Nature Magazine, Oct. 16, 1902.
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Nature Magazine, Oct. 16, 1902. Wellcome Collection. Source: Wellcome Collection.
![no text alternative](https://iiif.wellcomecollection.org/image/L0032703/full/800%2C/0/default.jpg)
Licence: Attribution 4.0 International (CC BY 4.0)
Credit: Nature Magazine, Oct. 16, 1902. Wellcome Collection. Source: Wellcome Collection.