34. 



the holes thus made on three exposures at the different 

 heights were plugged with tightly fitting corks in 

 order to prevent the accumulation of dust, or animal, 

 or vegetahle matter which might induce decay. On the 



Fig.l2 

 Main trunk of Q., 3tellata showing position 

 of instruments at 1.2 and 3 meters above 

 ground. 



oak readings were obtained at heights 1,2 meters, 3 meters , 



9.1. meters, and 13.7 meters. At each altitude observations 



were made on the south, northeast, and northwest sides. 



With the exception of evaporation readings, which were 



taken only every twenty four hours, the readings of 



all the other factors were made at nine and eleven 

 o'clock in the morning and two and four in the afterncon. 



