MEASUREMENTS REQUIRED FOR TREE ANALYSES 



377 



TABLE LVIII 



Growth of Chestnut Oak 



In Cubic Volume, from Diameter and Height Growth and Use of a Standard 



Volume Table 



* Cubic volumes taken from Frothingham's table for chestnut oak in Bui. 96 Forest Service, 

 "Second Growth Hardwoods in Connecticut." Height from Table LVII, §284. Diameter from 

 growth of the same ten trees used in this table. 



12 3 4 5 6 

 Diameter, inches 



Fig. 80. — Stem analysis of a 

 tree 36 years old, by dec- 

 ades, counting in from 

 outer ring, based on stump. 

 Stump is shown below 

 point marked 0. 



289. Measurements Required for Tree 

 Analyses. The data required in a tree 

 analysis, in addition to those taken for 

 volume and itemized in § 134 and § 135, 

 are, 



1. Age of each section (height above 

 stump and length given). 



2. Growth on average radius from center 

 to outer ring, by decades. 



3. Where needed, width of sap and 

 number of rings in sapwood. 



290. Computation of Volume Growth for 

 Single Trees. The method of computing 

 the growth in volume for a given tree is 

 best shown by graphic illustration. Fig. 

 80 shows the dimensions of a chestnut oak 

 36 years old at the stump, and the size 

 which this tree had when 26, 16 and 6 

 years old. 



To correlate the growth of upper section 

 for the same decades, these decades are 

 counted from the circumference inward, as 

 shown, with the odd rings at the center. 

 Diameter growth for each decade is then 



