U.S. GEOLOGICAL SURVEY. 



MONOGRAPH XXV. PL. XX. 



MAP SHOWN'G TIffi EXTENT OF LAIffi AGASSIZ AT THE TIMES OF FORMATION OF THE ITASCA AND MESABI MORAINES. 



Scale , about 't? miles to an inch . 



iVi-eH ol' l.sikf Agassiz coiitcmporanedus mth the IlascaMoruine I 1 Area ndrted at the time of the Mesabi Moraine I 1 



Ilascadenthland Mcsabi (eleveiithi Moraines I 1 



