In this unusual sheet, the etching for one of the plates in the Liber Studiorum has been printed over the top of Turner's watercolour. Turner etched some of the plates for this project himself, but it is
not clear why this etching was printed
in this way.
This classical subject was assigned to
the category of historical landscape. In Ovid's Metamorphoses, Aesacus was a young man who was turned into a diving bird in order to thwart his attempts to kill himself for the love of Hesperie.