CLARKE.] 
IGNEOUS AND CRYSTALLINE ROCKS. 
259 
K. Hypersthene basalt, Anna Creek. Andose-heerbachose. Contains 
plagioelase, augite, hypersthene, olivine, and magnetite. P. R. C. 1320. 
L. Hypersthene basalt of andesitic type, north of Desert Cove. 
Ton (ilo.se. Contains plagioelase, hypersthene, augite, and olivine. 
M. Dark secretion from among dacitic ejectamenta, summit of Llao 
Hock. Tonalose-andose. Contains plagioelase, hornblende, hyper- 
sthene, and augite, with a little olivine and apatite, in a dark-brown 
glassy groundmass. P. R. C. 1318. 
N. Light-colored secretion from among dacitic ejectamenta, south- 
ern rim of crater, between Sand and Anna creeks. Lassenose. Con- 
tains plagioelase, hypersthene, augite, hornblende, biotite, and quartz. 
P. R. C. 1319. 
O. Basalt, one mile east of the summit of the Cascade Range, on the 
road from Fort Klamath to Crater Lake. Beerbachose. Described by 
J. 8. Diller as a typical basalt, carrying a considerable amount of 
hypersthene. Analysis by W. F. Hillebrand, record No. §08. 
Si0 2 
A1A 
Fe 2 3 
FeO 
MgO 
CaO 
Na 2 
K 2 
11,0 at 110°... 
H 2 above 110 
Ti0 2 
PA 
s 
MnO 
BaO 
SrO 
K. 
56. 95 
18.84 
2.06 
4.28 
4.37 
7.45 
3.89 
.82 
.19 
.31 
.79 
.19 
trace 
trace 
.04 
trace 
100.18 
L. 
58. 65 
18. 35 
1.59 
4.21 
3.49 
6.95 
3.70 
1.32 
.20 
.70 
.81 
.17 
none 
trace 
.06 
trace 
100.20 
56. 85 
18.31 
2.88 
3.15 
3.92 
7.20 
3.89 
1.23 
.16 
.95 
1.08 
.22 
none 
trace 
.04 
trace 
99. 88 
67.41 
15. 76 
1.88 
1.76 
1.35 
3.36 
4.54 
2.36 
.09 
.54 
.56 
.12 
.02 
trace 
.06 
trace 
99.81 
0. 
57.47 
18.86 
2.21 
4.08 
4.27 
7.42 
3.85 
.73 
.22 
.75 
.24 
.10 
.03 
.11 
100.34 
C0 2 , Cr 2 3 , and Li 2 U were absent from all live. 
