542 EXPLANATION OF THE PLATES. 



Fig. 4. Ceritliium unilineatum, Conr. p. 108. 



" 5. Mitra Carolinensi.s, Conr. p. 109. 



" 6. Cyprfi^a Carolincnsis, Conr. p. 109. 



" 7. Fasciolaria mutabilis, Conr. p. 109. 



" 8. Dispotaea multilineata, Conr. p. 109. 



" 9. Dispotaea dumosa, Conr. p. 109. 



" 10. Cassis Hodgii, Conr. p. 109, 



" 11. Mactra crassidens, Conr. p. 110. 



" 12. Maclra snbparilis, Conr. p. 110. 



" 13. Cardium sublineatum, Conr. p. 110. 



" 14. Gnathodon minor, Conr. p. 110. 



" 15. Amphidesma constricta, Conr. p. 110. 



" 16. Cardila pcrplana, Conr. p. 1 11. 



" 17. Cardita abbreviata, Conr. p. IIL 



" 18. Natica Caroliniana, Conr. p. 111. 



PLATE VI. 



ISOTELUS MEGISTOS, LoCKE, p. 221. 



PLATE Vn. 



Map of the course of Bowlders and Stride in North 



America, p. 179. 



PLATE VIIL 



Illustrations of the Phenomena of Drift. 



Fig. 1. Bowlders near Squam, Cape Ann, Mass. p. 170. 

 " 2. Striated Rocks at Bellows' Falls, p. 172. 

 " 3. Embossed Rocks on Mount Monadnock, p. 182. 



4. Profile and altitudes of the White Mountains, p. 184. 

 " 5. Embossed Ftocks and Bowlders at foot of Mount 



Franklin, p. 185. 

 " 6. Valleys of Erosion on Mts. Holyoke and Tom, p. 187. 

 " 7. Moraine in Palmer, Mass. p. 190. 

 " 8. Moraines in Truro, Mass. p. 191. 

 " 9. Tumuh in North Adams, Mass. p. 197. 

 " 10. Lateral Moraine, near the Notch, White Mts. p. 198. 

 " 11. Section of a Moraine in Uxbridge, Mass. p. 204. 

 " 12. Cross and inclined Stratification in fine materials, 



Northfield, Mass. p. 206. 

 " 13. Section of a Clay-pit in Deerfield, Mass. p. 207. 

 " 14. Terraces on the bank of Connecticut River, in Wea- 



thcrsfield, Vt. p. 208. 

 " 15. Fractured Rocks, Middlefield, IMass. p. 209. 

 "16. 17. Fractured and bent Rocks in Guilford, Vt. p. 210. 



