A bald alchemist stands at his furnace on the right, stirring the contents of his crucible while reading a small book. Books and other apparatus are scattered on the floor. A young assistant stands near the furnace. In the background are three other assistants, two at a lab bench and one seen through an open trap door. On the left is a small dog lying near a large earthenware pot.
Signed "D.T. 1641" in lower right.
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Elecro-spray Ionization Mass Spectrometer
©2010 Chemical Heritage Foundation