Courtesy Forest Service, U. S. Dept Agr. 



FIG. 134. THE CUP AND GUTTER 

 SYSTEM OF BOXING PINE TREES 

 FOR TURPENTINE 



After Forest Service, U. S. Dept. Agr. 



FIG. 135. A CROSS-SECTION OF AN 

 LOG, SHOWING ANNUAL RINGS 



Photo by Duncan 



FIG. 136. A YOUNG LONG- LEAF PINE 

 The sets of branches indicate the aere at the top 

 206 



