Note 224 — Chapter VI

"In both Americas it is a matter of inquiry what was the intention of the natives when they raised so many artificial hills, several of which appear to have served neither as mounds, nor watch-towers, nor the base of a temple. A custom established in Eastern Asia may throw some light on this important question. Two thousand three hundred years before our era, sacrifices were offered in China to the Supreme Being, Chan-Ty, on four great mountains called the Four Yo. The sovereigns, finding it inconvenient to go thither in person, caused eminences representing these mountains to be erected by the hands of men near their habitations."—Voyage of Lord Macartney, vol. i., p. 58; Hager, Monument of Yu, p. 10, 1802.