An iatrochemist performs a uroscopy while other activities take place in his workshop. A woman is waiting for the diagnosis, having brought him the flask of urine in the wicker basket seen hanging from her right arm. Celestial and terrestrial globes, a hanging reptile, a seated dog, and alchemical apparatus are seen throughout the workshop. In the background are four assistants working near the hearth. In the right foreground a young man is working the bellows.
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Merck litmus paper, 1934
©2010 Chemical Heritage Foundation