An associational study of Illinois sand prairie . Figure 23. The shore of Matanzas Lake. Just inwardfrom the beach at this point, and northwardalong the foot of the bluff, is a bog asso-ciation, in which a number of northern bogplants are Figure 24. The Quiver Lake beach. The lake and the riverat this point are confluent. The marginal dune,with a mixed forest growth, rises in a steep slopefrom the beach.

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Keywords: ., bookcentury1900, bookdecade1910, bookidassocia, booksubjecttheses