OF THE NORTHWESTERN STATES. 



23 



Bad 



River 



Abstract of the Bearing oe the Stri^iE. 



Field of observation. 

 Minnesota. 



Dog Lake .... 



Lake of a Thousand Islands 



Rainy Lake .... 



North shore of Lake Superior . 

 Wisconsin. 



Ashland County, Penokie Range 



Do. do. near 



Lake Winnebago and Sheboygan 



Valley of Menomonee River . 

 Michigan. 



North shore of Lake Michigan 



Isle Royal 



Point Keweenaw and Keweenaw Bay 



Marquette County . 

 Ohio. 



Northeastern Counties 



Sandusky .... 



Dayton .... 

 New York. 



Rochester 



Valley of St. Lawrence . 



Valley of Hudson River . 

 Massachusetts. 



Valley of Connecticut River 



Boston .... 

 Vermont. 



Canada Line . 



Lake Champlain 

 Maine. 



Valley of Kennebec ...... Numerous 



So far as this record goes there is a general agreement between the bearings of 

 the drift-strise, grooves, and furrows, and the course of valleys in which they are 

 situated. The height of the land on the line A B of my section is nowhere so great 

 as it is in New England or on the Alleghany mountains. I know of no points in 

 the vicinity of the section where the land rises much above it. In the northwest, 

 therefore, there are no such marked elevations or mountain ranges as would very 

 much obstruct the glacial movement. But whether the obstruction was greater or 

 less, the direction of the striae shows that the movement, as was natural, pursued the 

 lowest existing channels. In its general course up the valley of the St. Lawrence 

 the high lands of New England and Northern New York, rising five thousand to six 

 thousand feet above the ocean, operated as a barrier. It found a partial outlet in 

 the north and south valleys of Lake Champlain and of the Connecticut river, while 

 the heights in which the Alleghany mountains terminate, rising eighteen hundred 

 to two thousand feet above tide water, presented another obstruction. 



On Lake Superior there is a remarkable uniformity in the bearing of the glacial 



Number of 

 observations. 



Resultant bearing 

 of the group. 



1 

 1 

 1 

 1 



South 10° west. 

 South 5 " 

 South 50 " 

 South 46 " 



2 



2 

 4 

 3 



South 45° east.* 

 North and south 

 South 45° west. 

 South 65 " 



4 

 3 

 4 

 8 



South 80° west. 

 South 40 " 

 South 38 " 

 South 32 " 



9 

 3 



1 



South 26° east. 

 South 80 " 

 South 26 " 



1 



Several. 

 Several. 



South 30° west. 

 South 45 " 

 South 5 east. 



Very numerous. 

 Very numerous. 



South 8io east. 

 South 20 " 



Numerous. 

 Numerous. 



South 20° west. 

 South 30 east. 



Numerous. 



South 150 east. 



In a gorge at right angles to the range. 



