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months having an amount of oscillation not diflfering much 

 from that of less elevated stations in nearly the same geogra- 

 phical position. 



Excessive rain fall at stations of moderate elevation appears 

 to be accompanied by a larger amount of oscillation than when 

 the rain fall is below the average. At more elevated stations 

 it appears as if this law was reversed, and, if found to be so, 

 will be a very important fact. 



Temperature below the average for the season greatly 

 increases the amount of oscillation. 



