Michigan (JeoloRical and 

 P.iological Survey. 



I'iil)lirMtii)ii 4 : Iti.ilii^y 



(Al (>Pi:X MAR8II AT TIIK EAST END ( »E rtlSII LAKE. 







(i!) olK.X MAKSII AUOIT TlKlEi: I'.AY <>N SAM> TdlNT. 



