Regenwurm, Wall Chart Earth Worm, by Dr. Paul Pfurtscheller, 1906 This process is what gives

This process is what gives lithographs their depth and longevity to their colors

Antique large-scale wall chart of the anatomy of the "Lithobius forficatus

mounted on canvas and fixed to wooden dowels

Pichler's Witwe & Sohn' presumably

Lithography of course is an enormously demanding technique

Regenwurm, Wall Chart Earth Worm, by Dr. Paul Pfurtscheller, 1906 This process is what givesABOUT Vintage large scale wall chart of the anatomy of the "Lumbricus sp." (Vermes II, Chaetopoda). Lithograph on two sheets of paper, mounted on canvas. Bright colors, some creasing, slight discoloration, cracks at center top, protective tape at the edges, but overall very good vintage condition considering its age and use. Author and illustrator was Prof. Dr. Paul Pfurtscheller. Pfurtscheller (1855 1927) produced a series of 39 "Zoologische