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| FIGURE | PAGE |
| 1. | Graphic representation of volume change in weathering of a Georgia granite | 21 |
| 2. | Commercial (financial) control of the mineral resources of the world | 64 |
| 3. | Political (territorial) control of the mineral resources of the world | 64 |
| 4. | The fertilizer situation in the United States | 100 |
| 5. | Diagram showing the chemical composition and heat efficiency of the several ranks of coal | 122 |
| 6. | Origin and development of coal | 123 |
| 7. | Chart showing the present tendency of the United States in respect to its unmined reserve of petroleum | 134 |
| 8. | The annual output of the principal oil fields of the United States for the last twenty years | 135 |
| 9. | Curve showing the usual decline in oil field production after the period of maximum output is reached | 136 |
| 10. | Chart showing the relative values of the principal petroleum products manufactured in the United States from 1899 to 1914 | 138 |
| 11. | Alteration of Lake Superior iron formation to iron ore by the leaching of silica | 168 |
| 12. | Representing in terms of weight the mineralogical changes in the katamorphism of serpentine rocks to iron ore, eastern Cuba | 172 |
| 13. | Diagram showing gradation from syenite to bauxite in terms of volume | 245 |
