[10-†] Rambles by Land and Water, p. 145.
[11-*] Rambles by Land and Water, p. 203.
[12-*] Commerce of the Prairies, I, p. 165.
[12-†] Ibid. I, 270.
[12-‡] I am aware that the walls of the ancient Mexican and Peruvian edifices are often vertical; but where this is the case the pyramidal form is attained by piling, one on the other, successive tiers of masonry, each receding from the other and leaving a parapet or platform at its base.
[13-*] Commerce of the Prairies, I, p. 277.
[14-*] See my Inquiry into the Distinctive Characteristics of the Aboriginal Race of America, 2d edit., Philad. 1844.
[17-*] See Journal of the Antiquarian Society of Denmark, published in Copenhagen in the Danish language, vol. i, tab. 2, figs. 52, 53.
[17-†] Jour. Acad. Nat. Sciences of Philad., vol. viii.