Licence: Public Domain Mark
Credit: Tusk of the narwhal (Monodon monoceros), or horn of the unicorn. Wellcome Collection. Source: Wellcome Collection.
![no text alternative](https://iiif.wellcomecollection.org/image/V0018439/full/800%2C/0/default.jpg)
Licence: Public Domain Mark
Credit: Tusk of the narwhal (Monodon monoceros), or horn of the unicorn. Wellcome Collection. Source: Wellcome Collection.