TABLES RELATING TO PARTS III AND IV 281 



VOLUME TABLE No. 20. WESTERN WHITE PINE, IN 

 BOARD FEET. BY THE SCRIBNER RULE 



(From Bulletin No. 36, U. S. Forest Service) 



From timber grown in northern Idaho. 



Trees scaled to a top diameter inside bark of 6 to 8 

 inches. Height of stump 2 to 3 feet. All trees scaled 

 as though sound. Loss by breakage was 4 per cent. 

 Loss due to invisible rot was 5 per cent. 



