U.S. GEOLOGICAL SURVEY. 



MONOGRAPH XXV. PL . X 





.tJrami island 



^^ of Laie JVdassiz ' 



'Tl 



MAI^ \MTri ALTrrxniKS of the SOUTHEEIN portion of LAKl^ AtiASSIZ EXPLORED 

 WITH LEVEI.LINOIN MINNESOTA. XORTH D^VIOTTA, ANTD MANITOBA. 



Seal..-, .il.ioul 42 miles Lo an iiicli. 

 Avca ofl.CiUf .Vjassiz I ! Altitudes in feel above the SRa i ""'° i 



