48 THE SOITTHERN APPALACHIAN FORESTS. 



Summary of measurements of six trees of red oak, under good conditions of growth, on Yellow Creek, 



Graham County, N. C. 



Age years. . 183 



Diameter of stump, inside bark inches. . 28 



Average increase in diameter of stump for each decade do 1.5 



Increase in diameter for last ten years do 9 



Height feet. . 114 



Length of merchantable timber do 39 



Merchantable timber feet B. M. . 971 



Seven trees were measured in Wataug-a County, N. C, at about the same 

 elevation and slope as in Graham County, but on a thinner, sandier soil. This 

 group shows a somewhat slower rate of growth than that in Graham County. 



Summary of measurements of seven trees of red oak, under fair conditions of growth, Watauga County, N. C. 



Age years. . 217 



Diameter of stump, inside bark inches. . 29 



Average increase in diameter of stump for each decade .do 1.3 



Increase in diameter for last ten years do 8 



Height feet.. 102 



Length of merchantable timber. ." do 35 



Merchantable timber feet B. M. . 955 



Chestnut oak. Chestnut oak is usually found on dry, sunny, or rocky, often 

 sandy, slopes, and in such situations grows very slowly. 



The following measurements were made of typical trees growing under 

 average conditions, and show what rate of growth may be expected of the 

 chestnut oak -on well-drained southern slopes and along the crests of ridges: 



Summary of measurements of seven trees of chestnut oak, growing under average conditions, on south slope 



of the Blue Ridge, Burke County, N. C. 



[Altitude, 1,900 feet.] 



Age years. . 197 



Diameter of stump, inside bark inches. . 23 



Average increase in diameter of stump for each decade do... 1.2 



Increase in diameter for last ten years do. . . 0. 4 



Height feet. . 81 



Length of merchantable timber do. . . 31 



Merchantable timber feet B. M. . 560 



The species grows much more rapidly, however, on better and moister soil, 

 as is shown by the following measurements of ten trees growing on a north slope 

 at the head of a hollow under exceptionally good conditions for this species: 



