[156] Bellucci, “Il feticismo primitivo in Italia,” Perugia, 1907, pp. 25, 26.

[157] Volmar, “Steinbuch,” ed. by Hans Lambel, Heilbronn, 1877, p. 19.

[158] De Boot, “Gemmarum et lapidum historia,” Lug. Bat., 1636, pp. 266-268.

[159] De Boot, “Gemmarum et lapidum historia,” Lug. Bat., 1636, pp. 169, 170.

[160] De Boot, l. c., p. 270.

[161] Hendley, “Indian Jewelry,” London, 1909, p. 158.

[162] Kunz, “Gems and Precious Stones of North America,” New York, 1890, pp. 61, 62, pl. opposite p. 56.

[163] Kunz, l. c., see pl. 2, fig. A.

[164] Pepper, “The Exploration of a Burial-room in Pueblo Bonito, New Mexico,” Putnam Anniversary Volume, New York, 1909, pp. 196-252.

[165] Pepper, “The Exploration of a Burial-room in Pueblo Bonito, New Mexico,” pp. 223, 224.