Plate XLV. 



Fig-. 1. Little dunes formed by seaside spurg-e 

 (Euphorbia polysonifolia). Beach, Illinois. Aueusl 

 30, 1909. 



Jandplain 



Gcct-ion of Beach 

 upon which Lake 

 Michigan is becinning 

 an attack. 



in. -Wis. State line 

 Sept 1909. 



Potentilla 

 anserina 

 Association 



Beach 



Junous 

 balticus 

 11 ttoralis 

 Association 



Juncus baltious 11 ttoralis 



pliiin 



Goatterlrifi 

 plants of 

 Euphorbia 



polj',;oni folia 

 Xanthiuia comnuno 

 ;'otentillu, etc. 



1 fit" bMiir.h 



rijfr 



Lako 

 'i cJii^an 



Fig-. 2. Diagrams illustrating the character of the shore south 

 of Kenosha, Wisconsin. September, 1909. 



