We can know the life of vanished continents by the still surviving trees growing in our gardens and forests. We can discover the traces of a once more active plant-life in the microscopic plants that can be found in any stagnant pool of water, swimming and darting around for food like the animals. The scrubby desert tea, found on all continents, is but an after-thought of the same great stock which formed the giant redwoods, pines and cedars. The low club mosses we carelessly crush under our feet on some hillside were once huge trees that formed the coal forests of two hundred million years ago.The simplest events of nature, when understood, are acts of white magic. The change of the dragon fly from the crawling, brown water-nymph clinging to the bottom of a pool to the glittering, winged adult of the air, is a living symbol of the transition of the human soul from plane to plane.In fact everything, in its form and habits, reveals its inner nature, and in so doing becomes a living symbol of abstract and spiritual qualities. It is the recognition of this which has led to the adoption of natural forms as a kind of universal symbolic language. Thus, in ancient times, a white lily suggested purity; a red rose, Love; the spring anemone, Frailty; the crocus, Cheerfulness; the laurel, Victory; and the olive branch, Peace.