Wood engraving by James Davis Cooper after Guillaume Benjamin Duchenne de Boulogne. As published in Charles Darwin's 'The Expression of the Emotions in Man and Animals',1872.
Darwin had requested that the electrical probes be removed that appeared in the original photographs.
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Wood engraving by James Davis Cooper after Guillaume Benjamin Duchenne de Boulogne. As published in Charles Darwin's 'The Expression of the Emotions in Man and Animals',1872.
Darwin had requested that the electrical probes be removed that appeared in the original photographs.
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