69 Geology, &c. of the Connecticut. 
or the trap, quitting the interval between two given beds 
of limestone or sandstone, makes it its way across the one 
immediately above or below, and then proceeds with a reg- 
=, as great between some other — of proximate 
strata” * (Transac. Geol. Soc. Vols. 3 and 4 
By treating the subject in this manner In mean no disre- 
spect to any of the distinguished men who have adopt- 
ed either side of this question. To President Cooper es- 
pecially, who regards the greenstone of the Connecticut as 
volcanic, I feel much indebted for the great mass of facts he 
has collected on the subject. And were @ adopt any hypoth- 
esis in regard to the origin of our greenstone, it would be one 
not much different from his. But I confess myself somewhat 
given = ee in regard to any general geological sys- 
tem extant; and Greenough on the First Principles of Ge- 
ology oe not aided much to remove my doubts. These 
systems have been productive of great good by spurring for- 
ward geologists to the collection of fats with a rapidity al- 
most unequalled in any other science. When these shall 
be still farther accumulated, it is hoped and may be poser 
ed, that a second Werner will arise, who, having not merely 
the rocks of Germany but of the whole world before him, 
and following the inductive method of Bacon, will be able 
to construct a system of geognosy that will stand, like the 
Newtonian system of gravitation, on a foundation too firm to 
be moved. Perhaps such a system, after all, will prove 
to be an amalgamation of the theories of Werner and Hutton, 
and those names, which now form the watch words of op- 
posing ranks, may descend to posterity, engraven side by 
side, in harmonious union, on the column that supports the 
system. If aa ee are not tending to this ep 
we are much rhista 
President Cooper was led from the profile inserted in the 
first Vol. of the Journal of Science, page 105, to conclude, 
the Deerfield greenstone to be a dike disrupting the old red 
sandstone. No distinction is there made between the sand- 
stone of the east and west range ; but since I have ascertain- 
ed that on the one side is old red sandstone and on the oth- 
*It is by no. means improbable that similar connecti oy dige Hee 
ae re: nt eT he places 
ve ex canned these beds, Hrcdintnions were Riera for 
pia h Ri the dikes had they existed, 
