Orographic Conclusions. 263 
stone and schists at its eastern foot dip westward at a small 
angle—usually 20° to 25° (65° to 10° in the spur R); and also 
westward, but at a higher angie, in its highest summit, Mount 
Everett (E, on the map, 2,634 feet above the sea-level); while 
the former bringing up the limestone. Such flexures are not 
distinguishable in the schists unless sufficiently profound to 
bring up the limestone; for the dip is throughout to the east- 
ward; and hence there may be many of these subordinate 
anticlinals and synelinals in the broad mass where there is 
nothing to prove it. In the memoir referred to I have men- 
tioned some evidence that the Graylock mountain-mass, while 
a broad synclinal, comprises one or more subordinate anticlinals 
and synclinals. It is a point to be considered in the study of 
all mountain-masses consisting of steeply flexed rocks. 
In another place in this yolume, I speak of the Mt. Washington 
range in New Hampshire, east of the principal valley, as probably 
. 
corresponding to a synelinal, I would here add that it may be a 
