38 Geology, &c. of the Connecticut. 
yet it seemed to deserve a place on the map, anda descrip- 
tion Koa 4 
11. Verp Antique.—Cleaveland. — “a 
chlorite slate, with which it sometimes alternates. I am 
inclined, however, to the opinion, that the slate lying im- 
mediately contiguous to the Verd Antique, although not 
well characterised, approaches nearest to greenstone 
slate. Yet, decided chlorite slate, appears usually only a 
few rods distant. In some places, the Verd Antique is a 
quarter of a mile in width, and forms ledges of considera- 
ble elevation and extent. It is stratified—the layers being 
thick and parallel to the slate rock enclosing it. The grain 
is fine; the rock is traversed by veins of calcareous 
spar, magnesian carbonate of lime, and asbestus; and 
is associated with chromate of iron and magnetic oxide 
of iron, diffused, more or less, through the entire body of 
e marble, and forming dark spots and clouds. The ser- 
pentine is twisted and entangled in the limestone in almost 
every form, and the green color of the rock may in gene- 
