Trans. Wis. Acad., Vol. XIII. 



Plate IX. 



rtr 



A 



-f" \ 



«y 



. ma^'" 





r?/' 



V 



ilC. i. 

 Ridge of sand formed on shore of Lake Monona by the ice shove. 





' ^'^,^ 



"%« 



w 



. "H 



FIG. 2. 

 A near view of ridge shown in Fig. I. 



