Statistics for occurrence #1 of “Nile” in book 2, chapter 22, section 4 of Herodotus, The Histories:
...ere all year round, and cranes come every year to these places to winter there, flying from the wintry weather of Scythia. Now, were there but the least fall of snow in this country through which the Nile flows and where it rises, none of these things would happen, as necessity proves.
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