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THE AMERICAN NATURALIST [Vol. LII 



be taken as describing typical conditions in the large area 

 of the Adirondacks. 



Inasmuch as the past as expressed in the present 

 physiography has played such a large part in influencing 

 the present life of the lake, a brief description of the pres- 

 ent conditions is necessary as well as the special stations 

 at which collections were made. The names of these sta- 



tions are found in Fig. 1. To these should be added the 

 names of the two small bays, one centering at station 5, 

 which we will name Big St. Germain Bay, and the one 

 south of this, which we call Little St. Germain Bay. 



The plant life, the ultimate source of fish food, is lim- 

 ited to the area between the shore and the 15-foot con- 

 tour line except for the floating algal forms. This is the 

 part of the lake, then, that is important for our study. 



