Statistics for occurrence #1 of “Nile” in book 6, card 773 of P. Vergilius Maro, Aeneid:
...las' shoulder bears
Yon dome of heaven set thick with burning stars.
Against his coming the far Caspian shores
Break forth in oracles; the Maeotian land
Trembles, and all the seven-fold mouths of Nile .
...