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Men vainly seeking alchemical 'white' (mercurial) water in the ground and in trees. The white water is shown flowing from a hole in the tree.

Flamel writes: "at the foot [of a hollow oak] boyled a fountaine of white water, which ranne head-long downe into the depths, notwithstanding it first passed among the hands of infinite people, which digged in the Earth seeking for it; but because they were blinde, none of them knew it, except here and there one which considered the weight"