8o 



A NATURALIST IN THE GREAT LAKES REGION 



(Atchison, Topeka & Santa Fe Railway) and to the north of 

 La Grange (Chicago, Burhngton & Quincy Railroad) it is par- 

 ticularly plain, marked by steep cHffs that have been more or 

 less obscured by the later erosion and deposits. Galewood 

 and Norwood Park are on it. Thence it runs northeast and 



Fig. 49. — An old shore line of Lake Chicago 



terminates in the Chicago region at the present lake shore in 

 high bluffs at Winnetka. 



In the northern part of Winnetka, a short distance south of the pumping 

 station, the cliff and terrace of the Glenwood stage appear halfway up the 

 lake cliff and extend inland with pronounced form for three-quarters of a 

 mile. The terrace is about 55 feet above Lake Michigan .... behind it 

 the bluff rises to a height of 20-30 feet, with a very steep slope. 



To the east of Glenwood the shore line swings southeast toward 

 the lake, passes through Furnessville, runs roughly parallel to 

 the present shore, and abuts on the shore north of New Buffalo. 

 Notice Desplaines Bay on the map (Fig. 53), into which the 

 river now bearing that name then emptied. See also the sand 



