re 
just at the moment when 
Geology, &c. of the Connecticut. 47 
greater distance on the other. The broken fragments of 
the two rocks are confusedly mingled together, the sand- 
stone breaking into large tables, and the greenstone into 
pieces only a few inches across. These huge tables are 
covered and fringed with a great variety of cryptogamous 
plants, such as various species of Pamelia, Juggermannia, 
Sticta, Collema, Bartramia, Hypnum, Polypodium, nore 
a se most of which are Pans 
even dame of reeaberiag over the igen I ie 
never seen any rocks that seemed so congenial to the 
— cine gern plants as those constituting Mount 
But to return from = is igre ; ression. ; eget observer fol- 
will teeniin {this afin that the oroeiistotie besten pa 
under the sandstone. Yet any one acquainted with the 
anomalies of trap rocks will have the question arising in 
his mind, may not this greenstone, after all, here constitute 
an extensive dike? and he will hardly be satisfied until he 
sees the actual contact of the two rocks in place. One 
mile north-east of Sunderland meeting-house, the greater 
part of the greenstone ridge disappears and seems to ran 
under pe saee ones but here a few Preet of débris hide the 
al ia vA little farther south an actual junction — 
huge table o of sandstone resting on n the trap: 
a few feet from its original position. And, in- 
deed, I never knew ead 80 
equently disappointed, 
oo - be realized, as 
in persrinty Bee enn Rueetieaeif va rein here_ 
to teach the geologist a lesson of puiieiice: But, at. length, 
one mile wen a half south-east” a Sunderland meeting- | ee 
observer comes to a valley worn by a b 
where finding the greenstone, which thus far has preserved _ 
almost a etic tenon “tert s the east, aoa form 2a 
ing a reentering angle sandstone, gular 
point being i in the brodks ‘ hee will have little doubt that 
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