Wonderfully vintage, public domain drawing depicting the metaphor of time flying. This time flies illustration shows a pair of wings on a draining hourglass. I bet it would look great in a Steampunk or mixed media piece. Of course, as a time flies metaphor image this is a really sharp one.
A Book of Emblems with Interpretations Thereof was written by Alfred Gatty (1809-1873) and published in 1872. This may be a stock or original image used by Bell and Daldy publishers of London.
This image is copyright free and in the public domain anywhere that extends copyrights 70 years after death or at least 120 years after publication when the original illustrator is unknown.