Ban goc (Tiếng Anh)

CHAPTER I. Volcanoes in general—Origin of the Name—General Aspect—Crater—Cone—Subordinate Cones and Craters—Peak of Teneriffe—Lava-Streams—Cascades and Jets of Lava—Variations in its Consistency—Pumice—Different Sorts of Lava—Obsidian—Olivine—Sulphur—Dust, Ashes, &c.—Volcanic Silk—Volcanic Islands—Volcanic Fishes—Hot Water, Mud, Vapours, &c—Volcanic storm—Explosions—Number of Volcanoes—King of the Volcanoes—Artificial Volcano. Among the many wonderful works of God, none exhi