206 J. D. Dana—Geology of Vermont and Berkshire. 
or areas of high land are synelinals, a rule exemplified exten- 
sively in the continuation of the Appalachians from Pennsyl- 
vania to Alabama, where the facts are little obscured by -meta- 
morphism. The position of the limestone beneath the quartzyte 
and schists aloug the Konkaput is then the original position. 
_ This underlying of the thick quartzyte and schists by lime- 
stone appears to be a fact in many other parts of the Berkshire 
region, as in Monument Mountain, in quartzyte ridges east of 
om Ball, and elsewhere, though these examples are not as 
free as the above mentioned from other supposable explana- 
tions. The evidence is complete with or without them, that 
the quartzyte and the associated schists in some prominent cases 
in Berkshire, if not all, overlies limestone. In such cases, ac- 
cordingly, the limestone is the older formation of the two; and 
this is as true for Vermont as for Berkshire. And where so in 
either State the quartzyte and the associated schists constitute 
