Pasteur's portrait by Edelfelt
Pasteur's portrait by Edelfelt is the best-known portrait of the French chemist Louis Pasteur. Painted by Albert Edelfelt (1854–1905) in 1885, the painting shows Pasteur in his laboratory at the rue d'Ulm, surrounded by his experimental apparatus, the innovative laboratory glassware used in the experimental methods, developed by him on the field of bacteriology in the late 19th century.
Source: Wikipedia — Pasteur's portrait by Edelfelt (CC BY-SA 4.0)