MERWIN: SHORE-LINES. 313 
The sketch map (Fig. 1.) shows the glacial striae observed around 
the base of Shefford Mountain. The directions of the striae on the 
convex north slopes of this isolated mountain are consistent with the 
idea that the main current of ice at the time the striae were made, 
was west of the mountain, and was directed southward along the axis 
of the Champlain valley. In this case the striae on the south (lee) side 
of the mountain might be crossed in directions, as they are found to be. 
a \ Shefford Mt. PO, 
x 
Shefford Mb. 
oN ae 
W Shefford 
Station 
Pye 
Glacial Striae, thus NN 
Fic. 1.— Map of glacial striae on the upturned sedimentary rocks around the base of 
Shefford Mt., Quebec. 
In each valley of northwestern Vermont the glacial striae lie nearly 
parallel with the axis of the valley, whether the valley is longi- 
tudinal or transverse. There is, however, a well-marked tendency 
toward a N. W.-S. E. direction, if the striae are all considered to- 
gether. This is good evidence that there was a strong movement 
of ice southward in the Champlain valley after the region just east 
