claeke.] ANALYSES OF BOOKS, U. S. GEOLOGICAL SURVEY. 295 
MISCELLANEOUS SANDSTONES. 
A. Triassic sandstone from the Jaittelle quarry, near Hancock, 
Maryland. Hard, compact, brown. Analysis by F. W. Clarke, record 
No. 613. 
B. Brown sandstone, Hummelstown, Pennsylvania. Analysis by 
E. A. Schneider, record No. 1280. Described by Diller in Bull. 150, 
p. 77. P. R. C. U. 
C. Yellow sandstone from Stony Point, Michigan. Analysis by 
F. W. Clarke, record No. 213. 
D. Carboniferous sandstone adjoining the peridotite dike of Elliott 
County, Kentucky. See Diller, Amer. Journ. Sci., 3d series, vol. 32, 
p. 125. Analysis by T. M. Chatard, record No. 354. 
E. Yellow sandstone, Armejo quarry, Colorado. Analysis, partial, 
by T. M. Chatard, record No. 289. 
A. 
B. 
c. 
I). 
E. 
Si0 2 
76.43 
| 17.78 
88. 13 
5.81 
1.77 
.31 
.53 
.20 
.06 
2.63 
.23 
.26 
84.57 
5.90 
6.48 
60.78 
10. 54 
3.27 
81.27 
ALO, 
9.81 
Fe,O q 
1.44 
FeO . . 
MgO 
CaO 
.92 
.84 
undet. 
undet. 
| 2.79 
.68 
undet. 
undet. 
1 1.92 
1.59 
10.15 
1.41 
2.36 
.85 
2.32 
.03 
.09 
.10 
6.29 
.42 
.44 
Na 2 
undet. 
K 2 
undet. 
H 2 at 100° 
| 1.19 
H 2 above 100°.. 
Ti0 2 
P 2 5 
MnO 
trace 
co 2 . 
Insol. inHCl 
98.76 
88.68 
99.93 
99.55 
91.87 
99. 78 

94.57 
95. 54 
