248 



of New YorJc, 1861), overlooking the remarks of Mr. Logan on the 

 Georgia Slates, includes the Georgia Slates in the Quebec group, adding 

 new confusion to an already very diffuse explanation. 



In a tabular view of my observations in the vicinity of Quebec, we 

 shall have the following theoretical section : — 



THEORETICAL SECTION OF THE ROCKS OF THE VICINITY OF 

 QUEBEC. 



Quartzites of Montmorency Falls. Its position in the Lower Taconic still undeter- 

 mined. 



