IDAHO, UTAH.

A. Adobe soil, Salt Lake City, Utah. Analysis by L. G. Eakins, record No. 996.

B. Lava soil, near Shoshone Falls, Idaho. Described by Russell in Bull. 199. Analysis by W. F. Hillebrand, record No. 1950.

NEW MEXICO, ARIZONA.

A. Adobe soil, Santa Fe, New Mexico.

B. Adobe soil, Fort Wingate, New Mexico.
Analyses A and B by L. G. Eakins, record No. 981.
C. Clay, Salt River Valley, Arizona.

D. Clay, about 1 mile from C.

Analyses C, D, by E. T. Allen, record Nos. 1945, 1959.

NEVADA.

A. Grayish clay from Upper Lahontan lake beds, Humboldt River bridge, Mill City.

B. Grayish clay, Lower Lahontan beds, same locality. Analyses by T. M. Chatard, record Nos. 32, 33.

C. Adobe soil, Humboldt. Analysis by L. G. Eakins, record No.

981.

D. Halloysite, pale greenish, Lucia mining district, Elko County. Analysis by George Steiger, record No. 1472.

CALIFORNIA, WASHINGTON, HAWAIIAN ISLANDS.

A. Sandy clay, Owens Lake, California.

B. Blue clay, Owens Lake, California. Analyses by T. M. Chatard,
record No. 551.

C. Clay from foot of Rickey Hill, Kittle Falls, Stevens County,
Washington. Analysis by W. F. Hillebrand, record No. 1428.

D. Typical wheat soil, plateau south of Krupp, Washington.

E. Residuary soil from basalt, Hausen Creek, Kittitas County,
Washington. Analyses D and E by George Steiger, record No. 2028.
F. Lava soil, Diamond Head, Hawaiian Islands. Analysis by L. G.
Eakins, record No. 888.