Plate 7 of Khunrath Heinrich's (1560-1605) Amphitheatrum Sapientiae, purportedly one of the most significant books of theosophical alchemy and the occult sciences. Though the title page reads 1602, the book was not published until 1609. Erasmus Wohlfahrt edited and published the manuscript following Heinrich's death in 1605. Wohlfahrt also added a preface and conclusion. The work contains masterful engravings, remarkable for their execution as well as alchemical symbolism. Nine double-paged copperplate engravings, a title page, and a frontispiece can be found in the digital collections.

A highly-detailed circular engraving depicting an alchemist's laboratory using one-point perspective. The alchemist is seated in prayer in front of a tented shrine of holy books. At the center is a table of musical instruments. To the right of the image is a hooded stove; the mantel is lined with various bottles of ingredients.