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PROBLEMS OF LAKE BIOLOGY 



Fig. 5. Eice Lake near Boulder Junction, Vilas County, Wis. A drainage lake in an old age stage of 

 development. The lake basin is nearly filled with organic soils, and the vegetation is very abundant. 



See also Fig. 6. 



Fig. 6. Rice Lake near Boulder Junction, Vilas County, Wis. The lake is almost filled with sediments 

 and aquatic vegetation, and only a channel remains through the wild rice and bordering swamp land. 



