Forest Mensuration 



189 



felling, superficial shake due to fire scars, sunscald, frosts, 

 or any other defects which require the removal of a 

 wide slab. The sealer measures the width of the slab 

 which would obviously have to be cut off, finds in the table 

 the loss in board feet, and deducts this from the gross 

 scale of the log. If the defect runs through the log, follow- 

 ing the grain, and does not extend deeper at the large 

 than at the small end, the measurement is taken at the 

 top. If the defect appears only at the large end, or 

 extends relatively nearer the center than at the small end, 

 the sealer must estimate the width of the slab, at the 

 small end, which would have to be taken off." 



CULL TABLE B 

 Loss BY CUTTING SLABS FROM ONE SIDE OF 10-FooT LOGS 



BOARD FEET 



