Ill 



Continuation of Column No. 5. 

 TABLE V. 





23 



Silurian Rocks. 



j 



-- 







1. Upper Silurian. This series contains more i 



-2. 







than four species of Trilobiles, one Univalve, and \ 









some Radiata. \ 









2. Middle Silurian, contains more than fifteen \ 









species of Trilobites, with Eurypterus remipes ; I 



;| 







ten species of Polyparia, one Fucoides, three Cri- > 









noidea, more than seventeen Bivalves, and fourteen \ 









Univalves. \ 



3 







3. Lower Silurian, contains about nine Trilo- i 



■- 







bites, three Fucoides, two Polyparia, one Radiata, I 



>. 







twelve Bivalves, five Univalves. This series is \ 



— 







found west of the Alleghanies, exiending from s 









Canada, through New York, Pennsylvania, and I 









Ohio to Kentucky ; further to the southwest it has l 



£ 







not yet been mentioned. 



; 3* 



24 



Volcanic Rocks. 





= 







The principal localities are the Palisades, west i 









side of the Hudson River, New Jersey ; Passaic 5 









Falls, Patterson, New Jersey ; East and West j 



5 







Rocks, New Haven, Connecticut ; The Subterra- \ 



5 







nean Wall, North Carolina. 1 





25 



Metamorphic Rocks 



. 



--. 







Eastern States. One ridg-e of the Alleghanies 



- 







from New Hampshire to Alabama. j 



£ 



L 





Plutonic Rocks. 



Localities same as the Metamorphic Rocks. 1 



