Etna : a history of the mountain and of its eruptions . 2.—1838.—1842. —1843.—1852.—1865.—1874.—General characterof the Eruptions 79 CONTENTS. CHAPTER VI. GEOLOGY AND MINERALOGY OF THE MOUNTAIN. Elie de Beaumonts classification of the rocks of Etna.—Hoff-mans geological map.—Lyells researches.—The periodof earliest eruption.—The Val del Bove.—Two cratersof eruption.—Antiquity of Etna.—The lavas of Etna.—Labradorite.—Augite.—Olivine.—Analcime.—Titanifer-ous iron.—Mr. Rutleys examination of Etna lavasunder the microscope 114 W LIBRARY LIST OF ILLUSTRATIONS. View of Etna from Catania ...To face T
Etna : a history of the mountain and of its eruptions . 2.—1838.—1842. —1843.—1852.—1865.—1874.—General characterof the Eruptions 79 CONTENTS. CHAPTER VI. GEOLOGY AND MINERALOGY OF THE MOUNTAIN. Elie de Beaumonts classification of the rocks of Etna.—Hoff-mans geological map.—Lyells researches.—The periodof earliest eruption.—The Val del Bove.—Two cratersof eruption.—Antiquity of Etna.—The lavas of Etna.—Labradorite.—Augite.—Olivine.—Analcime.—Titanifer-ous iron.—Mr. Rutleys examination of Etna lavasunder the microscope 114 W LIBRARY LIST OF ILLUSTRATIONS. View of Etna from Catania ...To face Title. Topographical Map of Etna ... To face page 1 Sections of Etna 30 Grotto delle 36 The Casa Inglesi and Cone of Etna 52 View of the Val de Bove 58 View of Etna from Bronte 66 Island of Columnar Basalt off Trezza 74 Geological Map of Etna 114 Map of the Val del Bove (woodcut) ... 117 Ideal Section of Mount Etna 119 Profile of Etna 121 Sections of Etna Lavas seen under the Microscope, to face p. 138.
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