GLACIAL MAP OF THE GREAT LAKES REGION. 



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XJVi.ll'Ve.sa Arxas 



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Diamoiid Localities ° CE^e^*^ O.Oi-eftoii. 



K Kol\lsvi.\U O.Dowigiac M. Milford. P.Tli^^it Ci-V.. B JB^.- i-linftt on.. 



AVe are iiKlel>te.l to tlie University of Cliicatro Press for the above illustrMtion. 



