PLANTATIONS IN CALIFORNIA. 



Table I shows the average volume in cubic feet of different sized blue 

 gum trees. 



TABLE I. Volume Table for Blue Gum (Eucalyptus globulus). Seedlings and Sprouts. 



To construct the above table several thousand felled trees were 

 measured in 1903 and the diameter taken at intervals of 10 feet 

 along the stem of the tree. Of the trees measured 1,073 of the largest 

 were selected, the volume of each one was computed and the resulting 

 data plotted on cross-section paper. Curves were then drawn and 

 the averages read from the curves. The volume of the stump, which 

 was 6 to 12 inches high, and of the top above a point where the diam- 

 eter inside the bark was less than 2 inches, were not included. The 

 data were worked over recently for the purposes of this circular, and 

 errors appearing in former tables based on them have been corrected.* 



To convert the volume of a tree in cubic feet to its equivalent in 

 standard cords it was assumed that on the average 90 cubic feet of 

 solid wood will equal one standard cord of 128 cubic feet. The Cali- 

 fornia cord contains three fourths of the volume of a standard cord. 



*The lefthand vertical column in the above table shows the diameter of the tree at 

 breast height ; the upper horizontal line shows the total height of the tree from the 

 ground to the top of the crown. To find the volume of a tree of any diameter and 

 height, for example, 10 inches in diameter and 100 feet high, look in the lefthand 

 column for the diameter (10) and under the height (100) find the volume (20.2 cubic 

 feet). 



