Part I: the snow crystal -- History -- Taking the snow crystal's picture -- Some facts on observation -- Classification -- Circumstances of occurrence -- Markings -- Shapes of cavities -- Parasitic crystals -- Picture crystals -- Crystallography of the snow crystal -- Peculiar crystals -- Partial bibliography of the ice crystal -- Part II: The snowflake's closest of kin, and its cousin, the dewdrop -- Ice flowers -- Windowpane frost -- Dew and frost -- Rime -- Glaze -- Sleet -- Graupel.
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