16 Geology and Mineralogy of a part of Massachusetts, dc. 
Although I have spoken of the granular limestone as two 
ranges, | have avoided calling them strata, as there is 
nothing which prevents the ranges from being composed 
each of many extensive beds. Still this would not be the 
natural conclusion, though it may not be easy always to 
show the continuity of the beds. 
5 quartz rock. Cleaveland. 
Colored Vermilion Red. 
_ This rock occurs in beds. Jt forms hills, sometimes of 
miles in length, and from a few hundred to one thousand 
feet in elevation. It is often distinctly stratified, and the 
strata, often nearly perpendicular, have the general inclina- 
tion of the otherrocks. It is sometimes distinctly granular, 
and at others, compact and fine grained. It is generally 
associated with granular limestone, and is found with both 
the ranges of it. The white cliffs of Monument Mt., which 
add so much to the beauty of the scenery in view from the 
village in Stockbridge, is this rock. On the hill farther 
south, on which the monument is now to be seen,* the 
quartz is brownish. The hills of quartz rockft are com- 
monly precipitous on one side. The precipice at Monu- 
ment Mt. is onits eastern side. AtSheffield, Washington, 
and Williamstown, the precipices are on the west side of the 
hills. This rock is easily broken off at its numerous seams, 
and the bottom of the precipices is covered with fragments 
of froma small size to many tons in weight. Besides 
the general stratification, this rock is usually crossed by 
* The monument is a pile of quartz stones, containing several loads, collec- 
ted by the Indians. The tradition is that the stones were heaped over the 
body of afemale Indian, who was dashed in pieces by leaping from the 
cliffs above. This monument gives name to the mountain, and is only a 
few rods west of the highest part of the road, leading ‘rom Stockbridge to 
Great Barrington, which passes over this part of the mountain. On ex- 
amining the monument no bones were found under it. 
+ The hard surfaces of this rock seem to be the natural soil of several well 
known species of Gyrophora. At Monument Mt. and on Stone Hill, in Wil- 
liamstown, they are abundant upon it. Endocarpon miniatum, 1 have 
found only upon limestone. 
