[12] The situation of the cemetery, one of the characters of Prudden’s “unit type,” appears constant in one kiva buildings, but is variable in the pure type, and, as shown in the author’s application of the unit type to the crowded condition in Spruce-tree House and other cliff-houses, does not occur in the same position as in pueblos of the pure type open to the sky.

[13] In his valuable study, Pueblo Ruins of the Galisteo Basin, New Mexico (Anthrop. Papers of the Amer. Mus. Nat. Hist., vol. Xv, pt. 1, 1914), Mr. Nelson figures (Plan I, B) an embedded circular kiva in what he calls the “historic part” of the Galisteo Ruin, but does not state how he distinguishes the historic from the prehistoric part of this building. The other kivas at Galisteo are few in number and not embedded, but situated outside the house masses as in historic pueblos.

[14] Report of the exploring expedition from Santa Fe, New Mexico, to the Junction of the Grand and Green Rivers of the Great Colorado of the West in 1859, under the command of Capt. J. N. Macomb, p. 88, Washington, 1876.

[15] Memoirs Amer. Anthrop. Asso., vol. V, no. 1, 1918.

[16] Houses and House-life of the American Aborigines. Cont. N. Amer. Ethn., vol. IV, pp. 189-190, 1831.

[17] Prudden excavated a unit type ruin from one of the Mitchell Spring mounds. (Amer. Anthrop., vol. XVI, no. 1, 1914.)

[18] Op. cit., pp. 398-399.

[19] Op. cit., p. 190.

[20] Although the kivas of Mud Spring Ruin have not been excavated there is little doubt from surface indications that they belong to the unit type.

[21] Tenth Ann. Rept. U. S. Geol. Surv. Terr. (Hayden Survey) for 1876, pl. xlviii, fig. 2, 1879.