32 QUARTERLY JOURNAL. 



and scored rocks. We are to put these two facts together, an 



when put together what do they teach us 1 first, that at a certai 



period some general agent was in force producing this very sc( 



ring, and which may be seen from the Atlantic to the Rock 



Mountains. Then immediately follows this marine deposit upc 



the grooved surfaces of these rocks. Now, then, this whole ecu: 



try is beneath an ocean. Submergence has taken place, and tl: 



portion of the earth is quiet beneath the waters, and deposits a 



going on ; shell fish of the same species as those now living up. 



our coasts occupy the bays and estuaries of this great sea. Then 



it regards a vertical movement, nothing need be said. The sea 



which this marine deposit was formed has retired, the plough ft 



rows those reclaimed fields, and maize grows where the My a sa: 



cava, scalaria and other shell fish lived and multiplied. Such ; 



some of the facts which, to say the least, bear favorably upon t 



hypothesis. And then again, by the admission of a vertical mo^ 



ment since the drift period, we certainly remove those obstructic 



which oppose the passage of an ocean over the tops of our hi^i 



est mountains in New-York and New-Hampshire, the scoring' 



whose rocks prove the passage in question. 



Mote 2. In connection with the above, we take thisopportur 

 to state that we have observed very interesting phenomena of ^ 

 kind which forms the subject of the above remarks, at Plattsbu^ 

 and Cumberland Head, on Lake Champlain. On searching 

 fossils at Plattsburgh, in August, 1844, in company with 

 friend, Ransom Cook, Esq., we had occasion to split off a tl : 

 layer of the Trenton limestone. On examining the lower surl ; 

 of the removed portion, we found it covered with relief li)i,^ 

 which led us to examine the surface from which it was ta)ih 

 when we found it scored with lines which corresponded with tl: 

 of the pieces which we had taken up. The scorings run east 

 west, or at right angles to those which we find on almost e\ 

 rock'in this state. So interesting did we deem these ancient m? 

 that we determined to search for them at other localities ; and) 

 are pleased in being able to state that we were successful in fp 

 ing the same stratum at Cumberland Head, four miles east, -t 

 both of these localities the rock is not only scored, but polis d 

 and worn down, showing conclusively the consolidation of jj, 



ll 



