U. S. GEOLOGICAL SURVEY 
BULLETIN NO. 272 PL. VIII 
A. GLACIAL BOWLDER OF QUARTZITE RESTING ON MARBLE. 
West foot of Tacnic Range, 1 f miles southwest of Pittsford Village, Vt. Looking south 
B. GLACIAL FURROW IN WHITE MARBLE. 
Two miles west-northwest of Pittsford, Vt. The marble is in close, erect folds, striking N. 20° W. The 
course of the furrow is S. 20° E. On the marble are 20 feet of clays probably deposited by a glacial 
lake. 
