the repeated visions of the kind, could now distinguish larger structures of manifold conformation: long rows, sometimes more closely fitted together; all twining and twisting in snake-like motion. But look! What was that? One of the snakes had seized hold of its own tail, and the form whirled mockingly before my eyes. As if by a flash of lightning I awoke; and this time also I spent the rest of the night in working out the consequences of the hypothesis. Ouroboros symbolism has been used to describe Kundalini energy . According to the second century Yoga Kundalini Upanishad , "The divine power, Kundalini, shines like the stem of a young lotus; like a snake, coiled round upon herself she holds her tail in her mouth and lies resting half asleep as the base of the body" (1.82). Another interpretation is that Kundalini equates to the entwined serpents of the caduceus , the entwined serpents representing medicine in the west or, esoterically, human DNA. It is a common belief among indigenous people of the tropical lowlands of South America that waters at the edge of the world-disc are encircled by a snake, often an anaconda, biting its own tail. [ 12 ] The image of Ouroboros is used by Jadran Mimica in his analysis of the Yagwoia psychology and worldview. E.g. "this is the archetypal, cosmic tree of life^death whose structural determination is ouroboric because, like the serpent that eats its own tail, this tree grows in-through-and-out-of-itself, ad infinitum." [ 13