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| CHAP. X. | |
| STATE OF GEOLOGICAL THEORY. | |
| Page | |
| General Observations | 277 |
| Physical Geography | 286 |
| Distribution of Land and Sea | 286 |
| Heights and Depths | 288 |
| Displacements of Stratified Rocks | 289 |
| Direction | 292 |
| Production of Longitudinal Fissures | 299 |
| Formation of Transverse Fissures | 300 |
| Formation of Fissures in a Conical Elevation | 300 |
| Faults | 301 |
| Periods of Ordinary and Critical Action | 301 |
| Primary Period.—Carboniferous Period | 302 |
| Oolitic and Cretaceous.—Periods Eocene Period of Mr. Lyell | 303 |
| Modern Period of Ordinary Action | 304 |
| Climate | 305 |
| Conclusion | 315 |
| CHAP. XI. | |
| POPULAR VIEWS AND ECONOMICAL APPLICATIONS OF GEOLOGY. | |
| Introductory Remarks | 317 |
| Aspect of the Earth's Surface | 319 |
| Outline of Land and Sea | 320 |
| Undulations of the Interior | 322 |
| Scenery | 324 |
| Economical Applications of Geology | 326 |
| Agriculture | 326 |
| Construction of Roads, Railways, Canals, &c. | 329 |
| Building Materials | 330 |
| Coal and other Mineral Products | 331 |
