MICHIGAN ACADEMY OF SCIENCE. 135 



cliff, and the marginal drainage, which evidently was on the present land 

 surface and not in the ice. 



It is apparent, therefore, that the chief contentions are, that the glacial 

 ice from the northeast did not move across the higher parts of the Laiiren- 

 tian highland, but lay banked around it in a nearl}^ stagnant condition, hence 

 there was little glacial erosion, even on the lower slopes along the shores of 

 Lake Superior, and practically no glaciation of any sort in the highlands, 

 while above the highest moraines the country is nearly driftless. The same 

 stagnation apparently prevailed in the ice-field as far west as the axis of 

 Keweenaw point, and this ice was further prevented from penetrating inland, 

 south of the highland, by a strong ice-stream pushing in from the northwest, 

 on the west side of the Keweenaw peninsula. 



Ann Arbor, Mich., March, 1907. 



