http://www.kunsthaus.ch/en/the-collection/conservation/examples-from-the-world-of-art-conservation/technical-analysis/contour-lines-on-the-hands-of-the-right-hand-figure/?redirect_url=title%3DPhases

Kunsthaus Zürich

Ferdinand Hodler

Technical analysis

Contour lines on the hands of the right-hand figure
Contour lines on the hands of the right-hand figure