Outflows of resinResinosisalro come under this general heading; but although some resin-fluxes are traced to the destructive action of Agaricus melleus in Conifers, others, as well as certain forms of Gummosis, are still in need of explanation. [Please select]
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Lieutenant Ruffner describes one of the great lava outflows in the West in a way that serves to set before the reader the magnitude of the eruptions which have made America _par excellence_ the volcanic continent. [Please select]
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These great outflows of lava are not confined to mountains, but take place now and then from openings in the ground, or from long cracks in the surface rocks. [Please select]
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These were the most recent strong displays of volcanic energy in Central America, though former great outflows of lava are indicated by great fields of barren rock, which extend for miles. [Please select]
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