154 
The next step is the determination of the average stump height. By 
averaging the heights of the stumps of the entire plot, this height was de- 
termined as one and one-half feet. 
; ; r 
Hel ght 177 ie 
Y 
’ 
owovk ws ab 
Curve based on age and total height of White Oak (Quercus alba), showing time 
required to grow to any specified height. Based on measurement of thirty trees. 
A curve based on diameter and age at the stump was then drawn, to 
show the average diameter growth at the stump for each decade. This curve 
smoothed out any irregularities in growth at the stump for the entire number 
