In Hell, Dante and Virgil see a thief, in the guise of a serpent ‘all on fire’, preparing to attack another thief, named Buoso de’Donati.
Here Blake’s figures show subtle effects of light and shade, particularly in their flesh tones. He used small brushstrokes of red, blue and black for this, laying the colours side by side rather than mixing them. The robber Donati (right) is about to be punished by being turned into a serpent. Blake’s technique and colour give form to his figure, but the blue also shows human life draining away into coldness.