TABLES 



237 



TABLE XXXVI. RED, BLACK AND SCARLET OAKS. 1 

 VOLUME IN TIES. 



Based on measurements of 159 trees. 



All first-class ties 6' X 8'X 8'. 



Note. The volume in "topwood" (top and branches) was obtained by subtracting the aggre- 

 gate cubic volume of tie logs to a minimum top diameter of 9 inches, outside bark, from the total 

 used volume of the tree, in cubic feet (to a minimum diameter of 2 inches, outside bark). 



1 Taken from U. S. Forest Service Bull. 96. 



