107 



Continuation of Column No, 5. 



TABLE V. 



16 



3 



17 



l a, 

 Z 



19 



Oolite. 



This rock has not as yet been found in North - 

 America, but Mr. Lea has described some fossils 

 from New Grenada in South America, as belong- 

 ing to the series. 



The Oolite of Cumberland Mountains, described 

 by Dr. Troost, I think is the same as the Roe Stone, 

 which is very abundant in the upper part of Sussex 

 County, New Jersey, and at Saratoga in the Stale 

 of Now York, and belongs to the rocks of the Si- 

 lurian series. Mr. T VV. Storrow brought from 

 Illinois, a sDecimen of Roe Stone which is very dif- 

 ferent from those brought from the above-mention- 

 ed localities. This may prove to be a true Oolite. 



Lias or Jura Formation. 



None in North America. 



iEsopus Millstone, 



(Potomac Marble, of Rogers.) This is a coarse 

 conglomerate, with a calcareous cement ; it com- 

 mences at Shawanjunk Mountains, New York 

 Slate, running through Sussex Co. in New Jersey, 

 and ending on the Potomac, where it is called 

 "Potomac Marble." The nearest locality to the 

 City of New York is at Ramapo River, near 

 Pompton, New Jersey. See plate 8. 



Upper Red Sandstone. 



This Sandstone is very abundant in the Western 

 States, overlaying the Bituminous Coal. 



At Cumberland Mountains, Little Rock Castle 

 Creek, Kentucky, and in many other places it con- 

 tains fossil vegetables, such as Palms, Ferns, &c. 



