Plate 7 







W. J. Miller , pho to. 



A mass of highly folded Grenville white limestone 25 feet wide 

 surrounded by granite. By the river opposite Thurman. 





W. J. Miller, photo. 



B A ledge of typical Grenville (or metagalbro) -granite mixed rock 

 by the main road i mile east-southeast of Linwood school. The light gray, 

 garnetiferous gneiss is distinctly banded. 



