Licence: Public Domain Mark
Credit: A swan on a lake. Coloured wood engraving by J. W. Whimper. Wellcome Collection. Source: Wellcome Collection.
![no text alternative](https://iiif.wellcomecollection.org/image/V0020510/full/800%2C/0/default.jpg)
Licence: Public Domain Mark
Credit: A swan on a lake. Coloured wood engraving by J. W. Whimper. Wellcome Collection. Source: Wellcome Collection.