Licence: Public Domain Mark
Credit: Nathaniel St André. Line engraving by R. Grave (Graves). Wellcome Collection. Source: Wellcome Collection.
![no text alternative](https://iiif.wellcomecollection.org/image/M0016713/full/800%2C/0/default.jpg)
Licence: Public Domain Mark
Credit: Nathaniel St André. Line engraving by R. Grave (Graves). Wellcome Collection. Source: Wellcome Collection.