' 



I! ( AICOI.1NA IM.NK. 



Bark. 



Lark of small trees forms about 30 per i-.-ni of their volume; 



:rees about !."> per cent. In large trees the bark near the 



base of ti to ' inches thick and forms a great protection 



again- !,el t'rniii the ground it becomes thinner, 



:nir ' _ inch in thickness nt the base of the crown. The 



i falls from the stem forms a mound of debris at .the base 



of the trunk, at times 2 feet high and 5 or 6 feet wide. Unless this is 



nmps are apt t<> hr cut high. The bark is much thicker 



-ing thrifty trees than on slower growing older trees of the same 



rliameter and height. Table 10 gives the thickness of bark at breast 



hrinht for trees of different diameters and heights, and is an average 



i.f l.Mth young and old.. Below breasthigh the bark is much thicker as 



shown in Table 11. 



TABLE 10. THICKNESS OF BARK AT BREASTHEIGHT AND DIAMETER OF STEM INSIDE OF BARK AT 



BREASTHEIOHT ON TREES OF LOBLOLLY PINE OF DIFFERENT DIAMETERS AND HEIGHTS. 



TREES WITH DIAMETERS BELOW 23 INCHES ARE LESS THAN 75 YEARS OLD. 



Table 11 shows the comparative average thickness of the bark on the 

 stump of trees of the loblolly, longleaf, and white pines of different 

 sizes : 



