No. 3.] BILLINGS — ON THE TACONIO CONTROVERSY. 313 



REMARKS ON THE TACONIC CONTROVERSY. 



By E. Billings, F.G.S. 



Table of tlie SUuricin formations of New York and Canada 

 as recognized preciously to 1859. 



UPPER SILURIAN. 



16 Lower Helderberg. 



15 Onondaga. 



1-t GiK'Iph. 



13 Niagara. 



12 Clinton. 



11 Medina. 



10 Oneida. 



LOWER SILUEIAN. 



9 Grey sandstone. 



8 Hudson River. 



7 Utica. 



6 Trenton. 



5 Black. River. 



4 Birdseye. 



3 Chazy. 



2 Calciferous. 



I Potsdam. 



} 



} 



The Red Sandrock of Vermont wa.s originally 

 })laced about ht-re by Dr. Emmons, followed by 

 Adams, Rogers, and olh 'rs. It was afterwards 

 referred to a horizon near the Potsdam by Dr. 

 Emmons and E. Billings. 



Position of the Taconic rocks and Quebec 

 group according to Prof. Hall and oihers. At 

 tirst adopted, but rejected by the Canadian 

 Survey in 1860. 



Approximate horizon of the Quebec group as 

 decided by iSirVV . E. Logan & E. Billings in 1860 



= ' Position of the Red Sandrock of Vermont 

 (nearly)accordingto Dr. Emmons & E. Billings 



TACONIC SYSTEM. = Position of the Taconic System according to 



Dr. Emmons. 



It frequently happens that a science, such for instance as that 

 •of freology, possesses a sort of an aristocracy, consisting of the 

 most talented, learned, active and influential of its devotees. 

 The views of this body of men. on any difficult problem that 

 may present itself, are usually regarded as conclusive, and are 

 quietly adopted by the less distinguished members. Indeed, the 

 opinion of any one of these latter, would be scarcely listened to, 

 provided it should Ijappen to be contrary to the established creeci 



