Chapter II: Preface: v

CHAPTER

I. PETROLEUM, BY JOHN D. NORTHROP 1

II. COAL, BY GEORGE S. RICE AND FRANK F. GROUT 22

III. IRON, BY E. C. HARDER AND F. T. EDDINGFIELD 55

IV. MANGANESE, BY D. F. HEWETT 90

V. CHROMIUM, BY E. C. HARDER 109

VI. NICKEL, BY C. S. CORBETT 129

VII. TUNGSTEN, BY FRANK L. HESS 142

VIII. VANADIUM, BY R. B. MOORE 163

IX. ANTIMONY, BY H. G. FERGUSON AND D. A. HALL 172

X. MOLYBDENUM, BY R. B. MOORE 191

XI. RADIUM AND URANIUM, BY R. A. F. PENROSE, JR. 201

XII. ZIRCONIUM, BY H. C. MORRIS 209

XIII. MONAZITE, THORIUM, AND MESOTHORIUM, BY R. B. MOORE 216

XIV. COPPER, BY F. W. PAINE 223

XV. LEAD, BY FREDERICK B. HYDER 261

XVI. ZINC, BY FREDERICK B. HYDER 294

XVII. TIN, BY JAMES M. HILL 317

XVIII. MERCURY, BY F. L. RANSOME 337

XIX. BAUXITE AND ALUMINUM, BY JAMES M. HILL 349

XX. EMERY AND CORUNDUM, BY FRANK J. KATZ 356

XXI. MAGNESITE, BY R. W. STONE 363

XXII. GRAPHITE, BY H. G. FERGUSON, FRANK F. GROUT, AND GEORGE
D. DUB 372

XXIII. MICA, BY DURAND A. HALL 380

XXIV. ASBESTOS, BY OLIVER BOWLES 388

XXV. PHOSPHATE ROCK, BY R. W. STONE 402

XXVI. POTASH, BY HOYT S. GALE AND A. W. STOCKETT 411

XXVII. NITROGEN, BY CHESTER G. GILBERT 421

XXVIII. PYRITE AND SULPHUR, BY A. G. WHITE 447

XXIX. GOLD, BY JOHN E. ORCHARD 462

XXX. SILVER, BY F. W. PAINE 495

XXXI. PLATINUM, BY JAMES M. HILL 506

XXXII. WHO OWNS THE EARTH? BY J. E. SPURR 522

POLITICAL AND COMMERCIAL GEOLOGY

AND THE

WORLD’S MINERAL RESOURCES