planctus naturae: The Complaint of Nature against the Erronious Alchymist

various alchemical vessels: alembics (stills), sublimating vessels (for converting a substance to a vapor then, upon cooling, to a solid); gourd-shaped retorts; more stills, alembics with two curved tubes proceeding from the head back into the body of the vessel (pelican shaped, used in distilling liquors by fermentation). pseudo-jean de meun (notes on text, 39-41)