SAMPLE PLOT STUDIES 549 



The greatest actual volume present in 1919 is found on the check 

 plot. It must be remembered, however, that almost half the trees in 

 plots II and III were removed in thinnings, and that the actual volume 

 growth shown in the tables has taken place on the trees that were left. 

 In other words, the volume in 1914 on plot I was almost twice that on 

 either plot II or III. In spite of the much smaller base on which to 

 start, the actual increment in each of the two thinned plots is slightly 

 greater than on the check plot. The per cents of volume increment are 

 of much greater value in this connection than a mere statement of the 

 actual volume increase in cubic feet or cords. 



The mortality rates shown in Table 2 about 4.9 per cent for plot I, 

 3.5 per cent for plot II, and none for plot III are also of interest. 



Where only three plots are used, and only one 5-year period has 

 passed, it would hardly be wise to make statements that are too broad. 

 The data given in this paper are merely of a preliminary nature, and 

 not until several more of these 5-year periods are past will the draw- 

 ing of certain and definite conclusions be warranted. 



