U. S. B. F.-Doc, 633, 



CHART EXHIBITING THE RELATION OF THE DAILY MAXIMUM, MINIMUM, AND MEAN TEMPERATURES OF THE AIR AND THE MEAN SURFACE OF THE WATER 



OF FIRST CONNECTICUT LAKE JULY 1 TO SEPTEMBER 6 1904. 



SYMBOLS. 



[Temperatures in degrees Fahrenheit.] 



Mean temperature of water surface. 

 — Maximum temperature of air. 



■ Mean temperature of air. 



- Minimum temperature of ajlr 



