688 



Forestry Quarterly 



.5 

 11 



PI 



u 



" 1 1 II I it iiiiiiiiiiiiii:i'i ""i "" ^i " -fi I — — 



1 



Periphery 



5 



Fig. 6. — Anxual Ring Designation. 



Pith. 



Douglas fir. Ship. 2, tree 1, disc B. Curve showing average fiber length by rings, at 



10 feet from ground. 



Fig. 7. — Ann-ual Ring Designation, 



Douglas fir. Ship. 2, tree 1. Curve showing average maximum and average minimum 



fiber length, by rings. 



