Lithological Survey of Schehallien, 359 
beds chiefly on the NE. side of the mountain. Specific gra- 
vity = 2.6437. 
3. Ouartzy sandstone of a whitish gray colour with thin 
layers of mica. Specific gravity = 2.6296. 
4. Ouartzy sandstone. White colour with layers of mica. 
Much indurated. Somewhat ferruginous. Specific gravity =a 
2 .65367* 
5. Indurated sandstone with spiculae of mica interspersed. 
Specific gravity = 2.6460. 
6. Sandstone much indurated, vitreous shine, interspersed 
with mica. Specific gravity = 2.6269. 
7. Granular quartz from near the summit ; contains grains 
of felspar. Specific gravity = 2.6274. 
8. Granular quartz ; nearly the same with the preceding. 
Specific gravity = 2.6109. 
9. Sandstone fine grained, slightly marked with iron veins. 
Specific gravity = 2.6296. 
10. Sandstone fine grained, more indurated than the pre- 
ceding. Specific gravity = 2.6576. 
11. Sandstone containing calcareous matter. Specific gra- 
vity = 2.6636. 
12. Granular quartz, very compact and indurated, but of a 
stratified structure ; a little mica in thin plates. From a mean 
of several. Specific gravity = 2.6452. 
13. Granular quartz of a flesh colour; imperfect crystals 
of felspar thinly disseminated. This specimen from near the 
top. From a mean of several peices. Specific gravity = 
2.6387. 
The mean of these thirteen specimens gives 2.6398 for the 
upper or quartzy part of the mountain. 
