Licence: Public Domain Mark
Credit: Sir Charles Wheatstone. Engraving by W. H. Mote, 1867. Wellcome Collection. Source: Wellcome Collection.
![no text alternative](https://iiif.wellcomecollection.org/image/V0006263/full/800%2C/0/default.jpg)
Licence: Public Domain Mark
Credit: Sir Charles Wheatstone. Engraving by W. H. Mote, 1867. Wellcome Collection. Source: Wellcome Collection.