Optics: a colour-circle, after M. E. Chevreul. Colour aquatint (?) by R.H. Digeon, ca. 1868.
- Date:
- 1868
- Reference:
- 47500i
Licence: Public Domain Mark
Credit: Optics: a colour-circle, after M. E. Chevreul. Colour aquatint (?) by R.H. Digeon, ca. 1868. Wellcome Collection. Source: Wellcome Collection.
