﻿Fig. 1. — Blind veins, above the boathouse. 

















i Foot 







[The one on the right can be traced for about 7 feet ; it runs perfectly- 

 straight, and is 1 inch wide. Within 5 inches it thins out and terminates.] 



Fig. 2. — Branching, and a blind vein,, seen 

 near the boathouse. 



[The broken lines indicate the foliation of the granite.] 



