Douglas Fir Fiber 



687 



k 



U 



1 



Periphery. 



Pith. 



Fig. 4. — Annual Ring Designation. 



Douglas fir. Ship. 2, tree 1, disc L'. Curve show- 

 ing average fiber length by rings, at 154 feet from 

 ground. 



Periphery. 

 Douglas fir. 



Fig. 5. — Annual Ring Designation. 



Ship 2, tree 1, disc T. Curve showing average fiber length 

 by rings, at 82 feet from ground. 



Pith. 



