WEATHER IN CRANBERRY CULTURE 



15 



10 



10 



■ n 



January 15 



January 24 



February 4 



10 



February 12 



February 13 



February 20 



10 



February 27 



ill 



March 5 



March 13 



10 



5 o 



Figure 4. The Dissolved Oxygen Content of the 

 Water Outside and Inside the Cylinders and the 

 Thickness of the Ice on the State Bog on Various 

 Dates from January 15 to March 20, 1941. 



The bars with solid shading represent the oxygen 

 content of the water outside the cylinders, the 

 unshaded bars the oxygen content inside and the 

 diagonally hatched bars the thickness of the ice 

 at the three stations. In each group of three, 

 number 1 is always at the left. 



March 20 



