Vessel symbolism occupies a structurally central position in depth-psychological discourse, functioning simultaneously as an archetypal image, an alchemical technical term, and a philosophical concept of the first order. Neumann’s exhaustive treatment in The Great Mother establishes the female body-vessel as the primary morphological template: womb, belly, mouth, and breast constitute the phenomenological grammar through which the containing character of the Archetypal Feminine is articulated across cultures and millennia. Jung, by contrast, approaches the vessel through the vas Hermeticum of alchemical tradition, where the retort is not merely a laboratory utensil but a mystical symbol coextensive with its contents — the vas and the lapis become interchangeable faces of the same arcanum. This equivalence ramifies: the vessel is world-body, cranium, soul-sphere, mandala, and uterus of the filius philosophorum. Campbell amplifies Jung’s reading, stressing the vas mirabile as a virginal womb fertilized by Mercurius. The I Ching’s Ting hexagram introduces a parallel stream, where the sacred bronze cauldron enacts imaginative containment and transformation on a cosmological scale. Abraham’s lexicographic attention to the alembic, cucurbit, and their shifting names across the stages of the opus reminds us that the vessel’s identity is processual, not fixed. The principal tension in the corpus runs between vessel as static container — the maternal, elementary character — and vessel as dynamic transformer, the site where prima materia undergoes its essential mutation.