Gustave Henri Jossot
Drawing of the devil, 1903.
Image found in this collection of Jossot artworks.
Formaldehyde Drinker in L'Assiette au Beurre 1907 - "A frightening caricature by the anarchist artist Jossot, showing a deranged mortician drinking formaldehyde used to preserve a dead foetus."
There are a handful of color lithographs by Jossot depicting living skeletons here.
To see more work by Jossot browse through copies of L'Assiette au Beurre.
Read more on Jossot at Wikipedia..