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The Diosemeia consists of forecasts of the weather from astronomical phenomena, with an account of its effects upon animals.

It appears to be an imitation of Hesiod, and to have been imitated by Virgil in some parts of the Georgics.

The materials are said to be taken almost wholly from Aristotle's Meteorologica, from the work of Theophrastus, On Weather Signs, and from Hesiod.

Nothing is said in either poem about Hellenistic astrology.