no;).] 



PUBLIC DOCUMENT — No. 31. 



179 



representing them graphically. In Fig. 3 are shown three 

 curves, each representing the variation in one of the lots meas- 

 ured for annual growth. These curves bring out more forcibly 

 than the arithmetical averages the remarkable diiferences in 



Fig. 3. 



growth between the different lots, more especially between the 

 trees on Marianna and those on the other two stocks. 



Just in passing it may be observed that the two lots on Amer- 

 icana and on Wayland have behaved much alike in all respects 

 from the beginning, while the lot on Marianna roots has shown 

 the most marked changes. 



