| Anti-conservational effects of war | 365 |
| Conservation of coal | 366 |
| Measures introduced or proposed to conserve coal | 367 |
| (A) Mining and preparation of coal | 368 |
| Progress in above methods | 370 |
| (B) Improvement of labor and living conditions at the mines | 372 |
| (C) Introduction or modification of laws to regulate or to remove certain restrictions on the coal industry | 373 |
| (D) Distribution and transportation of coal | 376 |
| (E) Utilization of coal | 377 |
| (F) Substitutes for coal as a source of power | 378 |
| Division of responsibility between government and private interests in the conservation of coal | 379 |
| Conservation of minerals other than coal | 382 |
XVIII. | INTERNATIONAL ASPECTS OF MINERAL RESOURCES | 383 |
| World movement of minerals | 383 |
| Movemenet of minerals under pre-war conditions of international trade | 385 |
| Changes during the war | 385 |
| Post-war condition of the mineral trade | 387 |
| Tendencies toward international coöperation and possibility of international control of minerals | 389 |
| Methods of international coöperation | 391 |
| Conservation in its international relations | 393 |
| Exploration in its international relations | 395 |
| Valuation in its international relations | 396 |
| Relative position of the united states in regard to supplies of minerals | 396 |
| The coal and iron situation of western europe under the terms of the peace | 400 |
| Conclusion | 403 |
| Literature | 403 |
XIX. | GEOLOGY AND WAR | 405 |
| Geology behind the front | 405 |
| Geology at the front | 408 |
| Effect of the war on the science of economic geology | 412 |
XX. | GEOLOGY AND ENGINEERING CONSTRUCTION | 413 |
| Foundations | 413 |
| Surface waters | 414 |
| Tunnels | 414 |
| Slides | 415 |
| Subsidence | 417 |
| Railway building | 417 |
| Road building | 418 |
| Geology in engineering courses | 419 |
XXI. | THE TRAINING, OPPORTUNITIES AND ETHICS OF THE ECONOMIC GEOLOGIST | 420 |
| Pure versus applied science | 420 |
| Course of study suggested | 422 |
| Field work | 425 |
| Specialization in studies | 426 |
| A degree of Economic Geology | 427 |
| The opportunities of the economic geologist | 428 |
| Ethics of the economic geologist | 430 |