clarke.] CLAYS AND SOILS, 3(59 
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. 
Isi. 
I), llaUoysite, pale greenish, Lucia mining district, Elko County. 
Analysis by George Steiger, record No. 1472. 
A. 
B. 
c. 
D. 
SiO, - - - 
56. 30 
16. 52 
5.08 
50. 70 
| 19.01 
44.64 
13. 19 
5.12 
42.11 
Al.,0 
33. 83 
Fe 2 (). 
.04 
FeO 
.28 
MgO 
2.64 
5. 45 
2.60 
2. 17 
► 9. 78 
3. 19 
10.26 
1.91 
2.16 
13.03 
2. 96 
13.91 
.59 
1.71 
- 3.89 
.94 
.13 
. 30 
CaO 
Na.,( ) 
K 2 
H,0 at 100° 
6. 54 
H.,0 at 200° 
1.07 
H.,0 at 300° _ _ 
H.,0, ignition 
1.26 
12. 01 
P 2 3 
trace 
Mn( ) 
CuO 
2.83 
CO, ." 
8.55 
.64 
. 14 
3. 43 
so 3 
CI 
Organic matter 
100. 54 
100. 26 
99. XI 
100.63 
Bull. 228-04 24 
