White Fir 

 A grandis 



Average merchan- 

 table timber 

 (6 logs). This 

 roughly illus- 

 trates the % 

 defect in 2nd 

 growth white 

 fir on average 

 W.pine sites 

 with regard to 

 conk location. 

 On white pine 

 sites m mature 



timoer , one 

 conk ("E." ~trnc - 



toriumT will 

 cull one log in 

 a white fir 

 tree . 



II 



25% 25% 50% 50% 50% 75% 75% 75% 75% 75% 100% - % defect 



( lumber) 



General notes on white fir: 



1. 2nd and 5rd logs are most apt to be infected. 



2. 507o of the volume is in the first long log (roughly), 



3. Size of conk indicates to some extent the age of infection. 



4. Broken tops, cat faces and frost cracks are also cotrmon 

 indications of defect. The percent loss is indicated by 

 the severity of the defect. 



5. Appearance of bark sometimes gives indication of soundness 

 of tree. 



19 



