378 



GROWTH OF TREES IN VOLUME 



measured from center outward, 

 are given in the following table: 



The full data for this tree analysis 



TABLE LIX 

 Stem Analysis op a- Tree 



Species, Chestnut Oak. 

 Date, 1912. 

 Total Height, 40 feet. 

 Width Crown, 14 feet. 

 Tree Class, Suppressed. 



Locality, Milford, Pike Co., Pa. 

 D.B.H., 4 inches. Height Stump, 1 foot. 

 Merch. Length, 20 feet. 

 Length Crown, 17 feet. 



Distance in inches on average radius from center to ring, by decades. The 

 first column shows the number of years in the first fractional decade. 



In addition, for a group of trees analyzed, the site, density of stand, 

 character of trees shown, conditions of cutting or other factors whose 

 influence on growth is to be determined, are recorded. With diameter 

 at each decade for each section recorded, the total volume of the tree 

 and its volume at each decade in the past, e.g., for 36, 26, 16 and 6 

 years, is obtained by methods indicated in Chapter III, using the 

 Smalian or the Huber formula for cubic contents. 



But one detail is lacking — the actual height which the tree had 

 at the above decades, in case the former tip falls between two of the 

 sections counted. This tip contains a very small per cent of total 

 volume, and for merchantable contents would be ignored. But for 

 accurate studies of total cubic contents the height is obtained by assum- 

 ing that the height growth maintained the same rate per year as shown 



