no text alternative

Download


License information

You can use this work for any purpose, including commercial uses, without restriction under copyright law. You should also provide attribution to the original work, source and licence.
Creative Commons Attribution (CC BY 4.0) terms and conditions https://creativecommons.org/licenses/by/4.0

Credit

A humorous image of two men wearing revolving top hats with several attachments for optical aids and tobacco etc. Coloured etching.. Credit: Wellcome Collection. Attribution 4.0 International (CC BY 4.0)