300 400 500 

 AGE (years) 



800 



Fig. 23. — Relationship of tree age to cubic-foot cull in the 

 entire stem; percent gross cubic -foot volioine that is cull, 

 from the grouna to a ^4— inch top, Sitka spruce, western 

 hemlock, and western redcedar in Southeast Alaska. 



-28- 



