Public Domain Mark
You can use this work for any purpose without restriction under copyright law. Read more about this licence.
Credit
A woman making gestures of speech, having a snake around her wrist and a parrot on her head, is standing in a market place with a court scene to her left and a verdict being read out to her right; representing Dialectic. Engraving after M. de Vos. Wellcome Collection. Public Domain Mark. Source: Wellcome Collection.