Michigan (Jeoloyical anil 

 Kiolngical Survey. 



I'liblicatiiin 4 : I'.IoIokv 2. 

 I'late VI. 



(Ai rUAIKIE AT TIIK BASK OF SAXI) I'OIXT. I'll KAC.M ITi:S ASSOCIATION WITH 

 ••WOODY ISLANDS." TIIIC LATTKK TKItKACi:D. 



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(B) MAK(;iX OF TDK ritAIKIK AT TIIK BASK OF SAND I'olNT. I'll KAci.MlTKS 

 ASSOCIATION IN Till: Foi;i:( ;U( UND. AI.NIS ASSOCIATION IN BACK- 

 GROUND. 



