"With the conversion of Ashoka to Buddhism, Indian architecture began to throw off this alien influence, and to take its inspiration and it symbols from the new religion. The transition is evident in the great capital which is all that now remains of another Ashokan pillar, at Sarnath; here, in a composition of astonishing perfection, ranked by Sir John Marshall as equal to “anything of its kind in the ancient world,” we have four powerful lions, standing back to back on guard, and thoroughly Persian in form and countenance; but beneath them is a frieze of well-carved figures including so Indian a favorite as the elephant, and so Indian a symbol as the Buddhist Wheel of the Law; and under the frieze is a great stone lotus, formerly mistaken for a Persian bell-capital, but now accepted as the most ancient, universal and characteristic of all the symbols in Indian art. Represented upright, with the petals turned down and the pistil or seed-vessel showing, it stood for the womb of the world; or, as one of the fairest of nature’s manifestations, it served as the throne of a god. The lotus or water-lily symbol migrated with Buddhism, and permeated the art of China and Japan. A like form, used as a design for windows and doors, became the “horseshoe arch” of Ashokan vaults and domes, originally derived from the “covered wagon” curvature of Bengali thatched roofs supported by rods of bent bamboo."