"Time and Death their thoughts impart./ On works of learning and of art."
One man reads while the other sketches from the many busts which, if you look closely, display different expressions. Death has crept up with his hour glass and father time has come with his scythe.
From The English Dance of Death by Thomas Rowlandson, 1756-1827, British artist and caricaturist. His designs usually were done in outline with a reed pen and washed with color. They were then etched and aqua-tinted by a professional engraver.