EXPLANATION OF THE PLATES. 543 



PLATE IX. 



Map of Moraines in Andover, Mass. p. 199. 



PLATE X. 



Fig. 1. Map of ancient Earthworks on the east bank of Little 

 Miami River, Ohio, p. 234. 

 " 2. Section of an Earthwork at Coleraine, Hamilton Co., 

 Ohio, p. 234. 



PLATE XL 



Fossil Footmarks. 



Fig. 1. Ornithoidichnites Lyellii, p. 253. 



" 2. Ornithoidichnites Sillimani, p. 256. 



" 3. Ornithoidichnites fiilicoides, p. 258. 



" 4. Series of Ornithoidichnites fulicoides, p. 259. 



5. Outhne of the foot of the Pied-bill Dobcliick, {Podiceps 

 Carolincnsis,) p. 260. 



" 6. Outline of the Coot's foot, {Fulica Americana,) p. 259. 



" 7. Ornithoidichnites Eogersi, p. 256. 



8. Track of a Snow-bird, {Fringilla Hudsonia,) p. 257. 



" 9. Sauroidichnites Deweyi, p. 261. 



PLATE XIL 



Section from Cleveland, Ohio, southwesterly, to the Mississippi 



River, p. 269. 

 Section from St. Lawrence Co., southwesterly, to Chautauque lake, 



showing the succession of the New York Rocks, p. 293. 



PLATE XIIL 



Fossils of the New Red Sandstone. 



Fig. 1. Coniferous trunk, from Southbury, Conn. p. 294. 

 A. Cross Section. 

 - B. Longitudinal Section. 

 C. Ditto, showing microscopic agates. 



" 2. Tffiniopteris , Mount Holyoke, p. 295. 



" 3. 4. 5. Voltzia ? from Montague, Mass. p. 296. 



