fig. 65. Uncertain. , 



PLATE XXX. 



Fig. 1. Lepidodendron. 

 Fig. 2. Uncertain. 

 Fig. 3 and 4. Pecopteris. 

 Fig. 10. Uncertain. 



PLATE XXXI. 



View of Pomeroy's Coal Bed, at Carr's Run, Ohio. 



PLATE XXXII. 



View of Marshall's Pillar— Cliffs of New River, Va. 



PLATE XXXIII. 



View of the Falls of the Kenawha, Va. 



PLATE XXXIV, 



View of the Kenawha Salines. 



w 



PLATE XXXV. 



, View of Putnam's Hill from West Zanesville. 



PLATE XXXVT. 



View of Putnam's Hill and the upper Bridge at Zanesville, on the 



Muskinffum Rivpr. 



