History and What It Became

The moor's head is the still-head component of the same alembic tradition that produced the cucurbit and the retort, present already in the Greek alchemical writings of late antiquity and standardized in the Arabic alchemical corpus of the eighth and ninth centuries, where it is called simply the ra's, "head," of the still. Medieval Latin rendered the same idea as capitellum, "little head," the plain technical term used in Latin alchemical and pharmaceutical manuscripts. "Moor's head" is a later vernacular name, current in the illustrated Renaissance distilling manuals of the fifteenth and sixteenth centuries, including the woodcuts in editions of Hieronymus Brunschwig's distillation books, and it names the same domed cap rather than a different design.

As printed manuals like Brunschwig's spread the vocabulary of the distiller's workshop across Europe, named head shapes such as the moor's head and the more sharply tapered rosenhut let apothecaries specify exactly which cap a recipe called for. The component did not persist as a separately named object into modern chemistry; its condensing function was taken over first by other still-head shapes and eventually by the dedicated water-jacketed condenser, which does the same job of cooling a vapor back into liquid far more efficiently than any dome relying on ambient air alone.