Plate 10 



Photo by W. J. r^Iiller, 1914 



A ledge of Grenville and granite mixed gneisses, two-thirds of a mile west 

 of the Long Lake bridge and similar to that shown in plate 9, but with two 

 veins of pure white quartz parallel to the foliation on the left and a dike of 

 pegmatite at the lower right. The pegmatite sharply cuts both the gneiss and 

 one of the quartz veins, the latter not being shown in the picture. The camera 

 was pointed downward to get the picture. 



