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Fig. 3. — Dead Lake. Contours of the bottom of the post-glacial lake in red. The heavy line indicates 

 the position of the shore before drained. The line o indicates the water level when the map was made. Scale 

 1:4800. Contour interval five feet. 



* 



Distribution of plants when the map was drawn in black. A area which had been cleared of tamarack before 

 it was suitable for maple-poplar or the clearing society; B tamarack; C bog shrub; D bog sedge; E cultivated 

 field; F water lilies; G island; // open water; / drain; J oak woods. 



