118 R. A. Daly — Mechanics of Igneous Intrusion. 



mtM 



Fig. 1. 

 Bird's Eye and Black River Limestone ;" Ordovician. 



Intrusive granite. 



("Grr. ^-g,n Granite enclosing fragments of Archean — Zone of 

 Inclusions. 



("^•B. (3j, 'n Archean altered by the granitic intrusion and cut 

 by many dikes — Zone of Apophyses. 



Archean ; chiefly crystalline limestone and calc schists. 



Scale: 1:126,720. 



