Detail of C.F.W. Ludwig's kymograph
Licence: Public Domain Mark
Credit: Detail of C.F.W. Ludwig's kymograph. Wellcome Collection. Source: Wellcome Collection.
![no text alternative](https://iiif.wellcomecollection.org/image/L0012394/full/800%2C/0/default.jpg)
Licence: Public Domain Mark
Credit: Detail of C.F.W. Ludwig's kymograph. Wellcome Collection. Source: Wellcome Collection.