Life of Inland Waters 



A DIAGRAM OF LIGHT DISAPPEARANCE 

 IN LAKE GEORGE, N. Y. 



From a Report by the senior author. By 

 Courtesy of the New York Conservation Commission 



Ft 



A A. Well-lighted surface water 

 B. The breaker line 



>c C. The level of the pond 

 weeds 



D. The level of the Nitella 

 beds 



E. The region of disappear 

 ance of all growths of 

 green plants 



F. The region of total dark- 

 ness. 



