BULL. GEOL. SOC. AM. 



VOL. 23, 1911, PL. 39 



Figure 1. — Moraixe of the Two Medicine Glacier of the Wisconsin Stage at a 

 Point 5 Miles northeast of Midvale, Montana 



Figure 2. — Glaciated Boulders in pre-Wisconsin glacial Till exi'osed at west 



End of Two Medicine Ridge 



PRE-WISCONSIN GLACIAL MATERIAL IN MONTANA 



