Licence: Public Domain Mark
Credit: Albrecht Daniel Thaer. Line engraving by A. Lefèvre after himself. Wellcome Collection. Source: Wellcome Collection.
![no text alternative](https://iiif.wellcomecollection.org/image/V0005768ER/full/800%2C/0/default.jpg)
Licence: Public Domain Mark
Credit: Albrecht Daniel Thaer. Line engraving by A. Lefèvre after himself. Wellcome Collection. Source: Wellcome Collection.