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c-a documents
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The Solar Spectrum
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Thunderstorms
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An Explosion (?) on the Sun*
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Physics
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The Corona Line
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The Sherman Astronomical Expedition
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Spectroscopic Nomenclature
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The Solar Aurora Theory
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Phosphorescence in Wood
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Bullfinches and Primroses
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Change of Habits in Toads
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Re-Reversal of Sodium Lines
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Flowers and Bees
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Professors Exner and Young
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Ice under Pressure
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Spectroscopic Notes, 1879–80
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The Reversion of Sunflowers at Night
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Note on the Spectrum of Brorsen's Comet
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Standard Railroad Time
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Krukenberg's Chromatological Speculations
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The Composition of Chlorophyll
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