42 J. D. Dana— Geology of Vermont and Berkshire. 
much like that of the north end of Tom Ball, as shown in 
figure 5, by Emmons, here repeated.* The same structure 
exists in Mount Washington in Southwestern Massachusetts, 
the next highest summit of the range. At the eastern foot o 
this mountain the limestone dips westward at a small angle, 
(25° to 30°), beneath the chloritic hydromica slate, as I have 
escribed in a former article;+ and the more eastern and 
highest peak of the mountain, called Mt. Everett, partakes of 
Half mile N. of Housatonic, 
west of the Old Furnace. 
? 
P 
. In my examinations in Copake I had the guidance 
of Mr. William Miles, who had thoroughly explored the lime- 
stone localities. Besides the many conformable outcrops over 
the interior of the valley, there were others of large extent 
close to the slate of the mountains, and one where the lime- 
stone and slate were seen in contact. : 
Again, half a mile north of Housatonic, west of the river, 
the section in fig. 6 is seen in an abandoned quarry. The 
limestone dips 10° to 25°, and passes beneath mica slate. In 
‘online. 
Canaan Mountain. Falls Village, Canaan. Hill west of the village of 
Southwest Front. West side of river. Tyringham. 
Canaan Mountain, Connecticut, in the southwest front there are 
150 feet of limestone at base, dipping 15° to 20° to the east- 
under a mica schist containing garnets and staurolites. The 
mica schist forms the upper part of the hill and the limestone 
outcrops toward its base. 
* See last volume of this Journal, p. 347. + This Journal, III, vi, 266, 1873. 
