282 A MANUAL FOR NORTHERN WOODSMEN 



VOLUME TABLE No. 21. WESTERN YELLOW PINE IN 

 BOARD FEET, BY THE SCRIBNER RULE 



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



Measurements by T. S. Woolsey, Jr., in Arizona. 



Trees scaled to 8-inch top inside bark straight and 

 sound. Allow 3 to 15 per cent for defects. The so-called 

 *' black jack " variety requires a further reduction of 

 about 12 per cent, having a smaller volume than the older 

 " yellow pine.'* 



