♦. 



Fig i —First Sister Lake. Contours of the post-glacial lake in red. The heavy 

 line indicates the position of its shore as shown by peat deposit. Scale i : 2880. Contour 

 interval of topography five feet, of hydrography ten feet. 



Present distribution of plant societies in black. A open water; B bog sedge; 

 C bog shrub; D clearing; E tamarack; F maple-poplar; G w.llow; H oak-h.ckory. 



