A man in a workshop with a hand over his eyes in anguish while dropping a sharp tool with the other hand; two details of eyes appear in the top corners. Line engraving.

Licence: Public Domain Mark

Credit: A man in a workshop with a hand over his eyes in anguish while dropping a sharp tool with the other hand; two details of eyes appear in the top corners. Line engraving. Wellcome Collection. Source: Wellcome Collection.