It causes me to muse over whether alchemy was a later effort to create a vessel similar to the uterus and an entire set of symbols and actions that would give some proximity to the cycles of menses, gravida, delivery, and nursing.
Estés proposes that the uterus, through its menstrual and reproductive cycles encoded in black-red-white symbolism, may be the primordial archetype from which alchemical symbolism itself derived.
, Women Who Run With the Wolves Myths and Stories of the Wild, 2017thesis