VOLUME AND YIELD. 



35 



with an average of 80 cubic feet. This table is of value in estimating 

 future yields and in estimating firewood in the thickly settled regions 

 of the North where hickory is closely utilized. It may be used for esti- 

 mating, though with caution, since it represents so many different 

 regions and conditions that it is not strictly applicable to specific 



'to 



cases. 



TABLE 7. Total cubic contents of hickories and proportion of used volume. 



Table 8 gives cubic contents according to diameter and merchant- 

 able length. It is based upon the measurements of 630 trees. By 

 its use the total contents of a tree may be estimated without reference 

 to the individual logs. 



TABLE 8. Cubic contents of hickory according to diameter and merchantable length. 



